Highly Selective Microstrip Bandpass Filters in Ka-Band Yu-Meng Yan, Ying-Tang Chang, Huei Wang, Ruey-Beei Wu, and Chun Hsiung Chen Department of Electrical Engineering and Graduate Institute of Communication Engineering, National Taiwan University, Taipei 106, Taiwan Tel: 886-2-23635251-x221, Fax: 886-2-23638247, E-mail: chchen-ew.ee.ntu.edu.tw Highly selective microstrip bandpass filters in Ka-b

NOVEL COUPLED-LINE MICROSTRIP BANDPASS FILTER WITH 2nd & 3rd SPURIOUS PASSBANDS SUPPRESSION S. W. Ting, K. P. Lei, C. P. Chiang, and K.W. Tam Faculty of Science & Technology, University of Macau, P.O. Box 3001, Macau, China (Email: tonyting-umac.mo) Abstract ­ In this paper, a novel parallel coupled-line filter structure based on a reformulation of the sinusoidal modulation of the wiggly-line filt

DOE Based Design Method For Coupled-Lines Narrow Bandpass Filter Response Improvement. Gaëtan PRIGENT, Eric RIUS, François LE PENNEC, Sandrick LE MAGUER Michel NEY, Marcel LE FLOCH. LEST- UBO/ENST-Br, BP 809, 29285 Brest Cedex, France. Tel : +(33) 2 98 01 70 79, Fax : +(33) 2 98 01 63 95 E-mail : Gaetan.Prigent-univ-brest.fr Abstract -- In this paper we discuss about various modifications of class

Design Of Microstrip Duplexers For Mobile Communications Using Single-Sided Filters Giuseppe Macchiarella*, Alberto Bovatti** * Dipartimento di Elettronica e informazione del Politecnico di Milano Piazza Leonardo da Vinci, 32 20133 Milano, ITALY e-mail: macchiar-elet.polimi.it ** FOREM S.r.l. , Via Archimede 22/24, 20041 Agrate Brianza (Mi), ITALY ABSTRACT This paper describes a novel approach to

1 Design of Planer type Comb-Line Bandpass Filter And Design Parameter Extraction Using FE Analysis Jae-Ho Youn, Hyeong-Seok Kim, Byeong-Gwon Kang, Jun-Seok Park, Sun-Hyung Kim, and Jae-Bong Lim Division of Information Technology Engineering, Soonchunhyang Univ., Asan, 336-745, Korea Department of EE, Kookmin Univ. Seoul, 136-702, Korea coupled-line to meet the calculated design parameter valu

Flat Limited Scanning Phased Array Antenna for DBS Reception A. Toshev, E. Totomanov, M. Gatchev, B. Marinov, I. Stoyanov, S. Kamenopolsky Sky Gate BG, 2A Mogilata str., 1700-Sofia, Bulgaria, e-mail: toshev_a-skygate.bg A flat limited scanning phased array antenna working at 12.2-12.7GHz and suitable for DBS satellite reception is presented. The antenna utilizes a patented phase control device tha

CAD AND MECHANICAL REALIZATION OF PLANAR, KA-BAND, 8x8 BUTLER MATRICES B. Piovano, L. Accatino, F. Muoio, G. Caille(*), M. Mongiardo(**) Telecom Italia Lab (formerly CSELT) via Reiss Romoli, 274 - 10148 Torino, Italy ¤¤ ABSTRACT DIEI, Universitµ di Perugia, I-06100 Perugia, Italy a ¤ ALCATEL Space, Toulouse Butler matrices of order four (4x4) have been recently investigated concerning their

MULTIBEAM ANTENNA IN MILLIMETER WAVES O. LAFOND, M. HIMDI Université de Rennes I, Institut d'Electronique et de Télécommunications de Rennes, UMR CNRS Campus de Beaulieu, 35042 Rennes Cedex, France Email : Olivier.Lafond-univ-rennes1.fr This paper deals with a multibeam antenna in 60 GHz band. This structure is based on a Butler Matrix which fed a four printed antenna array. Two different solution

A Stepwise Recursive Search Algorithm for Adaptive Control of the Electronically Steerable Parasitic Array Radiator Antenna Kyouichi IIGUSA, Jun CHENG, Takashi OHIRA ATR Adaptive Communications Research Laboratories 2-2-2 Hikaridai, Keihanna Science City, Kyoto 619-0288, Japan, e-mail: {iigusa, cheng, ohira}-atr.co.jp A stepwise recursive search algorithm (SRSA) is proposed for adaptively controll

Double-Layer Structure of Rectangular-Waveguides for Butler Matrix J. Hirokawa, M. Furukawa*, K. Tsunekawa**, N. Goto*** Dept. of Electrical & Electronic Eng., Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro, Tokyo 152-8552, Japan, jiro-antenna.pe.titech.ac.jp * Microwave Circuit Div., Nihon Dengyo Kosaku Co., Ltd, 3 Takenouchi, Sakado, Saitama 350-0264, Japan, m-furukawa-ndk-k.co.jp ** Wi