Miniaturized channel amplifier for Ku band satellite repeaters M. C. Comparini, M. Segbettini, A. Suriani Alenia Aerospazio, Space Division, Rome, Italy, Tel.: 39.6.4151.4107; Fax.: 39.6.4151.2507 ABSTRACT. This paper focuses on development by Alenia Aerospazio of a second generation miniaturized channel amplifier (CAMP), realized in a single macrohybrid integrating GaAs MMICs, digital and l

A NOVEL C-BAND 580W SSPA FOR MICROWAVE STATION SATELLITE COMMUNICATIONS EARTH ISHIDA Masatoshi, KOMATSU Noboru, W ADA Kenzo, 001 Y oshiaki, KUMURA Masayuki, FUJIWARA Eiji, *UMEZU Keiichi, *UEDA Sumio and *KAW AGUCHI Daisuke Microwave and Satellite Communications 4035 Ikebe-cho,Tsuzuki-ku,Yokohama,224 *NEC Engineering ,Ltd. 4388 Ikebe-cho,Tsuzuki-ku,Yokohama,224 Div. NEC Corporation Japan Japan

DEVELOPMENT AND FABRICATION OF A COIPACT INTEGRATED RF-HEAD FOR INMARSAT-M GROUND TERMINAL ASABBAN ,ABRlTEBARD and Y SHEMESH RAP AEL, POBOX 2250 HAlF A,3 102I, ISRAEL ABSTRACT This paper describes the design ,performance and fabrication of a compact and low cost RF-Head for Inmarsat-M applications. The RF-Head is part of a portable satellite communication terminal called "Caryphone" "Caryp

FREOUENCY DOIJBLING INTEGRA TED PUSH-PUSH ACTIVE MICROSTRIP TRANSPONDER D. Singh, P. Gardner and P.S. Hall School of Electronic and Electrical Engineering The University of Birmingham Edgbaston Birmingham B 15 2TT UK ABSTRACT A novel frequency doubling active microstrip antenna transponder circuit incorporating two in-house designed monolithic microwave integrated circuit (MMIC) amplifiers is pr

RFIC chipset for high performance, cellular radio test equipment. Alberto Caliumi* Member IEEE Leonardo Masini * Member IEEE Steen Bak Christensen** *Laboratori Fondazione Guglielmo Marconi Via Porrettana 123 - 1-40044 Pontecchio Marconi - ITALY **GlGA Milcparken 22 DK-2740 Skovlunde - DENMARK. ***ITALTEL 5S 17 Localita Boschetto L'Aquila - ITALY Marcello Aglietti*** Abstract- The design and real

New Confi2uration for TIR Switches Used in RF Transmitters Shimon Krausz Motorola Communications Israel 3, Kremenitski St. Tel-Aviv 67899, Israel. Abstract Many RF simplex transceivers employ a T/R switch configuration to switch between receive and transmit modes of operation. These switches usually employ a series switching diode on the transmit path. This diode is problematic; it introduces add

Low noise monolithic down converter for a L band mobile hand set terminal (1)(2) , Joao Costa Freire (I) Jorge Alves Torres (I)lnstituto das telecomunica(j:oes, Instituto Superior Tecnico Av. Rovisco Pais, 1096 Lisboa Codex, Portugal TEL:351-1-8418480 FAX:35 1-1-8418472 Email: jpat-lisboa.Ix.it.pt (2) Escola Nautica Infante Dom Henrique, Pa(j:od' Arcos, 2780 oeiras Portugal ABSTRACT We report on a

Monolithic Low Voltage Power Amplifier for Portable Low Range Transceiver Fernando Fortes, Maria Joao do Rosano, 1. Costa Freire Instituto de Telecomunica~oes, Instituto Superior Tecnico Av. Rovisco Pais, 1096 Lisboa, Portugal Tel: +351-1-8418491,; Fax: +351-1-8419341 e-mail: mrosario-beta.ist.utI.pt ABSTRACT This paper describes the design and test of a monolithic class A power amplifier wit

Coupling Characteristics of Microstrip Lines through a Slot in a Common Ground Plane Kazunbri KOBAYASHI, Toshio WAKABAYASHI, *Katsuhiro ONO School of Engineering, Tokai University 1117, Kitakaname, Hiratsuka,Kanagawa, 259-12 Japan E-mail:wakaba-et.u~tokai.ac.jp Phone:+Sl-463-5S-1211(Ext.4075) Fax:+Sl-463-5S-S320 . *Tokyo Electric Power Cornpany 1-1-3 Utisaiwai, Chiyoda, Tokyo, 100 Japan Phone:+S

A SYSTEM A TIC INVESTIGATION OF COPLANAR DISCONTINUITIES W. Menzel, M. Klaiber LINES AND Microwave Techniques, University ofUlm, D-89069 Ulm, Germany ABSTRACT A systematic investigation of coplanar lines is presented with respect to, on the one hand, different computation methods, and on the other hand, different effects like passivation layer, metallisation thickness, and skin effect. For th