Soot particle properties in the microwave range R.P. Michel, R Saican., Universitat Mainz, i'vV'\INZ, FRG E. Schubert. 7, W-55 1 28 Institut fur Physik, Staudingerweg * Adam Opel AG, TEZ-VE 8017, W65423 RUSSELSHEIM;FRG Abstract This paper outlines the study of Diesel soot particle properties in the frequency band 2.0-40.0 GHz. Using a transmission/reflection as well as a cavity perturbation

Development of a radiocommunications prediction tool based on a physical modelling approach F.P. Fonmn, J.L. Albo, F. Isasi ETSIngenieros de Telecomunicaci6n. Universidad de Vigo. Campus Universitariode As Lagoas/Marcosende, 36200 Vigo (Spain) Tel 34-86-812137 Fax 34-86-812116 Abstract A 3D physical modelling approach to path loss prediction is addressed. GTD type models do not seem to produce a

Ultra low noise cooled S-band amplifier Alejandro Becerra., Manuel Sierra., Juan Daniel Gallego" * UniversidadPolitecnicade Madrid E.T.S.I.Telecomunicacion Ciudad universitaria.28040 Madrid. SpainTEL.341-3367360 FAX341-5432002 Yebes,(Guadalajara).Spain. TEL.3411-290311 290063 * * Instituto Geogr6fico Nacional. Centro Astronomico de Yebes FAX 3411- Abstract The design, fabrication and measurement

Low nose submillimetre radiotelescope A. Karpov, M. Voss, J. Blondel, M. Carter, B. LazareH, K.H. Gundlach 515 receiver for 30 m IRAM Institut de Radioasronomie Millimwtrique, 300, ruede la Piscine, DomaineUniversitaire Grenoble, St Martin d'Here, F-38406 de France Abstract A low noise SIS mixer receiver is prepared in IRAM for the operation at 0.8 mm wavelength on the 30 M telescope at Pico Ve

Low noise log-periodic 180 and 305 GHz Jose A. Lopez Fernandez*, T.LehnertU, F. Mattiocco** 515 open structure receiver at * Centro Astronomico YebesApartadode Correos 148, de 19080 Guadalajara, Spain TEL +34 11 2903] 1; FAX:+34 11 290063, e-mail Lopez-cay.es * * IRAM(lnstitutde Radioastronomie Millimetrique)300, Ruede la Piscine, 38406 Saint Martin d'Heres, France TEL:+33 76 824900; FAX:+33 765

Dielectric resonator based synchronizer multigigabit optical communications J. N. Matos, A. Gameiro, P. Monteiro, J.F.da Rocha Deport. Electronica Telecomunica~6es 3800 Aveiro PORTUGAL - Universidade de Aveiro for Telephone +351.34.25085 Fax +351.34381128 Abstract This paper deals with clock recovery circuits for multigigabit communications. For these bit rates simplicity is a key parameter. M

In orbit phase shift measurement transponder Michel Belfort, Michel Guieysse and Alain Lermoyer FRANCE TELECOM' CNET Paris B 38-40, rue du General leclerc, 92131 Issy-Ies-Moulineaux, FRANCE Tel: (33) 1 45 295565 Fax (33) 1 45 29 45 34 on a satellite . Abstract Due both to frequency down conversion on board geostationary communication satellites and Doppler effect, phase shift versus input drive

A fast automatic gain control for a RF amplifier used in a DCS1800 (PCN) base station transmitter x. Le Polozec, C. Trinh-Van, S. MuHat-Joly Societe Anonyme des Telecommunications Division Telecommunications 1 rueWatt, BP370 75626 Pariscedex 13, 1 France. Abstract After a brief review of the main characteristics required by a DCS1800 (PCN) transmitter, the paper presents the design of a fast feed

Electromagnetic energy coupled to a monopole a perfectly conducting rectangular cavity o. Drisse* D. Lecointe*, w. Tabbara* ,+, J.L. LasserreU, *Division Onde - L.S.S./Service d'eleclromagnetisme, +Universite Paris VI Ecole Superieure.d'Electricite, Plateau de Moulon, 91190 Gif sur Yvette, France Tel: +33-(1) 69.41.80.40; Fax: +33-( 1) 69.41.30.60 Glomal, France ** inside Centre d'Etudes de Gram

Fundamental mode propagation scattering by conducting cubes T. Rozzi, R. De Leo, L. Pierantoni, L. Zappelli. in GTEMcell and Dipartimentodi Elettronicaed Automatico - Universitodi Ancona Via Breece Bianche - 601 31 ANCONA - ITALY Abstract The GTEM cell is proving a useful tool for characterizing the electromagnetic scattering of objects under laboratory conditions. In this contribution, we pres