NEW RESULTS IN DIVERSITY MODELING: GENERAL PROPERTIES AND ANGLE DIVERSITY I. FRIGYES, B. MOLNAR Budapest Technical University, Budapest, Hungary Abstract In this paper it is shown that synergism is an inherent property of multipath-distortioncountermeasures. Further a phenomenological model of angle diversity is given. Prediction method for the improvement ratio due to diversity is' given. Computa

UHF PROPAGATION MEASUREMENTS (FIVE CHANNELS) OF MOBILE RADIO COMBINING TECHNIQUES: CRITERIA IN SPACE DIvERSITY CHANNEL AND MSE, CMA. B. FEUVRIEl,2, J.F. DIOURIS2, J.SAILLA}ID2 1 IUT Departement Genie Electrique, 44041 NANTES Cedex 01, FRANCE 2 Laboratory S2HF/SEI, IRESTE, 44087 NANTES Cedex 03, FRANCE AB.SIJlAcr , This paper describes the design of a space diversity microwave combiner which i

A mini-TWT <)issipation ,amplifier with super-low for Ku-band user earth . power stations Nagahisa Mita Satellite Cqmmunjcation Systems Laboratory NTT Radio Communication Systems Laboratories 1-2356 Take, Yokosuka-shi, Kanagawa 238-03, Japan Abstr~ct A new collector has been developed for travelling wave tube (TWT) amplifiers. This new collector. has very low power dissipation under low duty p

ON-BOARD SIGNAL ACQUISITION STRATEGIES FOR DEEP SPACE TRANSPONDERS G.Boscagli M.C.Comparini R.Giordani M.Martone Alenia Spazio..; Via Tiburtina 1210, 00131 ROME, ITALY Phone +396-4151-3631 Fax +396-4151-3699 Abstract. On-board signal acquisition is a fundamental task for deep space missions when telecommand and/or ranging functions must be implemented. Local oscillator frequency instabilities and

Remote sensing of Acoustic Signals and Perturbations in Dense Medium Generated N.V. Suyazov, G.A. Lyakhov, K.F. Shipilov, E.A. vinogradov General Physics Institute, Russian Academy of Science, Moscow Abstract Distributed reflections of electromagnetic waves by running acoustic grating in two-layer medium have been considered as the new remote sensing methods for the registration of signals gener

Antenna Technologies for the Second Generation of European Meteorological Satellite. M. Lisi, V. Santachiara Alenia Spazio S.p.A., Via Saccomuro 24,00131 Rome, Italy Abstract. The authors describe the study and the development of the latest generation of the European Meteorological Satellite, The paper focusses the spacecraft antenna farm, discussing all the technological aspects involved in the

A Portable Solid-State Millimeter-Wave Pulse Doppler Radar Sensor Adapted for Short Distance Safety Warning System, J. Nin, Y. M. Tao , J. Z. Xu and X. G. LtAbstract . The design construction and performance of an extremely low power drain and a small ' portable all solid -state millimeter wave pulse Doppler radar sensor operating at 35 GHz are described which can be used .for short distance

MICROSTRIP ANTENNAS PRINTED ON INCLINED PLANES TO CONSTITUTE ORIGINAL CONFORMAL PHASED ARRAYS Augustin D., Staraj R., Benevello 0., Cambiaggio E. Laboratoire d' Electronique Unite de Recherche Universite de Nice Sophia Antipolis Associee au CNRS nO 1400 250, rue A. Einstein, 06 560 Valbonne, France Tel.: 92.94.28.10 - Fax: 92.94.28.12 - - - ~ This paper presents an analysis of the electromagn

ACCURATE SYNTHESIS MODEL FOR MICROSTRIP ANTENNAS. WITH AUT(J¥~TIC CHOICEQF I:HE SHAP~ VERSUS PHYSICA~ AND GEOMRTRlCAL CRITERIA R. Staraj, J.-M. Ribero, J.-P. Damiano Laboratoire d'Electronique - UJiljversitede Nice-Sophia Antipolis URA CNRS 1400- 250,rue A. .Einst~in, 06560 Valbonne, France Tel: + 33~92;94.28.00';'Fax: +33 92.94.28.12 ABSTRACT An accurate synthesis model applied to multilayer pr

A CPW.FED ACTIVE MICROSTRIP ANTENNA WORKING C-BAND ',Laurent Giauffret, Jean-Marc Laheurte " IN THE ; 'Laboratoite d'Electronique, Antennes et Telecommunications UniversiiedeNice-Sophia Antipolis I C.N.R.S., rue Alben,Einstein, ' 06560 Valbonne, France. ~ Abstract: The design and perfonnance of a CPW-fed microstrip antenna integrated directly with a FET amplifier are presented. The SWR of