Realization of an Active Narrow Band Filter with Electronically Controlled Defects in a Microwave Bandgap Structure Michael J. Hill, Richard W. Ziolkowski, and John Papapolymerou The University of Arizona, Tucson Arizona, 85721-0104 E-mail: hillm-ece.arizona.edu Abstract - Microwave band gap structures (MBG) utilizing fixed defects have received much interest because of their ability to operate a

Stable Fabry-Perot Oscillator of High Combining Efficiency with Multiple Device Inserted in a Dielectric Minoru Sanagi, Hiroaki Takashima, and Shigeji Nogi Department, of Electrical and Electronic Engineering, Okayama University, Japan sanagi-elec.okayama-u.ac.jp takashima-micro.elec.okayama-u.ac.jp nogi-elec.okayama-u.ac.jp A b s t r a c t - An axially symmetrical Fabry- Perot oscillator with a

Low Phase Noise 38 GHz P-HEMT-Based Frequency Tripler Didier Bachelet, Student Member IEEE*, Ali Boudiaf, Member IEEE**, Christian Rumelhard, Member IEEE*** *Université de Marne la Vallée - Pôle Electronique Hautes Fréquences 5, Boulevard Descartes - 77454 Marne la Vallée Cedex 02 - France tel: (33) 1.60.95.72.79 - email: bachelet-univ-mlv.fr ** ATN Microwave, Boston - USA *** CNAM, Paris - France

Millimeter Wave Transmitters on the Basis of Spatial-Harmonic Magnetrons with Cold Secondary-Emission Cathode for Coherent Radar Systems K. Schünemann1, B. Trush2, D. Vavriv2, and V. Volkov2 1) Technical University Hamburg-Harburg, Institute of Microwave Engineering, D-21073 Hamburg, Denickestrasse 22, Germany schuenemann-tu-harburg.de 2) Institute of Radio Astronomy, 4 Chervonopraporna St., 6100

A low cost, high performance PLDRO for a 28 GHz LMDS system . J. L. Jiménez *, J. Gismero **, MZ B. Notario **, F. López*** * E.U.I. Telecomunicación UPM, España, C. Valencia Km 7, 28031 Madrid e-mail:jljimene-diac.upm.es, fax. 34913367361 ** G.M.R. E.T.S.I. Telecomunicación UPM, 28040 Madrid, España *** IKUSI S.A. Aptdo 1730, Martutene, 20080 San Sebastián, España Abstract - LMDS system in the b

Effects of a Lumped Element on Defected Ground Structures ° Dal Ahn, Chul-Soo Kim, Guen-Young Kim*, and Jun-Seok Park Dept. of Electronics, Soonchunhyang Univ., Chungnam, R.O.Korea *School of Engineering, Tamna Univ., R.O.Korea E-mail: dahn-ramrec.sch.ac.kr Abstract - In this paper, effects of a lumped element on a DGS (Defected Ground Structure), which is etched on the metallic ground plane, wer

The scattering effects of air bridges as used in coplanar MMI Klaus Beilenhoff Cs United Monolithic Se miconductors, Route Départe mentale 128 ­ BP 46, 91401 Orsa y, France Tel: +33 (0) 1 69 33 03 77, Fa x: +33 (0) 1 69 33 05 52, Email: klaus.beilenhoff-ums-gaas.c om Abstract - In this paper results of an analysis are presente d w hich lead to a better understanding of th e differen t scatterin

STUDY OF A NOVEL BROADSIDE COPLANAR WAVEGUIDE BY THE WAVE CONCEPT USING FFT-ALGORITHM R. S. N'Gongo1*, L. Cohen1, R. Garcia, H. Baudrand1, C. Zanchi2, and J. Puech2 1 E.N.S.E.E.I.H.T, 2, rue Charles Camichel, B.P.7122, 31071 Toulouse Cedex 7, FRANCE Centre National d'Etudes Spatiales CNES, 18 Avenue E.Belin, 34055 Toulouse, France Phone: 05.61.58.82.48 / Fax: 05.61.58.83.77/ e-mail: ngongo-len7.e

The Effect of the Loop Strip Width of CPW Open-Loop Resonator on Its Resonance Characteristics Ceyhun Karpuz and Adnan Görür Nigde University, Department of Electrical and Electronics Engineering, 51100 Nigde, TURKEY ckarpuz-alp.nigde.edu.tr agorur-alp.nigde.edu.tr Abstract - A novel coplanar waveguide (CPW) openloop resonator (OLR) is proposed for maximum miniaturization in uniplanar microwave a

A New Structure of Coupled Transmission Line Filters Ignasi Corbella, Javier Bará Universitat Politècnica de Catalunya. Barcelona. Spain corbella-tsc.upc.es ; bara-tsc.upc.es Abstract ­ A new structure of staggered coupled transmission line filters having about half the length of a conventional design is presented. Two topologies are presented, one including short circuits and quarter wavelength r