Mehmet Ünlü B. Sc. in Dept. of Electrical and Electronics Eng., Middle East Technical Univ. (METU), Ankara, Turkey.

Transcription

1 Mehmet Ünlü Yıldırım Beyazıt University Electronics and Communication Eng. Dept., Ankara, Turkey Phone: / 1280 Educational Background Ph. D. in Dept. of Electrical and Electronics Eng., Middle East Technical Univ. (METU), Ankara, Turkey. Thesis title: Novel Impedance Tuner, Phase Shifter, and Vector Modulators Using RF MEMS Technology Supervisors: Assoc. Prof. Dr. Şimşek Demir and Prof. Dr. Tayfun Akın M. Sc. in Dept. of Electrical and Electronics Eng., Middle East Technical Univ. (METU), Ankara, Turkey. Thesis title: An Adjustable Impedance Matching Network Using RF MEMS Technology. Supervisors: Assoc. Prof. Dr. Şimşek Demir and Prof. Dr. Tayfun Akın B. Sc. in Dept. of Electrical and Electronics Eng., Middle East Technical Univ. (METU), Ankara, Turkey. Work Experience Jul present Dec Jul Nov Nov Mar Nov Sep Mar Jun Sep Oct Jun Jul Aug Jul Aug As assistant professor, Electronics and Communication Eng. Dept. Yıldırım Beyazıt University, Ankara, Turkey. As postdoctoral research fellow, Terahertz Electronics Laboratory EECS Department, University of Michigan, Ann Arbor, MI. As postdoctoral research scientist, RF Micro-Nano Group, Electrical and Computer Engineering Dept., Utah State University, Logan, UT. Working full-time at Cornell NanoScale Science & Technology Facility (CNF), Ithaca, NY. As postdoctoral researcher, METU-MEMS Center, METU, Ankara, Turkey. As researcher, METU-MEMS Center, METU, Ankara, Turkey. As research and teaching assistant, MEMS-VLSI and EMT Group, Dept. of Electrical and Electronics Eng., METU, Ankara, Turkey. As part-time engineer in ASELSAN Inc. ( Ankara, Turkey. As intern in TELSIM Inc. (currently Vodafone Turkey), Istanbul, Turkey. As intern in ASELSAN Inc., Ankara, Turkey. Research Interests Development of micromachined circuits for THz applications. Reconfigurable/broadband antennas and phased arrays. Development of nano switches for microwave/millimeterwave applications. Design, fabrication, and modeling of novel MEMS circuits for microwave/millimeterwave applications. Hybrid integration of MMIC/RFIC circuits with MEMS components. Design and modeling of periodic electromagnetic structures. Development of novel micro/nanofabrication processes. Hybrid / Monolithic packaging of MEMS components. Discontinuity modeling of coplanar waveguide and microstrip structures.

2 Projects Involved Nov present Project name: MEMS Reconfigurable Subwavelength Metallic Slits for Broadband Terahertz Modulation. Budget: Funded by the National Science Foundation (NSF). Position: Researcher under supervision of Prof. Mona Jarrahi. Design, development, and characterization of a miniature RF MEMS switches for broadband THz modulators. Assisting the THz design of the modulators. Nov Nov Project name: NEMS Integrated Reconfigurable Antenna operating at 150, 400, 700, 800, and 4900 MHz bands for Interoperable Public Safety Communications. Budget: $640k, funded by the National Institute of Justice (NIJ). Position: Team leader under supervision of Prof. Bedri Cetiner Design, development, and characterization of a surface micromachining process for novel DC-40 GHz, ohmic contact, series RF NEMS switches. Training and coaching three students/researchers on the design and fabrication of the proposed antenna. Integration of RF NEMS switches with the base of the antenna. Final measurement and characterization of the antenna. Training and coaching one PhD student on the MEMS fabrication process. Apr Apr Jun Nov Jun Jun Project name: Nanofabrication and Packaging Processes for Multifunctional Reconfigurable Antennas. Budget: $90k, funded by USTAR. Position: Team leader under supervision of Prof. Bedri Cetiner. Design, development, fabrication, packaging, measurement, and characterization of a monolithic, multifunctional, radiation pattern reconfigurable RF MEMS based antenna at 5 GHz. Project name: Name cannot be revealed because of nondisclosure agreement. The project is basically development of an RF MEMS phased array antenna for a mm-wave radar. Budget: $15M, funded by The Scientific and Technological Research Council of Turkey (TUBITAK) Position: RF MEMS team coleader under supervision of Prof. Simsek Demir. Leaded, as a coleader, preparation of the RF MEMS part of the project proposal which has a budget of $9 million. Technical feasibility and selection of component types and specs. Main responsible, as a coleader, of determination of the necessary cleanroom and RF testing equipment, selection of the vendors, and keeping the correspondences. Project name: mm-wave RF MEMS Production and Measurements. Budget: $4.5M, funded by Undersecretariat for Defence Industries of Turkey. Position: Project coleader under supervision of Prof. Tayfun Akin and Prof. Simsek Demir. Designed, developed, fabricated, measured, and characterized GHz, frequency reconfigurable RF MEMS phase shifter. Designed, developed, fabricated, measured, and characterized GHz, frequency reconfigurable, all-passive RF MEMS vector modulator. Guided the design and measurements of RF MEMS switches, tunable capacitors, phase shifters, and a phased array antenna. Guided the reliability and power handling measurements of the capacitive contact, shunt, RF MEMS switches. Leaded the packaging, integration, and anechoic chamber measurements of the RF MEMS phased array antenna. Main responsible of upgrading the 1-40 GHz measurement and characterization capabilities of the METU EEE Microwave and Millimeter Wave Research Laboratory to 67 GHz. This process included selection, purchasing, installation, and acceptance of more than 20 low and high frequency equipments and a temperature controlled, vacuum probe station. Trained and coached, as a coleader, four MSc and PhD students on a comprehensive

3 training which included design of RF MEMS components (both circuit and EM level simulations), hands on training for MEMS fabrication process, DC and RF measurements, and post measurement characterization. Jun Nov Project name: Industrial Micro-Electro-Mechanical Systems (MEMS). Budget: $10M, funded by Turkish State Planning Organization (DPT). Position: Researcher under supervision of Prof. Tayfun Akin. Developed, as one of the two leading people, of all three generations of the METU RF MEMS Fabrication Process. Main responsible of determining the design rules of the METU RF MEMS Fabrication process and preparing its documentation. Served as the tool managers of BALZERS BAS 450 PM planar magnetron sputtering system, Automegasandri 915B critical point drying system, Fibrotools electroplating setup, and Suss PMV 150 manual vacuum probe station. Had administrative level access to Veeco Dektak 8 Profiler, Veeco Wyko NT 1100 Profiler, and JEOL Scanning Electron Microscope. Jul Nov Project name: Design and Fabrication of a Receiver-on-a-chip as a System (104E048). Budget: $100k, funded by TUBITAK. Position: Team leader under supervision of Prof. Simsek Demir. Designed, developed, fabricated, packaged, measured, and characterized GHz RF MEMS triple stub impedance tuners for a 1-level packaged RF-frond-end. Contributed to the development of the multi-pin MEMS automated measurement setup (MAMS), which is a computer controlled RF MEMS test environment with up to 32 simultaneous controls. Leaded the packaging and integration of the whole RF-front-end. Training and coaching three students/researchers on the MEMS design, packaging, and integration to the proposed RF-front-end. Jan Oct Oct Sep Project name: Advanced MEMS for RF and Millimeter Wave Communications (AMICOM), Network of Excellence. Budget: 200k Euro, funded by EU 6 th Framework Program (FP6). Position: Project coleader under supervision of Prof. Simsek Demir, Prof. Ozlem Aydin Civi, and Prof. Tayfun Akin. Developed, as a coleader, the 3 rd Generation METU RF MEMS Fabrication Process which had more than 99% yield and by which a monolithic phased array (5 cm x 6 cm) could be fabricated successfully. Worked together with 28 research groups in Europe on several work packages. Was the leader of METU Group on an internal project, Reconfigurable Radio Front End (ReRaFE), where a MEMS based RF-front-end was designed with the collaboration of 10 research groups. Designed, fabricated, measured, packaged, integrated, and characterized a reconfigurable GHz RF MEMS impedance tuner for LNA input impedance tuning. Designed and measured RF MEMS switches and impedance tuner for two Multi Project Wafer (MPW) RF MEMS runs. Designed LTCC packages for RF MEMS switches. Trained and coached, as a coleader, two MSc students on a comprehensive training which included design of RF MEMS components (both circuit and EM level simulations), hands on training for MEMS fabrication process, DC and RF measurements, and post measurement characterization. Project name: Innovative Antennas for Emerging Terrestrial and Space-based Applications (102E036/COST 284). Budget: 80k Euro, funded by European Cooperation in Science and Technology (COST) Program and TUBITAK. Position: Senior researcher under supervision of Prof. Ozlem Aydin Civi. Guided the MEMS design, fabricated, and packaged a GHz frequency tunable, microstrip patch antenna. Guided the design, fabricated, and packaged a GHz and GHz dual frequency, tunable rectangular slot antenna.

4 Jun Dec Project name: Design and Production of Novel Multi-function Reconfigurable Antenna/Antenna Arrays by Micromachining Technology. Budget: $100k, funded by Turkish State Planning Organization (DPT). Position: Senior researcher under supervision of Prof. Ozlem Aydin Civi. Guided the MEMS design, fabricated, and packaged 6.5 and 8.5 GHz reconfigurable, monolithic, dual-frequency microstrip patch antenna. Guided the MEMS design, fabricated RF MEMS switches, and packaged 1.8, 1.9, and 2.4 GHz reconfigurable, hybrid, triple-frequency microstrip patch antenna. Development of the 2 nd Generation METU RF MEMS Fabrication Process. Mar Mar Project name: Development of RF Components with MEMS Technology (101E023). Budget: $120k, funded by TUBITAK. Position: Researcher under supervision of Prof. Sencer Koc. Design, fabrication, and measurement of RF MEMS switches and impedance tuners for 1-20 GHz band. Development of the 1 st generation METU RF MEMS Fabrication Process. Research Skills Cleanroom Testing / Metrology Design and Modeling Lithography: Contact lithography (with several contact aligners), laser direct writing (both wafer and mask processing), steppers (user level), e-beam lithography (user level). Metal deposition: DC/RF sputtering (Au, Cu, Ti, Al, Cr, TaN, SiCr), thermal and e-beam evaporation (Au, Cu, Ti, Al, Cr) and electroplating (Au, Cu, Ni). Used several tools. Dielectric deposition and patterning: PECVD (Si x N y, SiO 2, a-si). Used several tools. Dry etching: RIE (Si x N y, SiO 2, polyimide, PMMA, a-si). Used several tools. Wet etching: Various metals and alloys. Organic materials: Polyimide, SU8, PMMA, BCB. Processing observation equipments: Hands-on experience including but not limited to optical profilers, surface profiles, SEMs, four-point probe stations, and stress measurement tools. Used several tools of all types. Test equipments: Hands-on experience including but not limited to vector network analyzers, semiconductor parameter analyzers, spectrum analyzers, LCR meters, probe stations (RF, DC measurements with vacuum and temperature control). Computer controlled measurement: HP-VEE, WinCal. EM Simulation Tools: Ansoft HFSS, Ansoft Ensemble, ADS Momentum, CST. RF Circuit Simulation Tools: AWR Microwave Office, ADS, Filpro. MEMS Simulation Tools: Coventorware. VLSI Design Tools: Cadence Integrated Circuit Design Environment. Mathematical Modeling Tools: MATLAB, Mathematica, Scientific Workplace. FPGA Design Tools: Xilinx, VHDL. Teaching Experience Dr. Unlu worked as a teaching assistant in 5 different undergraduate courses. He also graded more than 10 undergraduate courses. The details are available upon request.

5 Publications Patents 1. M. Unlu, S. Demir, and T. Akin, Simultaneous Phase and Amplitude Control Using Triple Stub Topology and Its Implementation Using RF MEMS Technology, PCT/TR2009/ Journal Publications - Peer-reviewed (Published) 1. M. Unlu, S. Demir, and T. Akin, Triple Stub Circuit Topology as Simultaneous Insertion Phase, Amplitude and Impedance Control Circuit for Phased Array Applications, IET Microwaves, Antennas and Propagation, accepted for publication, M. Unlu, K. Topalli, H. I. Atasoy, S. Demir, O. Aydin Civi, and T. Akin, Hybrid Connection of RF MEMS and SMT Components in an Impedance Tuner, AEU International Journal of Electronics and Communications, vol. 64, no. 8, pp , Aug K. Topalli, M. Unlu, H. I. Atasoy, O. A. Civi, S. Demir, and T. Akin, Empirical Formulation of Bridge Inductance in Inductively Tuned RF MEMS Shunt Switches, Progress In Electromagnetics Research, PIER 97, pp , E. Erdil, K. Topalli, M. Unlu, O. Aydin Civi, and T. Akin, "Frequency tunable microstrip patch antenna using RF MEMS technology," IEEE Trans. Antennas and Propagation, vol. 55, no. 4, pp , Apr K. Topalli, M. Unlu, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, A new approach for modeling Distributed MEMS Transmission Lines, IEE Proc. Microwaves, Antennas & Propagation, vol. 153, pp , Apr Journal Publications - Peer-reviewed (Submitted) 6. C. W. Berry, M. R. Hashemi, M. Unlu, M. Jarrahi, "Significant radiation enhancement in photoconductive Terahertz emitters by incorporating plasmonic contact electrodes," International Conference Publications - Refereed 1. C. W. Berry, M. Unlu, M. R. Hashemi, M. Jarrahi, "Use of plasmonic gratings for enhancing the quantum efficiency of photoconductive Terahertz sources," Proc. International Conference on Infrared, Millimeter, and Terahertz Waves, Wollongong, Australia, Sep , S. Li, M. Unlu, M. Jarrahi, "Reconfigurable mesh filters for Terahertz modulation," Proc. International Conference on Infrared, Millimeter, and Terahertz Waves, Wollongong, Australia, Sep , M. Unlu and S. Li, "Miniature MEMS switches for reconfigurable Terahertz metamaterials," 13 th Int. Symp. on RF MEMS and RF Microsystems (MEMSWAVE 2012), Antalya, Turkey, 2-4 Jul M. Unlu, Y. Damgaci, H. S. Mopidevi, O. Kaynar, and B. A. Cetiner, Reconfigurable, tri-band RF MEMS PIFA antenna, presented at the IEEE Int. Antennas and Propagation Symp., Spokane, WA, USA, Jul D. Rodrigo, Y. Damgaci, M. Unlu, B. A. Cetiner, J. Romeu and L. Jofre, Antenna reconfigurability based on a novel parasitic pixel layer, European Conf. on Antennas and Propagation, Rome, Italy, Apr. 2011, pp D. Rodrigo, L. Jofre, M. Unlu, Y. Damgaci, B. A. Cetiner, and J. Romeu, Genetic reconfigurability of a multisize pixelled antenna, presented at the IEEE Int. Conf. Wireless Information Technology and Systems (ICWITS), Honolulu, HI, USA, Aug. 28-Sept. 3, 2010, pp D. Rodrigo, Y. Damgaci, M. Unlu, L. Jofre, and B. A. Cetiner, Small pixelled antenna with MEMS- Reconfigurable radiation pattern, presented at the IEEE Int. Antennas and Propagation Symp., Toronto, Ontario, Canada, Jul. 2010, pp K. Topalli, M. Unlu, I. Istanbulluoglu, H. I. Atasoy, O. Bayraktar, O. Aydin Civi, Ş. Demir, S. Koc, and T. Akin, Reconfigurable RF MEMS devices and antennas, 5 th International Conference on Electrical and Electronics Engineering (ELECO 2007), pp , Bursa, Turkey, 5-9 Dec M. Unlu, H. I. Atasoy, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, "Double stub and triple stub RF MEMS impedance tuners," Proceedings of 8 th International Symposium on RF MEMS and RF Microsystems, MEMSWAVE, Barcelona, Spain, pp , Jun O. Bayraktar, K. Topalli, M. Unlu, O. Aydin Civi, S. Demir, and T. Akin, Beam switching reflectarray using RF MEMS technology, European Conference on Antennas and Propagation, Edinburgh, UK, Nov. 2007, pp O. Bayraktar, K. Topalli, M. Unlu, I. Istanbulluoglu, E. U. Temocin, H. I. Atasoy, O. A. Civi, S. Demir, S. Koc, T. Akin, Reconfigurable reflectarray using RF MEMS technology, European Conference on Antennas and Propagation, Nice, France, 6-10 Nov. 2006, on CD-ROM.

6 12. E. Erdil, K. Topalli, M. Unlu, I. Istanbulluoglu, E. U. Temocin, H. I. Atasoy, O. Bayraktar, O. A. Civi, S. Demir, S. Koc, T. Akin, Reconfigurable slot antenna with fixed-fixed beam type RF MEMS capacitors, European Conference on Antennas and Propagation, Nice, France, 6-10 Nov K. Topalli, M. Unlu, O. Aydin Civi, S. Demir, S. Koc, and T. Akin, A monolithic phased array using 3-bit RF MEMS phase shifters, 2006 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Albuquerque, New Mexico, USA, pp , Jul M. Unlu, K. Topalli, H. I. Atasoy, E. U. Temocin, I. Istanbulluoglu, O. Bayraktar, S. Demir, O. A. Civi, S. Koc, and T. Akin, A reconfigurable RF MEMS triple stub impedance matching network, European Microwave Conference 2006, Manchester, United Kingdom, pp , Sep H. I. Atasoy, K. Topalli, M. Unlu, I. Istanbulluoglu, O. Bayraktar, E. U. Temocin, S. Demir, O. A. Civi, S. Koc, and T. Akin, Investigation of on-wafer TRL calibration accuracy dependence on transitions and probe positioning, European Microwave Conference 2006, Manchester, United Kingdom, pp , Sep M. Secmen, K. Topalli, M. Unlu, E. Erdil, O. Aydin Civi, and A. Hizal; Dual wideband antenna analysis for linear FMCW radar applications, 2006 IEEE 14 th Signal Processing and Communications, pp. 1-4, Apr. 2006, Antalya, Turkey 17. H. I. Atasoy, K. Topalli, M. Unlu, I. Istanbulluoglu, E. U. Temocin, O. Bayraktar, S. Demir, O. Aydin-Civi, S. Koc, and T. Akin, Metal-to-metal and capacitive contact RF MEMS shunt switch structures, 7 th Workshop on MEMS for MilimeterWave Communications (MEMSWAVE), pp , Orvieto, Italy, Jun M. Unlu, K. Topalli, H. I. Atasoy, E. U. Temocin, I. Istanbulluoglu, O. Bayraktar, S. Demir, O. Aydin-Civi, S. Koc, and T. Akin, A reconfigurable RF MEMS impedance tuner for impedance matching of a two-stage low noise amplifier, 7 th Workshop on MEMS for MilimeterWave Communications (MEMSWAVE), pp , Orvieto, Italy, Jun S. Onat, M. Unlu, L. Alatan, S. Demir, and T. Akin, Design of a re-configurable dual frequency microstrip antenna with integrated RF MEMS switches, IEEE Antennas and Propagation Society International Symposium, Volume: 2A, pp , 3-8 Jul E. Erdil, S. Onat, K. Topalli, I. Istanbulluoglu, M. Unlu, S. Demir, L. Alatan, O. Aydin Civi, S. Koc, and T. Akin, Reconfigurable antenna structures using MEMS technology, 6 th Workshop on MEMS for MilimeterWave Communications (MEMSWAVE), pp , Switzerland, Jun M. Unlu, K. Topalli, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, A Parametric Study On Modeling Distributed Mems Transmission Lines, 34 th European Microwave Conference, pp , Amsterdam, The Netherlands, Oct , M. Unlu, K. Topalli, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, Design and modeling of a reconfigurable triple stub impedance matching network using Distributed MEMS Transmission Lines, 5 th Workshop on MEMS for MilimeterWave Communications (MEMSWAVE), pp. I17-I20, Uppsala, Sweden, 30 Jun.-2 Jul K. Topalli, M. Unlu, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, A parametric modeling study on Distributed MEMS Transmission Lines, 5 th Workshop on MEMS for MilimeterWave Communications (MEMSWAVE), pp Uppsala, Sweden, 30 Jun.-2 Jul K. Topalli, M. Unlu, H. Sagkol, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, A new model for Distributed MEMS Transmission Lines, 2004 AP-S International Symposium and USNC/URSI National Radio Science Meeting, pp , Monterey, California, Jun M. Unlu, K. Topalli, H. Sagkol, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, "New MEMS switch structures for antenna applications," 2002 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, p. 134, San Antonio, Texas, Jun M. Unlu, K. Topalli, H. Sagkol, S. Demir, O. Aydin Civi, S. Koc, and T. Akin, "RF MEMS adjustable impedance matching network and adjustable power divider," 2002 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, pp , San Antonio, Texas, Jun H. Sagkol, K. Topalli, M. Unlu, O. Aydin Civi, S. Koc, S. Demir, and T. Akin, "A monolithic phased array with RF MEMS technology," 2002 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, pp , San Antonio, Texas, Jun National Conference Publications - Refereed 1. E. U. Temoçin, K. Topallı, M. Ünlü, I. Istanbulluoğlu, H. I. Atasoy, Ö. Bayraktar, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, Eşdüzlemsel dalga klavuzundan mikroşerit hatta geçis üzerine çalısmalar, National URSI Symposium Turkey, pp , Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish).

7 2. Ö. Bayraktar, K. Topallı, M. Ünlü, I. Istanbulluoğlu, E. U. Temoçin, H. I. Atasoy, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, RF MEMS teknolojisi ile yansıtıcı dizi anteni tasarımı, National URSI Symposium Turkey, pp , Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish). 3. H. I. Atasoy, M. Ünlü, K. Topallı, I. Istanbulluoğlu, E. U. Temoçin, Ö. Bayraktar, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, TRL kalibrasyonunda uç konumlandırmasi ve geçislerin etkileri, National URSI Symposium Turkey, pp , Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish). 4. I. Istanbulluoğlu, K. Topallı, E. U. Temoçin, H. I. Atasoy, M. Ünlü, Ö. Bayraktar, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, RF MEMS teknolojisi kullanılarak tasarlanmış ayarlanabilir bant geçiren bağlanmış-hat süzgeç, National URSI Symposium Turkey, pp , Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish). 5. K. Topallı, M. Ünlü, Ö. Aydın Çivi, Ş. Demir, S. Koç ve T. Akın, RF MEMS teknolojisi ile tek parça faz dizili anten yapısı, National URSI Symposium Turkey, pp , Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish). 6. H. I. Atasoy, K. Topallı, M. Ünlü, I. Istanbulluoğlu, E. U. Temoçin, Ö. Bayraktar, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, RF MEMS teknolojisi ile kapasitif ve metal-metal bağlantılı paralel anahtar yapıları, National URSI Symposium Turkey, pp , Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish). 7. M. Ünlü, K. Topallı, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, RF MEMS teknolojisi ile ayarlanabilir empedans uyumlama devresi, National URSI Symposium Turkey, pp , Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish). 8. E. Erdil, K. Topallı, M. Ünlü, Ö. Aydın Çivi ve T. Akın, RF MEMS kapasitörler ile rezonans frekansı ayarlanabilen antenler, National URSI Symposium Turkey, pp , Hacettepe, Ankara, Türkiye, 6-8 Eylül 2006 (in Turkish). 9. K. Topallı, M. Ünlü, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, RF MEMS teknolojisi ile mikroşerit ve eşdüzlemsel dalga kılavuzu hat üstünde paralel anahtar yapıları, National URSI Symposium Turkey, pp , 8-10 September 2004 (in Turkish). 10. M. Ünlü, K. Topallı, Ş. Demir, Ö. Aydın Çivi, S. Koç ve T. Akın, Sıralanmış MEMS iletim hatları için yeni bir model, National URSI Symposium Turkey, pp , 8-10 September 2004 (in Turkish). 11. K. Topallı, H. Sağkol, M. Ünlü, Ö. Aydin Çivi, S. Demir, S. Koç ve T. Akın, "RF MEMS teknolojisi ile faz dizili anten," National URSI Symposium Turkey, pp , September 2002 (in Turkish). 12. H. Sağkol, M. Ünlü, K. Topallı, Ö. Aydin Çivi, Ş. Demir, S. Koç ve T. Akın, "RF MEMS teknolojisi ile mikrodalga faz kaydırıcıları," National URSI Symposium Turkey, pp , September 2002 (in Turkish). 13. M. Ünlü, H. Sağkol, K. Topallı, Ö. Aydin Çivi, Ş. Demir, S. Koç ve T. Akın, "RF MEMS teknolojisi ile ayarlanabilir empedans uyumlama ve güç bölücü devreleri," National URSI Symposium Turkey, pp , September 2002 (in Turkish). 14. M. Ünlü, H. Sağkol, K. Topallı, Ö. Aydin Çivi, Ş. Demir, S. Koç ve T. Akın, "Anten uygulamaları için yeni MEMS anahtar yapıları," National URSI Symposium Turkey, pp , September 2002 (in Turkish). Honors, Awards, and Academic Activities METU Thesis of the Year Award in 2009 for the Ph.D. dissertation, which was awarded by the Prof. Mustafa N. Parlar Education and Research Foundation. Fellowship given by TUBITAK during the whole Ph. D. study. Acceptance to M.Sc. and Ph. D. programs at METU with RA/TA offer. Acceptance to Aselsan Inc. as a full-time engineer (declined). Awarded with Good Use of Software and Good Use of Engineering in Implementation Awards for senior year project in Taken to the dean s honor list in METU for 5 times. Acceptance to minor program at METU Psychology Department. Ranked in the first < 0.05% over 1.4 million candidates in both steps of the nationwide university entrance examination of Turkey in 1997.