A 60-GHz 4th Subharmonic Phase-Conjugated Retrodirective Array Ji-Yong Park Student Member, IEEE and Tatsuo Itoh Fellow, IEEE Department of Electrical Engineering, University of California, Los Angeles, 405 Hilgard Ave., Los Angeles, CA 90095-1594, U.S.A. E-mail : jypark98-ucla.edu Abstract -- A 60-GHz 4th subharmonic phaseconjugated retrodirective linear array with four elements is proposed. A 4t

AN ADVANCED EQUIVALENT CIRCUIT OF SPIRAL-SHAPED DEFECTED GROUND STRUCTURE 1) Jong-Sik Lim, 2) Chul-Soo Kim, 3) Yong-Chae Jeong, 2) Dal Ahn, and 4) Sangwook Nam 1) Korean Intellectual Property Office, Rep. Of Korea 2) Division of Information Technology Engineering, Soonchunhyang Univ., Rep. Of Korea 3) Division of Information and Electronic Engineering, Chonbuk National Univ., Rep. Of Korea 4) Sc

A HIGH TEMPERATURE SUPERCONDUCTING FILTER FOR FUTURE MOBILE TELECOMMUNICATION SYSTEMS Eamon P. McErlean and Jia-Sheng Hong Department of Electrical, Electronic & Computer Engineering Heriot-Watt University, Edinburgh EH14 4AS, Tel: - +44(0) 131 451 3328 E.McErlean-hw.ac.uk, J.Hong-hw.ac.uk Abstract - This paper presents a narrow-band high temperature superconducting (HTS) bandpass filter of Yba2Cu

T/R "core chips" for S-, C- and, X-band radar systems Niklas Billström, Håkan Berg, Karin Gabrielson, Erik Hemmendorff and Marie Hertz. Ericsson Microwave Systems AB, S-431 84 Mölndal, Sweden Abstract -- This paper presents the design and measurement results of three MMIC core chips. The core chips; consisting of T/R-switches, multi-bit attenuators, multi-bit phase shifters, amplifiers and LVTTL l

Miniaturized 30 GHz DBF Transmitter Module for Broadband Mobile Satellite Communications Holger Pawlak1, Leif C. Stange1, Alexander Molke1, Arne F. Jacob1, Oliver Litschke2, Sybille Holzwarth2 1 Institut für Hochfrequenztechnik, TU Braunschweig, P.O. Box 3329, 38023 Braunschweig, Germany Phone: +49 (0)531/391-2017, (Fax: -2045), eMail: h.pawlak-tu-bs.de 2 IMST GmbH, Carl-Friedrich-Gauß Str. 2, 4

Conceptual Structure for the Integration of Antennas with Packaging Technology S. Mestdagh1, G.A.E. Vandenbosch1 1 K.U.Leuven, dep. ESAT-TELEMIC, Kasteelpark Arenberg 10, B-3001 Heverlee, Belgium Tel: +32 16 321150, Fax: +32 16 321986, E-mail: steven.mestdagh-esat.kuleuven.ac.be where B denotes the fractional bandwidth, the radiation efficiency, V the effective volume of the antenna, and 0 the o

High Efficiency 45W HPA for space Application N. LE GALLOU1, J.Y. TOUCHAIS1, J.F.VILLEMAZET1, A. DARBANDI1, J.L CAZAUX1, A. MALLET2, L. LAPIERRE2 2 ALCATEL SPACE, 26 Av. JF Champollion, 31037 Toulouse cedex, FRANCE CNES (French Space Agency), 18 Av. E. Belin 31401 Toulouse cedex 4, FRANCE e-mail : Nicolas.Le.Gallou-esa.int / Jean-Francois.Villemazet-space.alcatel.fr http://www.alcatel.com/space

Waveguide to microstrip transitions at 8.45 GHz Naiara Goia, Matthew Kelly, J. Piotr Starski Chalmers University of Technology, Dept of Microtechnology and Nanoscience, Microwave Electronics SE-412 96 Göteborg, Sweden Abstract -- This paper presents two different types of low insertion loss and good return loss waveguide to microstrip transitions intended to be used for a state-of-theart X-band c

An Analog Adaptive Feedforward Amplifier Linearizer Bo Shi1, Weiyun Shan1, Lars Sundström2 for Infocomm Research, 20 Science Park Road, #02-21/25 TeleTech Park, Singapore Science Park II, Singapore 117674 2 Ericsson Mobile Platforms AB, Scheelevevägen 15, SE-22183 Lund, Sweden Abstract -- Feedforward is a wideband linearization method capable for third generation mobile communication systems. Howe

A Compact Low-Cost Doppler Sensor MMIC in SiGe Technology for the ISM Band at 24 GHz P. Abele, A. Trasser, E. S¨ nmez, K.-B. Schad, A. Munding, and H. Schumacher o Dept. of Electron Devices and Circuits, University of Ulm, Germany email: pabele-ebs.e-technik.uni-ulm.de Phone: +49 731 5031593 Fax: +49 731 5031599 Abstract -- A Doppler sensor MMIC operating in the license free ISM band at 24 GHz usi