A Broadband 4x4 Butler Matrix for Modern-Day Antennas Krzysztof Wincza1, Slawomir Gruszczynski1 Wroclaw University of Technology Institute of Telecommunications and Acoustics Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland Krzysztof.Wincza-pwr.wroc.pl, Slawomir.Gruszczynski-pwr.wroc.pl tel./fax. +48 71 320 25 30 Abstract - A broadband Butler matrix was designed manufactured and measured, excelle

CPW-fed patch antenna with switchable polarization sense. H. Aïssat, L. Cirio, M. Grzeskowiak, J. M. Laheurte, O. Picon University of Marne-la-Vallée, ESYCOM, 5 Bd Descartes, 77454 Marne-la-Vallée cedex 2, France Contact: haissat-univ-mlv.fr Phone: 0160957229 Fax: 0160957214 Abstract -- This paper presents the design and development of a CPW-fed microstrip patch antenna with polarization reconfig

Linearization of Mixers Using a Reconfigurable Transistor Pair for W-CDMA Mobile Terminals Tsz Yin YUM, Chi Hou CHAN, and Quan XUE Wireless Communications Research Center, City University of Hong Kong 83 Tat Chee Avenue, Kowloon, Hong Kong 50182327-student.cityu.edu.hk, eechic-cityu.edu.hk VCC Output M.N. RB2 BJT2 RB1 RF Choke CB Abstract -- We present new results in the development of a miniatur

Carbon Nanotube Composites for Broadband Microwave Absorbing Materials A. Saib1 , L. Bednarz1, R. Daussin2, C. Bailly2 , X. Lou3 , J.-M. Thomassin3, C. Pagnoulle3, C. Detrembleur3 , R. J´ r^ me3, and I. Huynen1 eo 1 Microwave Lab., Universit´ catholique de Louvain, e Place du Levant, 3, 1348 Louvain-la-Neuve, Belgium Phone: +32 (0)10 472310 Fax: +32 (0)10 478705 e-mail: saib-emic.ucl.ac.be 3 2

Miniaturisation of Antenna Arrays for Mobile Communications J. Weber, Ch. Volmer, K. Blau, R. Stephan, M.A. Hein Technische Universit¨ t Ilmenau, Department of RF and Microwave Techniques a P-O-Box 100565, 98684 Ilmenau, GERMANY +49 3677 69-1578, Joern.Weber-TU-Ilmenau.de Abstract-- The focus of this paper is the miniaturisation of antenna arrays, to exploit diversity schemes for mobile communicat

LTCC 3D Resonator Applied to the Design of a Very Compact Bandpass Filter for Q band Applications L. Rigaudeau1, P. Ferrand1, D. Baillargeat1, S. Bila1, S. Verdeyme1, M. Lahti2, T. Jaakola2 1 IRCOM ­ UMR 6615 ­ CNRS, University of Limoges, 123 Av A. Thomas, 87060 Limoges, France Email : laetitia.rigaudeau-ircom.unilim.fr 2 VTT ELECTRONICS, P.O. Box 1100 Kaitoväylä 1 FIN-90571 Oulu Finland process

High-Q 8-path Bandpass Filters Design for Broadband Wireless Radio-communication Ahmed El Oualkadi, Jean-Marie Paillot and Rachid Allam LAII-ESIP, Université de Poitiers, IUT- 4, avenue de Varsovie 16021 Angoulême, France Phone : +33545673228, Fax : +33545670237, E-Mail : ahmed.eloualkadi-ieee.org Abstract -- This paper proposes the design of a high-Q tuned 8-path banpass filters. These circuits,

Substrate Isolation in 90nm RF-CMOS Technology Céline BARBIER-PETOT1, Serge BARDY1, Christèle BIARD1 and Philippe DESCAMPS LaMIP (Laboratoire de Microélectronique ENSICAEN ­ Philips), 2 rue de la girafe BP5120 14079 CAEN, France, Phone : 02 31 45 22 45, Fax : 02 31 45 21 78 1 Philips Semiconductors, CTO-RFDS group, 2 rue de la girafe BP5120 14079 CAEN, France, Phone : 02 31 45 22 45, Fax : 02 31 4

BiCMOS MMIC class-E power amplifier for 5 to 6 GHz wireless communication systems Renato Negra and Werner B¨ chtold a Laboratory for Electromagnetic Fields and Microwave Electronics (IFH) Swiss Federal Institute of Technology (ETH) Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland Phone: +41 44 632 0834, Fax: +41 44 632 1198, E-mail: negra-ifh.ee.ethz.ch Abstract-- This work presents the design a

Left-Handed Material Composed of Shunt Capacitances in a Waveguide Hiroshi Kubo and Tsuyoshi Mukai Department of Electrical and Electronic Engineering, Yamaguchi University Tokiwadai 2-16-1, Ube-shi 755-8611, Japan, Phone +81-836-85-9416 kubo-yamaguchi-u.ac.jp, mukai-emlab.eee.yamaguchi-u.ac.jp x z Metal y 1.5mm 7.5mm Abstract-- A left-handed material with a simple structure in microwave frequenc