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Temperature Characteristic of HQT Microwave Circulators
TEMPERATURE CHARACTERISTICS OF HQT MICROWAVE CIRCULATORS Jens Lenge, Robert Stonies, and Dirk Schulz University of Dortmund, ET-HFT Otto-Hahn-Str. 6, 44221 Dortmund, Germany lenge@hft.e-technik.uni-dortmund.de ABSTRACT We investigate the influence of temperature fluctuations on the performance of microwave circulators with measurements and numerical simulations. A wide temperature range is conside
Signal Prediction Techniques for the Analysis of Microwave Circulators
SIGNAL PREDICTION TECHNIQUES FOR THE ANALYSIS OF MICROWAVE CIRCULATORS Jens Lenge and Dirk Schulz University of Dortmund, ET-HFT Otto-Hahn-Str. 6, 44221 Dortmund, Germany lenge@hft.e-technik.uni-dortmund.de ABSTRACT We examine the effectiveness of signal prediction and spectrum extrapolation techniques for the acceleration and enhancement of numerical simulation algorithms for microwave circulator
Reduction of Temperature Coefficient of Capacitance in Microwave Ferroelectric Devices
REDUCTION OF TEMPERATURE COEFFICIENT OF CAPACITANCE IN MICROWAVE FERROELECTRIC DEVICES S. Gevorgian1,2, P. Petrov1,*, Z. Ivanov3, and E. Kollberg1 Department of Microelectronics, Chalmers University of Technology, Gothenburg, Sweden 2 Ericsson Microwave Systems, Moelndal, Sweden 3 Department of Microelectronics and Nanoscience, Chalmers University of Technology and Gothenburg University, 412 96 Go
4-Port Microstrip Ferrite Coupled-Line Circulator
4-port Microstrip Ferrite Coupled-Line Circulator CHAM KIONG QUECK and LIONEL E. DAVIS Microwave Engineering Group University of Manchester Institute of Science and Technology PO Box 88, Manchester M60 1QD Tel: 0161-2004757 Fax: 0161-2008712 Email: mchpicq2@fs2.ee.umist.ac.uk and l.davis@umist.ac.uk ABSTRACT A 4-port microstrip Ferrite Coupled-Line (FCL) circulator is designed at 11.4 GHz by casc
Mode-1 and Mode-2 Designs for 120 GHz Semiconductor Junction Circulators
Mode-1 and Mode-2 Designs for 120 GHz Semiconductor Junction Circulators Z.M. Ng, L.E. Davis and R. Sloan Microwave Engineering Group, Department of Electrical Engineering and Electronics, UMIST, P.O. Box 88, Manchester M60 1QD, UK Tel: 0161-2004757 Fax: 0161-2008712 Email Address: mchpizn2@stud.umist.ac.uk ABSTRACT Two theoretical designs for a 120 GHz semiconductor junction circulator based on
A Large-Signal Simulation Program for Multi-Stage Power Amplifier Modules by Using a Novel Interpolation
A Large-Signal Simulation Program for Multi-Stage Power Amplifier Modules by Using a Novel Interpolation Kazuhisa Yamauchi, Morishige Hieda, Kazutomi Mori, Koji Yamanaka, Yoshitada Iyama, Hiromasa Nakaguro and Tadashi Takagi Mitsubishi Electric Corporation 5-1-1 Ofuna, Kamakura, Kanagawa, 247-8501 Japan E-mail: yamakazu@isl.melco.co.jp ABSTRACT A large-signal simulation program for multi-stage po
New Solid State Power Amplifiers Design Using Large Signal S Parameters
New Solid State Power Amplifiers Design Using Large Signal S Parameters Mathieu Hazouard, E. Kerhervé and P. Jarry. IXL Microelectronics Laboratory - UMR 5818 CNRS - Bordeaux 1 University, 351, cours de la libération - 33405 Talence Cedex - France Phone: +33 (0) 556 842 611 / Fax: +33 (0) 556 371 545 / email: hazouard@ixl.u-bordeaux.fr Abstract A new method related to power amplifier design is de
High Power Amplifier Dynamic Modelling by Modified Volterra Series and Neural Network Tool
High Power Amplifier Dynamic Modeling by Modified Volterra Series and Neural Network Tool C.DOMINIQUE*, Y.MANCUSO*, P.DUEME*, J-L.GAUTIER** *THALES AIRBORNE SYSTEMS La Clef de St Pierre 1 bd Jean Moulin - 78852 Elancourt Cedex France Tel:+33 01.34.59.68.00 Fax:+33 01.34.59.55.99 - cyril.dominique@fr.thalesgroup.com **ENSEA Labo EMO - 6 avenue du Ponceau 95014 Cergy Pontoise Cedex Fra
Switchless Amplifier Switching Scheme for Efficient Transmission Power Control of MESFET High Power Amplifiers
SWITCHLESS AMPLIFIER SWITCHING SCHEME FOR EFFICIENT TRANSMISSION POWER CONTROL OF MESFET HIGH POWER AMPLIFIER Hiroshi Okazaki and Katsuhiko Araki NTT Network Innovation Laboratories 1-1, Hikarinooka, Yokosuka, Kanagawa 239-0847 JAPAN e-mail : okazaki@ieee.org ABSTRACT A novel scheme that provides efficient transmission power control (TPC) for user portable terminals of Ku-band satellite communica
MMIC Power Amplifier Output Combiner Network Considerations for S-Band Applications
MMIC POWER AMPLIFIER OUTPUT COMBINER NETWORK CONSIDERATIONS FOR S-BAND APPLICATIONS Bruce A. Bosco, Rudy Emrick, Steve Franson, Steve Rockwell Millimeter Wave & Optics Laboratory/Motorola Labs, 2501 South Price Road, Chandler, Arizona, 85248, USA, Phone: 480-732-6929, Fax: 480-732-5559, email: bruce.a.bosco@motorola.com ABSTRACT The output combiner network for any power amplifier application that