VIETNAM NATIONAL UNIVERSITY HOCHIMINH CITY INTERNATIONAL UNIVERSITY SCHOOL OF ELECTRICAL ENGINEERING
|
|
- Leslie West
- 8 years ago
- Views:
Transcription
1 VIETNAM NATIONAL UNIVERSITY HOCHIMINH CITY INTERNATIONAL UNIVERSITY SCHOOL OF ELECTRICAL ENGINEERING BUILD A METHOD TO MEASURE THE RELATIVE PERMITTIVITY OF THE SUBSTRATE OF A PCB USING VECTOR NETWORK ANALYZER By Le Duy Trinh A thesis submitted to the School of Electrical Engineering in partial fulfillment of the requirements for the degree of Bachelor of Electrical Engineering HoChiMinh City, Vietnam June 2012
2 BUILD A METHOD TO MEASURE THE RELATIVE PERMITTIVITY OF THE SUBSTRATE OF A PCB USING VECTOR NETWORK ANALYZER APPROVED BY: THESIS COMMITTEE
3 ACKNOWLEDGMENTS Foremost, I would like to express my sincere gratitude to my advisor, M.E. Tran Van Su, for his continuous support to my work. His guidance helped me in all the time of doing this thesis and writing this report. This thesis cannot be done smoothly without his instruction he gave me. I also thank to Mr. Vu Huy Long for his support in the work shop. Thank to Tran Trung Kien, Nhan Nhat Quang and Vo Truong Tien for technical support in the laboratory during the time doing thesis. iii
4 TABLE OF CONTENT ACKNOWLEDGMENTS... iii LIST OF FIGURE... v LIST OF TABLE... vi ABSTRACT... vii CHAPTER 1: INTRODUCTION Background and problems: Project objectives:... 4 CHAPTER 2: LITERATURE REVIEW Theory of Relative Permittivity Review measuring permittivity of PCB s substrate methods that exist Method that using VNA and XFDTD Parallel plate method Transmission line method CHAPTER 3: METHODOLOGY Fabricate the test board Measure S11 and S21 using Vector Network Analyzer Set up the Optimization controller and Goals Build the model of transmission line: Run the simulation Setup the Optimization controller and goals Evaluate the result: CHAPTER 4: RESULT CHAPTER 5: CONCLUSION AND RECOMMENDATION Conclusion: Recommendation: REFERENCES: iv
5 LIST OF FIGURE 1. Figure 1: Flowchart of the proposed method Figure 2: Algorithm to estimate the dielectric constant of a PCB substrate Figure 3: Parallel plate method probe Figure 4: Transmission line method coaxial probe Figure 5: Example of transmision line method waveguide probe Figure 6: Measurement using transmission method and coaxial probe Figure 7: 100mm long transmission line Figure 8: Data File Tool windows in ADS Figure 9: Schematic of a 100mm long transmission line, include SMA model Figure 10: Plot 2 different traces from 2 different datasets Figure 11: Measured S and Simulated S plot on a same rectangular Figure 12: The major point of measured S11 magnitude Figure 13: The goal of magnitude of S Figure 14: The goal of magnitude of S Figure 15: The goal of phase S Figure 16: Optimization Variable Setup Figure 17: Final schematic Figure 18: The Optimization window Figure 19: Result of trial # Figure 19: Result of trial # v
6 LIST OF TABLE 1. Table 1: Relative permittivity of some material at room temperature...6 vi
7 ABSTRACT This report presents a method for determining the relative permittivity (dielectric constant) of a PCB s substrates. In the presented method, a 100mm long transmission line on the PCB substrate with a userpredicted dielectric constant value is designed and fabricated. Then the Vector Network Analyzer is used to measure the magnitude and phase of S11 and S21 of the transmission line. The measured data then inputted to Optimization functionality in Advance Design System (ADS) software to compare with a simulated data. The Optimization functionality plays the role as an adaptive algorithm that used the measured data as a goal. It tries to match simulated data to the goal. If it is matched, the program will stop and give us the result. Key words: Relative permittivity (dielectric constant), Vector Network Analyzer, transmission line, Optimization functionality, ADS Software. vii
8 CHAPTER 1: INTRODUCTION 1. Background and problems: In recent years, the prosperous development of mobile cell phones and mobile communications has propelled the high speed and high frequency circuit developers to design low price products to promote their market competition. It has then become an important task for them to find a high efficiency and high frequency printed circuit board (PCB). FR4 has the advantages of low cost and favorable fabrication characteristics that make it as the current commonly selected dielectric material for the PCB. The dielectric characteristics of the dielectric material for the PCB may vary due to different fabrication processes and fabrication environment. The dielectric parameters such as the relative permittivity, also called dielectric constant (εr) and the attenuation constant (A) of the circuit board have great impact on the high frequency or high speed characteristics of the system performance. The dielectric constant affects the circuit characteristic impedance and the signal transmission speed while the attenuation constant is relating to the power loss when the signal is transmitting through the circuit. 1
9 The dielectric constant of microwave substrate is an important parameter to design the passive devices such as filters and antennas or microwave electronic packaging for microwave integrated circuit. However, the dielectric information of substrate is usually given at low frequencies by the manufacturer. In addition, due to manufacturing errors, the dielectric constant of microwave substrate is usually in a range. Therefore, we need to know the accurate dielectric constant of substrate at high frequencies to get the best frequency response of the circuit. In the utilization of the current network vector analyzer it can only measure the circuit Sparameter, it does not provide any measurement or operation that with only one simple touch to immediately measure the PCB s dielectric constant and attenuation loss. For every application frequency it has different measurement methods to measure the dielectric constant and coupling loss of the dielectric material. Figure 1 portrays the procedure of the proposed method to build a simple measurable equivalent module for a lossy transmission line by using Agilent s ADS software and Vector Network Analyzer (VNA). 2
10 Fabricate a 100mm long transmission line Using VNA measure S11 and S21 By utilizing optimized ADS s functionality, (include SMA model) Find out the dielectric constant by reading from schematic Figure 1: Flowchart of the proposed method. It is needed at the test point to include the equivalent circuit of an SMA connector into the equivalent transmission line module to make a complete equivalent circuit. We then used the optimization functionalities of the ADS to have the transmission line characteristic impedance, effective dielectric constant, attenuation coefficient, dielectric attention coefficient due to skin effect and by using proper formulas to calculate the impedance loss, dielectric loss, and dielectric coefficient. 3
11 2. Project objectives: The goals of this project are: To build a method to measure permittivity of PCB s substrate. To study how to apply Optimization functionalities of the ADS to measure permittivity of PCB s substrate. To estimate the error of the result. 4
12 CHAPTER 2: LITERATURE REVIEW 1. Theory of Relative Permittivity Relative permittivity, usually denote as εr. Definition: The relative permittivity of a material under given conditions reflects the extent to which it concentrates electrostatic lines of flux [1]. Relative permittivity is defined as: r ( ) ( ) where ε(ω) is the complex 0 frequency which dependents on absolute permittivity of the material, and ε0 is the vacuum permittivity. Relative permittivity εr is equivalent to dielectric constant (which usually denoted by K). Effective dielectric constant εe of a microstip line defined by formula [2]: e r 1 r H W Where H is the thickness of substrate, W is the width of transmission line. 5
13 Measurement [1]: The relative static permittivity, ε r, can be measured for static electric fields as follows: First the capacitance of a test capacitor, C0, is measured with vacuum between its plates. Then, using the same capacitor and distance between its plates the capacitance, Cx, with a dielectric between the plates is measured. The relative dielectric constant can be calculated as: r Cx C0 Table 1 showed the relative permittivity of some material at room temperature. Material Freq. Εr Alumina 99.5% 10Ghz Ceramic A35 3Ghz 5.6 Glass (Pyrex) 3Ghz 4.82 Silicon 10Ghz 11.9 Teflon 10Ghz 2.08 Table 1: The Relative permittivity of some materials at room temperature. 6
14 2. Review measuring permittivity of PCB s substrate methods that exist. Several methods varying in accuracy and computational effort are available in the literature to determine the dielectric constant of microwave substrates. Some of them can be listed below: Coaxial probe Free space Transmission line [3] Resonant cavity [3], [4] Parallel plate One of these is the transmission line method in which the scattering parameters of a single transmission line on the substrate are measured and the dielectric constant is then determined. Another method is to use a cavity resonator formed by metallization of all faces of a substrate, and the microwave signal is injected via a small hole. Then, dielectric constant information can be extracted from the resonance frequency expression [3]. Alternatively, by using a ring resonator, the dielectric constant of substrate can be calculated from the resonance frequency [5]. The dielectric constant can also be determined by measuring the capacitance with a parallel plate capacitor. To do so, a piece of PCB substrate without metallization is inserted into a waveguide, and 7
15 the dielectric constant is calculated from scattering parameters using reflection of microwaves [5]. These methods with their relative merits and limitations can be used in microwave frequencies. The listed above methods can be understood deeply by seeing the references at the end of this report. In the some next pages of Literature review chapter, some typical method will be briefly presented Method that using VNA and XFDTD Description: In this method, a bandpass microstrip filter on the PCB substrate with a userpredicted dielectric constant value is designed for a given center frequency, and it is implemented. The simulation results of the designed bandpass filter are obtained by the help of electromagnetic analysis software; XFDTD. Experimental results regarding the filter frequency characteristic are accomplished by means of a vector network analyzer. The simulation results of the designed filter are modified to overlap with the experimental ones by varying the dielectric constant value. When the simulation and experimental 8
16 results are overlapped, the value of dielectric constant is accurately selected [6]. The block diagram that summarizes the method is shows in figure 2. A bandpass microstrip filter constructed on the PCB substrate with a userpredicted permittivity is designed and is implemented. The simulation results of the designed bandpass filter are obtained using XFDTD, (a Computer Aid Design by REMCOM Inc.). S21 of designed filter are measured using VNA and is acquired by a computer. Both the simulation and experimental frequency characteristic results of the filter are transferred to the same diagram. The simulation results of designed filter and the experimental ones are mapped by varying the dielectric constant value. The accurate value of dielectric constant is then selected by overlapping the simulation and experimental results. Advantages and disadvantages: The advantage of this method is that any microwave designer can use it practically without any background in sophisticated mathematical techniques. The proposed method is easy to understand the algorithm, the test circuit is easy to fabricate; most of calculations are done by computer. However, the accuracy of the proposed method is also affected by the numerical noise of the microwave design software used. 9
17 Design and implementation of the microstrip S21 parameter measurement of the filter by vector network analyzer (VNA) Transfer of S21 measurement data to PC environment Comparison of simulated and measured filter characteristics Adjustment of the unknown dielectric constant to its accurate value in the simulation to map simulated and measured characteristics Figure 2: Algorithm to estimate the dielectric constant of a PCB substrate. 10
18 2.2. Parallel plate method Description [7]: In the parallel plate method, the material under test (MUT) is sandwiched between two parallel metallic plates as shown in figure below: Figure 3: Parallel plate method probe. This structure creates a capacitor which capacity is measured by RLC meter. The capacity of the capacitor is expressed by the formula: C 0 r S d Where ε0 is dielectric constant of the vacuum, 11
19 εr is relative dielectric constant, S is surface of the plates, d is distance between plates. Therefore, r Cd 0S Advantages and disadvantages: This method is easy to process, take short time. However, this method has a disadvantage is small frequency range of the permittivity measurement simply limited to 1 GHz Transmission line method Description [7]: In the transmission line method, material under test (MUT) is inserted in to the coaxial, air cell as shown in figure 4 or in to the waveguide cell as shown in figure 5. The probe is connected to the Vector Network Analyzer (VNA) as shown in figure 6. 12
20 Assuming the four poles model of coaxial probe with MUT, the Vector Network Analyzer measures all parameters of matrix s from which we can calculate the complex permittivity of the MUT. There are various approaches for obtaining the permittivity from sparameters. In this method, the most popular method is NicholsonRossWeir (NRW) Method [8] was used. NRW said that permittivity can be computed from following equation: r r 2 1 c 2 c 2 2 Where 1 r μr is relative permeability, λ0 is free space wavelength, λc is cutoff wavelength. X X 2 1; and 1; X S112 S ; 2 S 21 13
21 Figure 4: Transmission line method coaxial probe. Figure 5: Example of transmision line method waveguide probe. 14
22 Figure 6: Measurement using transmission method and coaxial probe. Advantages and disadvantages: The main disadvantage of the transmission method using waveguide is cutoff frequency of the waveguide which determines the minimum frequency value where we can obtain the dielectric permittivity. The method is dedicated for high frequency measurements only. The other disadvantage is complicated sample preparation especially in case of textiles. In the coaxial probe, however, the material must also be prepared, but the tested textile material can be rolled into a roll around inner conductor. 15
23 CHAPTER 3: METHODOLOGY In order to achieve goals, the following steps must be done: Fabricate the test board. Measure S11 and S21 using Vector Network Analyzer. Setup the Optimization controller and goals. Evaluate the result. Some steps in this chapter will be described in detail. 1. Fabricate the test board In this thesis, FR4 printed circuit board was used, with εr=4.2~4.8. Two samples were fabricated. Sample #1: Microstripline s dimension: length=100mm, width=5mm, Z0 about 70ohm. Figure 7 shows the sample #1. Sample #2: Microstripline s dimension: length=100mm, width=7mm, Z0 about 80ohm. 16
24 Figure 7: 100mm long transmission line. 2. Measure S11 and S21 using Vector Network Analyzer. The Vector Network Analyzer equipment (ENCE5071C) of Agilent was used to measure S parameters, (includes magnitude and phase), of transmission line in the frequency range 1GHz to 4GHz. The data will be saved as data.s2p file, then copy to PC. Input the measured data to ADS: This step aims to read the data in.s2p file into a dataset. The dataset will contain the traces of S11 and S21. First we run Data File Tool in ADS, then choose mode Read data file into Dataset. Figure 8 shows the Data File Tool windows. 17
25 Figure 8: Data File Tool windows in ADS. Link the input file name to the location of file data.s2p. Names the dataset is MEASURED_DATA_5mm. Then click Read File to read the.s2p into dataset. 18
26 Until here the magnitude and phase of S parameter is contained in dataset file MEASURED_DATA_5mm.ds. 3. Setup the Optimization controller and Goals. In this step, a model of transmission line will be created in ADS, then simulated and compared to measured data of transmission line on test board. (Compare S parameter). The simulated is then optimizing until the S11 and S21 match to measured data Build the model of transmission line: Open a new schematic window, name s_optim_5mm. A Terminal Physical Transmission Line (TLINP) will be used. Pick TLINP up from TLinesIdeal group. L L1 L=L1 nh R= Term Term1 Num=1 Z=50 Ohm C C1 C=C1 pf C C2 C=C2 pf TLINP TL1 Z=40.0 Ohm L=100 mm K=2.1 A= F=2.5 GHz TanD=0.002 Mur=1 TanM=0 Sigma=0 L L2 L=L2 nh R= Term Term2 Num=2 Z=50 Ohm Figure 9: Schematic of a 100mm long transmission line, include SMA model. 19
27 L1, C1 and L2, C2 represent two SMA connectors. Four lumped components are define by Var: Var Eqn VAR VAR1 L1= opt{ 0 to 2 } L2= opt{ 0 to 2 } C1= opt{ 0 to 2 } C2= opt{ 0 to 2 } Place a simulation controller. Set frequency range from 1GHz to 4GHz Run the simulation. In this step, we place both simulate S11 and measured S11 in a same rectangular plot. In the Data Display Windows appear, place a Rectangular Plot. Displays simulated S11 from dataset s_optim_5mm and then pick measured S11 from dataset MEASURED_DATA_5mm. See figure and figure below. 20
28 Figure 10: Plot 2 different traces from 2 different datasets. End of this step, there are 4 Rectangular Plots, shown in figure 11, include: o S11 magnitude and phase. o S22 magnitude and phase. 21
29 phase(s(2,1)) phase(s(1,1)) phase(measured_dataset_5mm..s(2,1)) phase(measured_dataset_5mm..s(1,1)) mag(s(1,1)) mag(measured_dataset_5mm..s(1,1)) mag(s(2,1)) mag(measured_dataset_5mm..s(2,1)) freq, GHz freq, GHz freq, GHz freq, GHz Figure 11: Measured S and Simulated S plot on a same rectangular. 22
30 3.3. Setup the Optimization controller and goals. This step aim to tune (automatically) the simulated S11 and S21 match the measured. In schematic s_optim_5mm, place an Optimization Controller and two Goals, pick from the Optim/Stat/DOE group. OPTIM Optim Optim1 UseAllOptVars=yes UseAllGoals=yes GOAL Goal OptimGoal1 Expr="mag(S(1,1))" SimInstanceName="SP1" Weight=1 GOAL Goal OptimGoal2 Expr="mag(S(2,1))" SimInstanceName="SP1" Weight=1 23
31 Setup Optimization Controller: Final Analysis = SP1. Optimization type = Gradient. Number of iteration = 500. Setup Goals: This step aim to match simulated data and measured data. In the figure below, the red trace is measured S11 magnitude, while the blue trace is the simulated S11, so we try to force the blue trace to pass these major points of mag(s(1,1)) mag(measured_dataset_5mm..s(1,1)) the red trace freq, GHz Figure 12: The major point of measured S11 magnitude. 24
32 In order to do this step, the goal can be set as figure below. Figure 13: The goal of magnitude of S11. 25
33 Figure 14: The goal of magnitude of S21. 26
34 Figure 15: The goal of phase S21. 27
35 After setup the Controller and Goals, we must enable the components that under optimizing process, by running Simulation Variable Setup in Simulate menu. Figure below shows components which under optimizing: L1, C1, L2, C2, characteristic impedance (Z), effective dielectric constant (relative permittivity) (K), loss tangent (TanD) and Attenuation (A). Figure 16: Optimization Variable Setup. By doing that step, the Optimization is ready to run. Figure 17 shows the schematic at the final. 28
36 GOAL OPTIM Var Eqn VAR VAR1 L1=1 opt{ 0 to 2 } L2=1 opt{ 0 to 2 } C1=1 opt{ 0 to 2 } C2=1 opt{ 0 to 2 } L L1 L=L1 nh R= Term Term1 Num=1 Z=50 Ohm SPARAMETERS S_Param SP1 Start=1 GHz Stop=4 GHz Step=1 MHz Optim Optim1 UseAllOptVars=y es UseAllGoals=y es Goal OptimGoal1 Expr="mag(S(1,1))" SimInstanceName="SP1" Weight=1 GOAL C C C1 TLINP C2 C=C1 pf TL1 C=C2 pf Z=40 Ohm opt{ 0 Ohm to 100 Ohm } L=100 mm K=3 opt{ 2 to 5 } A=1 opt{ 0 to 2 } F=2.5 GHz TanD=0.01 opt{ 0 to 0.1 } Mur=1 TanM=0 Sigma=0 Goal OptimGoal2 Expr="mag(S(2,1))" SimInstanceName="SP1" Weight=1 L L2 L=L2 nh R= GOAL Term Term2 Num=2 Z=50 Ohm Goal OptimGoal3 Expr="phase(S(2,1))" SimInstanceName="SP1" Weight=1 Figure 17: Final schematic. Run the optimization by click the symbol of Optimization Cockpit. The Optimization window will show the changing of component s value and the corresponding traces of S11 and S21. 29
37 Figure below shows the Optimization window. Figure 18: The Optimization window. The Optimization run until the all the goals is match or the number of iteration is reached. 30
38 4. Evaluate the result: In this thesis, the Optimization methods were used is Gradient [9]. The error function (EF) of Gradient: EF Wi simulationi goali, where W is the weight, in our case is set 2 allgoals one. Hence, the smaller EF is, the less differences of two measured and simulated are. In the other word, we aim to reach the minimum EF. 31
39 CHAPTER 4: RESULT The samples are under tested by the same procedure. Result of trial #1: Figure 19 shows the magnitude and phase comparison between measured and simulated. Figure 19: Magnitude and phase comparison between measured and simulated in trial #1. 32
40 The error function is Effectivity dielectric constant (relative permittivity) Keff = Using the formula e r 1 r H 1 12 W, where in our case H=1.6mm and W=5mm, so by calculation: r 22 e = r Attenuation A = 1.8. Loss tangent TanD = Characteristic impedance Z = Ohm. 33
41 Result of trial #2: Figure 20 shows the magnitude and phase comparison between measured and simulated. Figure 20: Magnitude and phase comparison between measured and simulated in trial #2. The error function is Relative permittivity ε r= Attenuation A = Loss tangent TanD = Characteristic impedance Z = Ohm. 34
42 CHAPTER 5: CONCLUSION AND RECOMMENDATION 1. Conclusion: A new method of measument relative permittivity of PCB s substrate was proposed. This method use a sample of transmission line of under test PCB, Vector Network Analyzer, and Optimization functionality in ADS. At the final, all the goals have been achieved. The relative permittivity found in two trial are and These are comparable with the datashet of the PCB s manufactor. 2. Recommendation: Followings are some recommendation for this thesis: The figure of measured and simulated comparison shown that there is an unmatch between phase of S11 of measured one and simulated one. This different must be considered. This method can be applied on a different PCB type (e.g. duroid). 35
43 REFERENCES 1. visited on May D. M. Pozar, Microwave Engineering, 2nd edition, Wiley and Sons, S.H. Chang, H. Kuan, H.W. Wu, R.Y. Yang, M. Weng, Determination of microwave dielectric constant by two microstrip line method combined with EM simulation, Microwave and Optical Technology Letters, Vol: 48, pp , A. Namba, O. Wada, Y. Toyota, Y. Fukumoto, Z. L. Wang, R.Koga, T. Miyashita, A. Watanabe, A Simple Method for Measuring the Relative Permittivity of Printed Circuit Board Materials, IEEE Transactions on Electromagnetic Compatibility, Vol:43, No: 4, pp , A.H. Boughriet, C. Legrand, A. Chapoton, Noniterative Stable Transmission/Reflection Method for LowLoss Material Complex Permittivity Determination, IEEE Trans. Microwave Theory Tech., Vol. 45, pp , Serhan Yamacli, Ali Akdagli and Caner Ozdemir, A method to determine the dielectric constant value of microwave PCB substrates, an article, Jacek Leśnikowski, Dielectric permittivity measurement methods of textile substrate of textile transmission lines, visited May an article published on
44 8. Weir Winks, Automatic Measurement of Complex Dielectric Constant and Permeability at Microwave Frequencies, Proceedings of IEEE, Vol.62 page 3336, Advanced Design System 2009 Update 1 Documentation Tuning, Optimization, and Statistical Design. Agilent, Permittivity Measurement of PC Boards and Substrate Materials Using HP4291A and HP16453A, Hewlett Packard Application Note,
ELC 4383 RF/Microwave Circuits I Laboratory 3: Optimization Using Advanced Design System Software
1 EL 4383 RF/Microwave ircuits I Laboratory 3: Optimization Using Advanced Design System Software Note: This lab procedure has been adapted from a procedure written by Dr. Tom Weller at the University
More informationAgilent De-embedding and Embedding S-Parameter Networks Using a Vector Network Analyzer. Application Note 1364-1
Agilent De-embedding and Embedding S-Parameter Networks Using a Vector Network Analyzer Application Note 1364-1 Introduction Traditionally RF and microwave components have been designed in packages with
More informationRFID Receiver Antenna Project for 13.56 Mhz Band
RFID Receiver Antenna Project for 13.56 Mhz Band Fatih Eken TE 401 Microwave Course Term Project, Fall 2004 Supervised by Asst. Prof. İbrahim Tekin Telecommunication Program in Faculty of Engineering and
More informationEM Noise Mitigation in Circuit Boards and Cavities
EM Noise Mitigation in Circuit Boards and Cavities Faculty (UMD): Omar M. Ramahi, Neil Goldsman and John Rodgers Visiting Professors (Finland): Fad Seydou Graduate Students (UMD): Xin Wu, Lin Li, Baharak
More informationSimulation and Design Route Development for ADEPT-SiP
Simulation and Design Route Development for ADEPT-SiP Alaa Abunjaileh, Peng Wong and Ian Hunter The Institute of Microwaves and Photonics School of Electronic and Electrical Engineering The University
More informationPlanar Inter Digital Capacitors on Printed Circuit Board
1 Planar Inter Digital Capacitors on Printed Circuit Board Ajayan K.R., K.J.Vinoy Department of Electrical Communication Engineering Indian Institute of Science, Bangalore, India 561 Email {ajayanr jvinoy}
More informationS-PARAMETER MEASUREMENTS OF MEMS SWITCHES
Radant MEMS employs adaptations of the JMicroTechnology test fixture depicted in Figure 1 to measure MEMS switch s-parameters. RF probeable JMicroTechnology microstrip-to-coplanar waveguide adapter substrates
More informationDesigning the NEWCARD Connector Interface to Extend PCI Express Serial Architecture to the PC Card Modular Form Factor
Designing the NEWCARD Connector Interface to Extend PCI Express Serial Architecture to the PC Card Modular Form Factor Abstract This paper provides information about the NEWCARD connector and board design
More informationX2Y Solution for Decoupling Printed Circuit Boards
Summary As printed circuit board s (PCB) power distribution systems (PDS) gain in complexity (i.e. multiple voltages and lower voltages levels) the sensitivity to transients and noise voltage is becoming
More informationEngineering Sciences 151. Electromagnetic Communication Laboratory Assignment 3 Fall Term 1998-99
Engineering Sciences 151 Electromagnetic Communication Laboratory Assignment 3 Fall Term 1998-99 WAVE PROPAGATION II: HIGH FREQUENCY SLOTTED LINE AND REFLECTOMETER MEASUREMENTS OBJECTIVES: To build greater
More informationIntroduction. Description of Measurement Techniques
Introduction The capability to measure the dielectric properties of various materials has been developed in the Electromagnetic Properties Measurement Laboratory (EPML) of the Electromagnetics Research
More informationS-parameter Simulation and Optimization
S-parameter Simulation and Optimization Slide 5-1 S-parameters are Ratios Usually given in db as 20 log of the voltage ratios of the waves at the ports: incident, reflected, or transmitted. S-parameter
More informationWhen designing. Inductors at UHF: EM Simulation Guides Vector Network Analyzer. measurement. EM SIMULATION. There are times when it is
Inductors at UHF: EM Simulation Guides Vector Network Analyzer Measurements John B. Call Thales Communications Inc., USA When designing There are times when it is circuits for necessary to measure a operation
More informationA BROADBAND COAXIAL LINE FOR ELECTRICAL CHARACTERIZATIONS OF DIELECTRICS JAFER OMER SULIMAN AZZABI
i A BROADBAND COAXIAL LINE FOR ELECTRICAL CHARACTERIZATIONS OF DIELECTRICS JAFER OMER SULIMAN AZZABI A project report submitted in partial fulfillment of the requirement for the award of the Degree of
More informationVector Network Analyzer Techniques to Measure WR340 Waveguide Windows
LS-296 Vector Network Analyzer Techniques to Measure WR340 Waveguide Windows T. L. Smith ASD / RF Group Advanced Photon Source Argonne National Laboratory June 26, 2002 Table of Contents 1) Introduction
More informationMODELING OF PLANAR METAMATERIAL STRUCTURE AND ITS EFFECTIVE PARAMETER EXTRACTION
International Journal of Electronics and Communication Engineering & Technology (IJECET) Volume 7, Issue 1, Jan-Feb 2016, pp. 55-62, Article ID: IJECET_07_01_006 Available online at http://www.iaeme.com/ijecetissues.asp?jtype=ijecet&vtype=7&itype=1
More informationJ. Zhang, J.-Z. Gu, B. Cui, andx. W. Sun Shanghai Institute of Microsystem & Information Technology CAS Shanghai 200050, China
Progress In Electromagnetics Research, PIER 69, 93 100, 2007 COMPACT AND HARMONIC SUPPRESSION OPEN-LOOP RESONATOR BANDPASS FILTER WITH TRI-SECTION SIR J. Zhang, J.-Z. Gu, B. Cui, andx. W. Sun Shanghai
More informationCapacitor Self-Resonance
Capacitor Self-Resonance By: Dr. Mike Blewett University of Surrey United Kingdom Objective This Experiment will demonstrate some of the limitations of capacitors when used in Radio Frequency circuits.
More informationNational Laboratory of Antennas and Microwave Technology Xidian University Xi an, Shaanxi 710071, China
Progress In Electromagnetics Research, PIER 76, 237 242, 2007 A BROADBAND CPW-FED T-SHAPE SLOT ANTENNA J.-J. Jiao, G. Zhao, F.-S. Zhang, H.-W. Yuan, and Y.-C. Jiao National Laboratory of Antennas and Microwave
More informationTuning a Monopole Antenna Using a Network Analyzer
11/21/11 Tuning a Monopole Antenna Using a Network Analyzer Chris Leonard Executive Summary: When designing a monopole antenna it is important to know at which frequency the antenna will be operating at.
More informationElectronic filters design tutorial -2
In the first part of this tutorial we explored the bandpass filters designed with lumped elements, namely inductors and capacitors. In this second part we will design filters with distributed components
More information2. The Vector Network Analyzer
ECE 584 Laboratory Experiments 2. The Vector Network Analyzer Introduction: In this experiment we will learn to use a Vector Network Analyzer to measure the magnitude and phase of reflection and transmission
More informationShielding Effectiveness Test Method. Harbour s LL, SB, and SS Coaxial Cables. Designs for Improved Shielding Effectiveness
Shielding Effectiveness Test Method Harbour s LL, SB, and SS Coaxial Cables Designs for Improved Shielding Effectiveness Harbour Industries 4744 Shelburne Road Shelburne Vermont 05482 USA 802-985-3311
More informationThe waveguide adapter consists of a rectangular part smoothly transcending into an elliptical part as seen in Figure 1.
Waveguide Adapter Introduction This is a model of an adapter for microwave propagation in the transition between a rectangular and an elliptical waveguide. Such waveguide adapters are designed to keep
More informationCurriculum and Concept Module Development in RF Engineering
Introduction Curriculum and Concept Module Development in RF Engineering The increasing number of applications students see that require wireless and other tetherless network solutions has resulted in
More informationTime and Frequency Domain Analysis for Right Angle Corners on Printed Circuit Board Traces
Time and Frequency Domain Analysis for Right Angle Corners on Printed Circuit Board Traces Mark I. Montrose Montrose Compliance Services 2353 Mission Glen Dr. Santa Clara, CA 95051-1214 Abstract: For years,
More informationComprehensive Analysis of Flexible Circuit Materials Performance in Frequency and Time Domains
Comprehensive Analysis of Flexible Circuit Materials Performance in Frequency and Time Domains Glenn Oliver and Deepu Nair DuPont Jim Nadolny Samtec, Inc. glenn.e.oliver@dupont.com jim.nadolny@samtec.com
More informationCopyright 1996 IEEE. Reprinted from IEEE MTT-S International Microwave Symposium 1996
Copyright 1996 IEEE Reprinted from IEEE MTT-S International Microwave Symposium 1996 This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE
More informationAgilent Split Post Dielectric Resonators for Dielectric Measurements of Substrates. Application Note
Agilent Split Post Dielectric Resonators for Dielectric Measurements of Substrates Application Note l Introduction The split post dielectric resonator (SPDR) provides an accurate technique for measuring
More informationSoftware for Design NMR Probes Using the Shielded Split Ring and the Shielded Symmetrical Band Resonators
Software for Design NMR Probes Using the Shielded Split Ring and the Shielded Symmetrical Band Resonators Nasreddine Benahmed University of Tlemcen, Algeria ABSTRACT This article presents a software (NMR
More informationUtilizing Time Domain (TDR) Test Methods For Maximizing Microwave Board Performance
The Performance Leader in Microwave Connectors Utilizing Time Domain (TDR) Test Methods For Maximizing Microwave Board Performance.050 *.040 c S11 Re REF 0.0 Units 10.0 m units/.030.020.010 1.0 -.010 -.020
More informationA Novel Multi Frequency Rectangular Microstrip Antenna with Dual T Shaped Slots for UWB Applications
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 9, Issue 1, Ver. VI (Feb. 2014), PP 120-124 A Novel Multi Frequency Rectangular Microstrip
More information2/20/2009 3 Transmission Lines and Waveguides.doc 1/3. and Waveguides. Transmission Line A two conductor structure that can support a TEM wave.
2/20/2009 3 Transmission Lines and Waveguides.doc 1/3 Chapter 3 Transmission Lines and Waveguides First, some definitions: Transmission Line A two conductor structure that can support a TEM wave. Waveguide
More information1. The Slotted Line. ECE 584 Microwave Engineering Laboratory Experiments. Introduction:
ECE 584 Microwave Engineering Laboratory Experiments 1. The Slotted Line Introduction: In this experiment we will use a waveguide slotted line to study the basic behavior of standing waves and to measure
More informationELECTRICAL CHARACTERISATION OF SEMI-RIGID COAXIAL CABLES WITH SMA AND K CONNECTORS. Carmen Diez Rafael García Juan Daniel Gallego.
ELECTRICAL CHARACTERISATION OF SEMI-RIGID COAXIAL CABLES WITH SMA AND K CONNECTORS March 2005 TECHNICAL REPORT C.A.Y. 2005-4 ABSTRACT Semi-rigid coaxial transitions are normally used in closed cycle refrigerators
More informationHow to make a Quick Turn PCB that modern RF parts will actually fit on!
How to make a Quick Turn PCB that modern RF parts will actually fit on! By: Steve Hageman www.analoghome.com I like to use those low cost, no frills or Bare Bones [1] type of PCB for prototyping as they
More informationLONG RANGE ULTRA-HIGH FREQUENCY (UHF) RADIO FREQUENCY IDENTIFICATION (RFID) ANTENNA DESIGN. A Thesis. Submitted to the Faculty.
LONG RANGE ULTRA-HIGH FREQUENCY (UHF) RADIO FREQUENCY IDENTIFICATION (RFID) ANTENNA DESIGN A Thesis Submitted to the Faculty of Purdue University by Nathan D. Reynolds In Partial Fulfillment of the Requirements
More informationHow To Design An Ism Band Antenna For 915Mhz/2.4Ghz Ism Bands On A Pbbb (Bcm) Board
APPLICATION NOTE Features AT09567: ISM Band PCB Antenna Reference Design Atmel Wireless Compact PCB antennas for 915MHz and 2.4GHz ISM bands Easy to integrate Altium design files and gerber files Return
More informationIC-EMC v2 Application Note. A model of the Bulk Current Injection Probe
IC-EMC v2 Application Note A model of the Bulk Current Injection Probe This work has been conducted by S. Akue Boulingui and A. Cisse Ndoye within the French project EPEA-Aerospace Valley funded by the
More information100 ADS Design Examples A Design Approach Using (ADS)
100 ADS Design Examples A Design Approach Using (ADS) Chapter 2: Transmission Line Components Ali Behagi 2 100 ADS Design Examples 100 ADS Design Examples A Design Approach Using (ADS) Chapter 2: Transmission
More informationConnectivity in a Wireless World. Cables Connectors 2014. A Special Supplement to
Connectivity in a Wireless World Cables Connectors 204 A Special Supplement to Signal Launch Methods for RF/Microwave PCBs John Coonrod Rogers Corp., Chandler, AZ COAX CABLE MICROSTRIP TRANSMISSION LINE
More informationApplication Note: PCB Design By: Wei-Lung Ho
Application Note: PCB Design By: Wei-Lung Ho Introduction: A printed circuit board (PCB) electrically connects circuit components by routing conductive traces to conductive pads designed for specific components
More informationConnected U-Slots Patch Antenna for WiMAX Applications
Connected U-Slots Patch Antenna for WiMAX Applications Hattan F. AbuTarboush (1), D. Budimir (2), R. Nilavalan (1) and H. S. Al-Raweshidy (1) (1) Wireless Network and Communication Centre (WNCC), School
More informationCreating a new project: Choose File> New Project. A dialog box appears and asking about the work directory that by default
Advanced Design System (ADS) Tutorial: ADS is a simulator like spice, cadence. But it focuses on the RF and microwave design, so most of its devices on the library are microwave devices. Circuit Simulation:
More informationAgilent EEsof EDA. www.agilent.com/find/eesof
Agilent EEsof EDA This document is owned by Agilent Technologies, but is no longer kept current and may contain obsolete or inaccurate references. We regret any inconenience this may cause. For the latest
More informationCharacterization of Spatial Power Waveguide Amplifiers
Characterization of Spatial Power Waveguide Amplifiers Authored by: Matthew H. Commens Ansoft Corporation Ansoft 003 / Global Seminars: Delivering Performance Presentation # Outline What is a Spatial Waveguide
More informationWAVEGUIDE-COAXIAL LINE TRANSITIONS
WAVEGUIDE-COAXIAL LINE TRANSITIONS 1. Overview Equipment at microwave frequencies is usually based on a combination of PCB and waveguide components. Filters and antennas often use waveguide techniques,
More informationVJ 6040 Mobile Digital TV UHF Antenna Evaluation Board
VISHAY VITRAMON Multilayer Chip Capacitors Application Note GENERAL is a multilayer ceramic chip antenna designed for receiving mobile digital TV transmissions in the UHF band. The target application for
More informationStandex-Meder Electronics. Custom Engineered Solutions for Tomorrow
Standex-Meder Electronics Custom Engineered Solutions for Tomorrow RF Reed Relays Part II Product Training Copyright 2013 Standex-Meder Electronics. All rights reserved. Introduction Purpose Designing
More information3.3 Calibration standards
C ALIBRATION STANDARDS Fig. 3.2.3 Location of the reference plane in the N-type connector. Fig. 3.2.4 Location of the reference plane in the connector types PC3.5, 2.4 mm and 1.85 mm. 3.3 Calibration standards
More informationDetermination of Dielectric Constant Of Printed Circuit Boards Sam Wetterlin 1/24/10
Determination of Dielectric Constant Of Printed Circuit Boards Sam Wetterlin 1/24/10 Introduction The dielectric constant of PCB material is important in determining the trace width required to produce
More informationCopyright 2005 IEEE. Reprinted from IEEE Transactions on Microwave Theory and Techniques, Vol. 53, No. 10, October 2005
Copyright 2005 IEEE Reprinted from IEEE Transactions on Microwave Theory and Techniques, Vol. 53, No. 10, October 2005 This material is posted here with permission of the IEEE. Such permission of the IEEE
More informationCircuit Simulation: Here are some of ADS analysis:
Advanced Design System (ADS) Tutorial: ADS is a simulator like spice, cadence. But it focuses on the RF and microwave design, so most of its devices on the library are microwave devices. Circuit Simulation:
More informationAgilent 8510-13 Measuring Noninsertable Devices
Agilent 8510-13 Measuring Noninsertable Devices Product Note A new technique for measuring components using the 8510C Network Analyzer Introduction The majority of devices used in real-world microwave
More informationfor Communication Systems Protection EMI CD-ROM INCLUDED
Krešimir Malarić EMI Protection for Communication Systems CD-ROM INCLUDED Contents Preface xiii CHAPTER 1 Communications Systems 1 1.1 Components of Communications Systems 1 1.2 Transmitter Systems 2 1.2.1
More informationThe Critical Length of a Transmission Line
Page 1 of 9 The Critical Length of a Transmission Line Dr. Eric Bogatin President, Bogatin Enterprises Oct 1, 2004 Abstract A transmission line is always a transmission line. However, if it is physically
More informationThe Design & Test of Broadband Launches up to 50 GHz on Thin & Thick Substrates
The Performance Leader in Microwave Connectors The Design & Test of Broadband Launches up to 50 GHz on Thin & Thick Substrates Thin Substrate: 8 mil Rogers R04003 Substrate Thick Substrate: 30 mil Rogers
More informationAnalysis of Broadband Slot Cut Semi-Circular Microstrip Antennas
Analysis of Broadband Slot Cut Semi-Circular Microstrip Antennas Amit A. Deshmukh EXTC, DJSCOE Vile Parle (W), Mumbai, India Ankita R. Jain EXTC, DJSCOE Vile Parle (W), Mumbai, India Apurva A. Joshi EXTC,
More informationMeasurement of Multi-Port S-Parameters using Four-Port Network Analyzer
JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, VOL.13, NO.6, DECEMBER, 2013 http://dx.doi.org/10.5573/jsts.2013.13.6.589 Measurement of Multi-Port S-Parameters using Four-Port Network Analyzer Jongmin
More informationCo-simulation of Microwave Networks. Sanghoon Shin, Ph.D. RS Microwave
Co-simulation of Microwave Networks Sanghoon Shin, Ph.D. RS Microwave Outline Brief review of EM solvers 2D and 3D EM simulators Technical Tips for EM solvers Co-simulated Examples of RF filters and Diplexer
More informationPaul Wade, W1GHZ. 161 Center Rd Shirley, MA 01464 w1ghz@arrl.net. Figure 1 WR-75 waveguide to coax transition for 10 GHz. 1 Notes appear on page 16.
Rectangular Waveguide to Coax Transition Design Learn how to find the optimum dimensions for a waveguide to coax transition using an empirical approach that relies on a set of impedance measurements and
More informationMeasurement of Inductor Q with the MSA Sam Wetterlin 3/31/11. Equation 1 Determining Resonant Q from Inductor Q and Capacitor Q
Measurement of Inductor with the MSA Sam Wetterlin 3/31/11 The of an inductor, which is its reactance divided by its internal series resistance, is used as an indication of how well it will perform at
More informationA New Concept of PTP Vector Network Analyzer
A New Concept of PTP Vector Network Analyzer Vadim Závodný, Karel Hoffmann and Zbynek Skvor Department of Electromagnetic Field, Faculty of Electrical Engineering, Czech Technical University, Technická,
More informationCoaxial End-Launched and Microstrip to Partial H-Plane Waveguide Transitions
1 Coaxial End-Launched and Microstrip to Partial H-Plane Waveguide Transitions Kevin H. Kloke, Johan Joubert, Senior Member, IEEE, and Johann W. Odendaal, Senior Member, IEEE Abstract Conventional rectangular
More informationMEASUREMENT SET-UP FOR TRAPS
Completed on 26th of June, 2012 MEASUREMENT SET-UP FOR TRAPS AUTHOR: IW2FND Attolini Lucio Via XXV Aprile, 52/B 26037 San Giovanni in Croce (CR) - Italy iw2fnd@gmail.com Trappole_01_EN 1 1 DESCRIPTION...3
More informationComparative analysis for Bandwidth Enhancement of RMPA using EBG and varying feed line lengths
Comparative analysis for Bandwidth Enhancement of RMPA using EBG and varying feed line lengths Tripti Basedia 1 1 EC Deptt., SRIT, India, Jabalpur Rahul Koshtha 2 EC Deptt., SRIT, India, Jabalpur ---------------------------------------------------------------------***---------------------------------------------------------------------
More informationUNDERSTANDING NOISE PARAMETER MEASUREMENTS (AN-60-040)
UNDERSTANDING NOISE PARAMETER MEASUREMENTS (AN-60-040 Overview This application note reviews noise theory & measurements and S-parameter measurements used to characterize transistors and amplifiers at
More informationDesign and Electromagnetic Modeling of E-Plane Sectoral Horn Antenna For Ultra Wide Band Applications On WR-137 & WR- 62 Waveguides
International Journal of Engineering Science Invention ISSN (Online): 2319 6734, ISSN (Print): 2319 6726 Volume 3 Issue 7ǁ July 2014 ǁ PP.11-17 Design and Electromagnetic Modeling of E-Plane Sectoral Horn
More informationSimulation of Mobile Phone Antenna Performance
Tough technical requirements are being put on handsets. Mobile phones have to deal with an ever increasing number of services, while at the same time the cost of the systems is being reduced. RD in the
More informationA wave lab inside a coaxial cable
INSTITUTE OF PHYSICS PUBLISHING Eur. J. Phys. 25 (2004) 581 591 EUROPEAN JOURNAL OF PHYSICS PII: S0143-0807(04)76273-X A wave lab inside a coaxial cable JoãoMSerra,MiguelCBrito,JMaiaAlves and A M Vallera
More informationMEASUREMENT OF COMPLEX PERMITTIVITY OF LIQUIDS USING WAVEGUIDE TECHNIQUES
Progress In Electromagnetics Research, PIER 42, 131 142, 2003 MEASUREMENT OF COMPLEX PERMITTIVITY OF LIQUIDS USING WAVEGUIDE TECHNIQUES Y. Wang and M. N. Afsar Department of Electrical and Computer Engineering
More informationUsing Simple Calibration Load Models to Improve Accuracy of Vector Network Analyzer Measurements
Using Simple Calibration Load Models to Improve Accuracy of Vector Network Analyzer Measurements Nick M. Ridler 1 and Nils Nazoa 2 1 National Physical Laboratory, UK (www.npl.co.uk) 2 LA Techniques Ltd,
More informationExperiment 7: Familiarization with the Network Analyzer
Experiment 7: Familiarization with the Network Analyzer Measurements to characterize networks at high frequencies (RF and microwave frequencies) are usually done in terms of scattering parameters (S parameters).
More informationCommon Mode and Differential Mode Noise Filtering
Summary Introduction This application note gives a practical explanation of differential mode and common mode noise along with the traditional filtering approaches. In addition, an alternative method of
More informationDigital Systems Ribbon Cables I CMPE 650. Ribbon Cables A ribbon cable is any cable having multiple conductors bound together in a flat, wide strip.
Ribbon Cables A ribbon cable is any cable having multiple conductors bound together in a flat, wide strip. Each dielectric configuration has different high-frequency characteristics. All configurations
More informationExperiments on the Basics of Electrostatics (Coulomb s law; Capacitor)
Experiments on the Basics of Electrostatics (Coulomb s law; Capacitor) ZDENĚK ŠABATKA Department of Physics Education, Faculty of Mathematics and Physics, Charles University in Prague The physics textbooks
More informationLOW LOSS CABLE PAG. 1
LOW LOSS CABLE PAG. 1 INTRODUCTION Following many requests we received regarding the need for low-loss custom cable assemblies, we have set up a special production of high performance coaxial cable assemblies
More informationProgress In Electromagnetics Research C, Vol. 38, 67 78, 2013
Progress In Electromagnetics Research C, Vol. 38, 67 78, 2013 DESIGN AND INVESTIGATION OF A DUAL-BAND ANNULAR RING SLOT ANTENNA FOR AIRCRAFT APPLICATIONS Li Sun *, Bao-Hua Sun, Guan-Xi Zhang, Dan Cao,
More informationConsequence for a dualband application
rel. bandwidth -6dB [%] DESIGN CONSIDERATIONS FOR INTEGRATED MOBILE PHONE ANTENNAS D. Manteuffel, A. Bahr, D. Heberling, I. Wolff IMST GmbH, Germany, e-mail: manteuffel@imst.de Abstract Based on the investigation
More informationEatman Associates 2014 Rockwall TX 800-388-4036 rev. October 1, 2014. Striplines and Microstrips (PCB Transmission Lines)
Eatman Associates 2014 Rockwall TX 800-388-4036 rev. October 1, 2014 Striplines and Microstrips (PCB Transmission Lines) Disclaimer: This presentation is merely a compilation of information from public
More informationComparison of Vector Network Analyzer and TDA Systems IConnect Generated S-Parameters
Comparison of Vector Network Analyzer and TDA Systems IConnect Generated S-Parameters Purpose: This technical note presents single-ended insertion loss ( SE IL) and return loss ( SE RL) data generated
More informationAn equivalent circuit of a loop antenna.
3.2.1. Circuit Modeling: Loop Impedance A loop antenna can be represented by a lumped circuit when its dimension is small with respect to a wavelength. In this representation, the circuit parameters (generally
More informationCircuit Simulation and Technical Support Tools
TDK EMC Technology Practice Section Circuit Simulation and Technical Support Tools TDK Corporation Application Center Tetsuya Umemura, Katsushi Ebata 1 Utilization of Computer Simulation In recent years,
More informationEmbedded FM/TV Antenna System
1 Embedded FM/TV Antenna System Final Report Prepared for By January 21, 2011 2 Table of Contents 1 Introduction... 5 2 Technical Specification... 6 3 Prototype Antenna... 7 4 FASTROAD Active module fabrication...
More informationProject 1: Rectangular Waveguide (HFSS)
Project 1: Rectangular Waveguide (HFSS) b ε r a a = 0.9 (2.286cm) b = 0.4 (1.016cm) ε r = 1.0 Objective Getting Started with HFSS (a tutorial) Using HFSS, simulate an air-filled WR-90 waveguide shown above.
More informationCable Analysis and Fault Detection using the Bode 100
Cable Analysis and Fault Detection using the Bode 100 By Stephan Synkule 2014 by OMICRON Lab V1.3 Visit www.omicron-lab.com for more information. Contact support@omicron-lab.com for technical support.
More informationApplication Note. PCIEC-85 PCI Express Jumper. High Speed Designs in PCI Express Applications Generation 3-8.0 GT/s
PCIEC-85 PCI Express Jumper High Speed Designs in PCI Express Applications Generation 3-8.0 GT/s Copyrights and Trademarks Copyright 2015, Inc. COPYRIGHTS, TRADEMARKS, and PATENTS Final Inch is a trademark
More informationA NOVEL SHIELD FOR GSM 1800 MHz BAND USING FREQUENCY SELECTIVE SURFACE
Progress In Electromagnetics Research Letters, Vol. 38, 193 199, 2013 A NOVEL SHIELD FOR GSM 1800 MHz BAND USING FREQUENCY SELECTIVE SURFACE Ramprabhu Sivasamy 1, *, Malathi Kanagasabai 1, Sanjay Baisakhiya
More informationMinimizing crosstalk in a high-speed cable-connector assembly.
Minimizing crosstalk in a high-speed cable-connector assembly. Evans, B.J. Calvo Giraldo, E. Motos Lopez, T. CERN, 1211 Geneva 23, Switzerland John.Evans@cern.ch Eva.Calvo.Giraldo@cern.ch Tomas.Motos-Lopez@cern.ch
More informationPrinted Dipole Array Fed with Parallel Stripline for Ku-band Applications
Printed Dipole Array Fed with Parallel Stripline for Ku-band Applications M. Dogan 1, 3,K. Özsoy 1, 2, and I.Tekin 1, 1 Electronics Engineering, Sabanci University, Istanbul, Turkey 2 Vestek Electronic
More informationAVR2006: Design and characterization of the Radio Controller Board's 2.4GHz PCB Antenna. Application Note. Features.
AVR26: Design and characterization of the Radio Controller Board's 2.4GHz PCB Antenna Features Radiation pattern Impedance measurements WIPL design files NEC model Application Note 1 Introduction This
More informationPart 2 Designing Combline Filters with Free Software Paul Wade W1GHZ 2014
Part 2 Designing Combline Filters with Free Software Paul Wade W1GHZ 2014 Combline filters have more variables than most other filter types, so design software is more complicated. For instance, interdigital
More informationPerturbation of near-field scan from connected cables Sørensen, Morten; Franek, Ondrej; Pedersen, Gert F.; Baltsen, Knud A.
Aalborg Universitet Perturbation of near-field scan from connected cables Sørensen, Morten; Franek, Ondrej; Pedersen, Gert F.; Baltsen, Knud A.; Ebert, Hans Published in: 2012 IEEE International Symposium
More informationAnatech Electronics, Inc.
Like all types of RF and microwave filters, ceramic filters have unique characteristics that differentiate them from their counterparts and make them useful for specific applications. Ceramic filters are
More informationExtending Rigid-Flex Printed Circuits to RF Frequencies
Extending -Flex Printed Circuits to RF Frequencies Robert Larmouth Teledyne Electronic Technologies 110 Lowell Rd., Hudson, NH 03051 (603) 889-6191 Gerald Schaffner Schaffner Consulting 10325 Caminito
More informationConnector Launch Design Guide
WILD RIVER TECHNOLOGY LLC Connector Launch Design Guide For Vertical Mount RF Connectors James Bell, Director of Engineering 4/23/2014 This guide will information on a typical launch design procedure,
More informationChanges PN532_Breakout board
Changes PN532_Breakout board Document: Changes PN532_Breakout board Department / Faculty : TechnoCentrum - Radboud University Nijmegen Contact: René Habraken Date: 17 May 2011 Doc. Version: 1.0 Contents
More informationApplying Error Correction to Network Analyzer Measurements. Application Note 1287-3. Table of Contents. Page
Applying Error Correction to Network Analyzer Measurements Application Note 287-3 Table of Contents Page Introduction 2 Sources of Errors and Types of Errors 3 Types of Error Correction 4 One-Port 4 The
More informationToday s handsets have to meet tough ELECTROMAGNETIC SIMULATION OF MOBILE PHONE ANTENNA PERFORMANCE
ELECTROMAGNETIC SIMULATION OF MOBILE PHONE ANTENNA PERFORMANCE The telecommunications sector is making great advances aimed at delivering an even stream of high-tech devices, covering the significant consumer
More informationECE 435 INTRODUCTION TO THE MICROWAVE NETWORK ANALYZER
ECE 435 INTRODUCTION TO THE MICROWAVE NETWORK ANALYZER Latest revision: October 1999 Introduction A vector network analyzer (VNA) is a device capable of measuring both the magnitude and phase of a sinusoidal
More information