Radiometer Physics GmbH Meckenheim, Germany. Microwave, sub mm, THz Turn key radiometers, space technology Components, design, scientific expertise
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1 Radiometer Physics GmbH Meckenheim, Germany Microwave, sub mm, THz Turn key radiometers, space technology Components, design, scientific expertise
2 Founded 1973 by Dr. P. Zimmermann 40 (+) employees Design / fabrication of MW radiometers (mm, sub mm) Development of radiometer subsystems (oscillators, mixers, waveguide components, planar networks, amplifiers, optics, etc.) Radiometer Physics GmbH Active in the following fields: Radio Astronomy Plasma Physics ESR Spectroscopy Remote Sensing Space borne radiometers Network Analyzer Extensions 2
3 RPG GmbH Organization Company Management Managing Board M. Lüders (R&S), Ch. Evers (R&S), Dr. T. Rose (RPG), A. Walber (RPG) Managing Directors Dr. T. Rose, A. Walber Sales & Marketing Dr. H. Czekala, R. Henneberger Business Development Dr. H. Czekala, A. Walber, R. Henneberger, Dr. T. Rose Financials & Management Assistant K. Ley Business Divisions Rohde & Schwarz OEM RF Systems & Comp. A. Walber, J. Oelrichs Radiometer Systems Dr. T. Rose, A. Mombauer, Dr. H. Czekala R&D Projects R. Henneberger, Dr. M. Brandt, Dr. M. Philipp, Dr. B. Thomas FFTS Systems R. Henneberger Space Projects Dr. M. Brandt, Dr. M. Philipp R. Henneberger, Dr. H. Czekala Operations & Activities Design, Development & Analysis Component and System Development RF Component & Optics Simulations (CST, HFFS, ADS etc.) Space Environment Simulation & Analysis Meteorological Concepts & Retrievals Scientific Consultancy Software Development Manufacture & Integration Machine Shop Electroforming Facilities Clean Room MMIC Assembly RF Component Manufacturing R&S OEM Products Integration Meteorological Radiometer Integration Clean Room Space Product Integration PA/QA, Test & Verification Manufacturing Process Control Semi-Automated ICD Verification RF Performance Testing RF Calibration Antenna Pattern Measurements R&S High-Rel BI & Thermal Cycle Environmental Testing 3
4 Fields of activity (2010) Hornstrahler Förder- & 2% Entwicklungsprojekte 2% FFTS Spectrometer 3% Space 9% 20% (+) HF Komponenten & Systeme 21% Rohde&Schwarz 37% Rohde&Schwarz Radiometer HF Komponenten & Systeme Space Förder- & Entwicklungsprojekte Hornstrahler FFTS Spectrometer Radiometer 26% Umsatz RPG:
5 Technology toproduct Harmonic Balance Electrical Solvers Electromagnetic Simulation Engineering CAD CNC Knowledge, experience, precision and quality Design Development Machining + Integration Manufacture Integration and Test Local Oscillator Subsystem FIRST/HIFI Instrument on Herschel Satellite 5
6 Simulation and Design Capabilities CST Suite: 3D structure simulator (filters, circulators, ) Microwave Office: Harmonic Balance Analysis (mixers, multipliers) 6
7 Amplifier bonding (clean room, space standards) Mounting of all amplifier types Experience in micromachining Bonding and soldering to space standards 7
8 Schottky Mixer and Multiplier Improvements Planar technology Discrete Schottky devices Semi integrated and fullintegrated structures RAL Diode Two collaborations: STFC/RAL, UK ACST, Germany Air bridge Membranesubstrate Anode pillar (contact pad) ACST Diode Mandatory improvements for 800 to 1000 GHz circuit mountings: Reduced C j0 Reduced C str Smaller size Cathode pillar (contact pad) Membranesubstrate Air bridges Mesa with anode Back side ohmic Mesas Quasi vertical (QVD) single Diode (SD) 25μm Back side ohmic Protection pillars (contact pads) 50μm Anti parallel (APD) diode ESTEC Contract 22032/08/NL/JA: Sub Millimeter Wave Receiver Front End (at 664 GHz) ESTEC Contract 21628/08/NL/GLC: Integrated Schottky Structures (at 664 GHz) 8
9 Sample pictures UMS ACST Diode UMS MMIC GHz ACST/RAL GHz 900GHz Substrate Integrated SHM 664 GHz RAL APD 9
10 Improved Schottky Diodes: VNA Extender GHz GHz GHz GHz GHz GHz GHz GHz ( GHz) OEM Network Analyzer Frequency Extenders for Rohde & Schwarz Courtesy of Rohde & Schwarz 10
11 Improved Diodes: RPG sub harmonic mixers Art.-No. RF Range [GHz] DSB-Noise Temperature Conversion Gain (DSB) IF-Bandwidth Required LO Power Waveguide LO RF SHM K -5 db > 16GHz 6 dbm WR15 WR8 SHM K -6 db > 20 GHz 4-7 dbm WR12 WR6.5 SHM K -6 db > 16 GHz 2 dbm WR12 WR6.5 SHM K -4 / -5 db > 16 GHz 4 dbm WR10 WR5.1 SHM K -6 db > 18 GHz 4-7 dbm WR10 WR5.1 SHM K -7 db > 18 GHz 4-7 dbm WR6.5 WR3.4 SHM K -7 db > 18 GHz 4-7 dbm WR6.5 WR3.4 SHM K -6 / -7 db > 16 GHz 4-7 dbm WR6.5 WR2.8 SHM K -7/ -8 db > 16 GHz 7 dbm WR4.3 WR2.2 SHM K -8 db > 16 GHz 4-7 dbm WR3.4 WR1.5 11
12 Receiver technology 183 GHz example 183 GHz feeds and sub-harmonic mixers for ALMA-WVR Best 183 GHz receivers available Built in larger numbers Noise injection (RPG only manufacturer world wide) All ALMA water vapor radiometers equipped with RPG mixers and feeds 12
13 Space Products 13
14 Space Products (II) Space qualified front ends (China, FY 3): 90 GHz dual polarized receiver OMT + LNA + (either Direct Detection or Heterodyne) 150 GHz dual polarized receiver: OMT + SHM 14
15 Preparations for MetOp SG Ice Cloud Imager 15
16 Space Products (III) Space qualified front ends: 183 GHz (4 channels) for sensitive water vapour detection 90 GHz dual polarized receiver 150 GHz dual polarized receiver 16
17 Noise injection calibration up to 200 GHz K signal at 183 GHz with stable noise diode (15 db ENR) Magnetically switched isolators: Dicke switching up to 150 GHz with low insertion loss ( 1.0 db) Fast switching with low currents (small thermal effects, 100 ma, 0.5 V) Auto Calibration Receivers Allan Variance Stability: s Less dependent on external calibration targets (LN2)! ESA-ATPROP 15 / 90 GHz 17
18 Sub mm imaging receivers One Pixel and Multipixel Receiver: FMCW Radar 75 to 325 GHz CW Radar 8 Pixel Array GHz (ESA) and 8 Pixel Array 812 GHz, 4 Pixel Array 183 GHz Imaging, Security, Material Analysis, Science 18
19 Antenna Measurement Solutions Transmit / Receive Systems, Spectrum Analyzer Solutions: Full band GHz GHz GHz GHz GHz GHz GHz GHz GHz High Dynamic Receivers available at 90 GHz 183 GHz 220 GHz 324 GHz 502 GHz 640 GHz For compact ranges (antenna measurement facilities, phase + amplitude) 19
20 Radiometer Products Approx. 25 standalone multi-channel radiometers per year 20
21 Radiometers Deployments Lampedusa, Italy (humid, hot, salty) Dome C, Antarctica (3.300m, 25 to 80 C) Research Vessel Polarstern (Atlantic Ocean) ALMA site, Chile (5.500m above sea level) Zugspitze, Germany (2.800m, 35 C, 250km/h wind) AMMA campaign, Benin (West Africa, hot climate, dust) 21
22 Radiometers Deployments CAOS, Bangalore, India Zugspitze, Germany, 2650 m asl Kolkata, India Eureka, Ellesmere Island, Canada Ny Alesund, Spitsbergen, Norway Solar Patroller (SST) 22
23 MWSC: GHz for Latent Heat Flux 23
24 MWSC Integration 24
25 RPG FMCW 94 RPG FMCW 94 DP A Cloud Radar by RPG Frequency Modulated, Continuous Wave, 94 GHz Low mode for fog, high mode up to 12 km Re using RPG technology from Tx/Rx systems and network analysis Re using instrument infrastructure (housing, steering, control, data processing) frommicrowaveradiometers Supported by Fraunhofer Institute for RF Technology and Radar (FhG FHR, Wachtberg, Germany, formerly FGAN) Availability: Mid of 2013 Microwave Remote Sensing of the Boundary Layer ISTP 2012, L Aquila, RPG Radiometer Physics GmbH 25
26 RPG FMCW 94 Specifications (I) Operating Frequency: 94 GHz +/ 150 MHz IF Range: 0.5 MHz to 1.3 MHz Continuous Power: 500 mw (Solid State) T/R Type: Bi static Antenna Diameter: 500 mm Gain: 52 db Chirp Rate: 100 / sec Chirp Variations: 7 Passive LWP Channel: 89 Ghz (optional) Dynamic Range: 100 dbz to +20 dbz Microwave Remote Sensing of the Boundary Layer ISTP 2012, L Aquila, RPG Radiometer Physics GmbH 26
27 RPG FMCW 94 Specifications (II) Ranging: 10 m to 12 km Sampling Rate: 1 / 4 seconds Vertical Resolution: 1 m (r: 10m 600 m) 2 m (r: km) 4 m (r: km) 8 m (r: km) 16 m (r: km) Doppler Resolution: +/ 15 cm/sec Polarisation: v / h (optional) Availability: Mid of 2013 Possible extensions by Additional frequencies Passive microwave channels Polarisation options Microwave Remote Sensing of the Boundary Layer ISTP 2012, L Aquila, RPG Radiometer Physics GmbH 27
28 Reference Customers (selected) ESA ESTEC NASA/JPL EADS Astrium Thales Alenia Space SRON (Netherlands) CNES (France) DLR (Gerrmany) Chinese Space Agency (CAS, CSSAR, ) IRAM NIST (National Institute for Standards, USA) PTB (German institute for standards) CNRS (France) ESO (European Southern Observatory) Rohde & Schwarz AB millimetre Aerospace Corporation (USA) US Air Force, AFRL Research Labs ROKAF (South Korean Air Force) ARM (Atmospheric Radiation Monitoring, USA) KMA (Korean weather service) CNRS (France) UK Met Office KNMI (The Netherlands weather service) Meteo Swiss (Switzerland) Polish weather service Numerous Universities world wide AWI Alfred Wegener Institute f. Polar Research Numerous Universities and Research Institutions 28
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