SYNTHESIS OF A HIGH EFFICIENCY CONICAL-HORN ANTENNA: EFFECT OF THE NEGATIVE FLARE ANGLE Hiroyuki Deguchi, Mikio Tsuji and Hiroshi Shigesawa Department of Electronics, Doshisha University Kyotanabe, Kyoto 610-0321, Japan E-mail: hdeguchi-mail.doshisha.ac.jp ABSTRACT In this paper, we propose a method to realize a high efficiency multiple-mode conical-horn antenna with low cross polarization. Contr

NEAR-FIELD AMPLITUDE MEASUREMENT OF PASSIVE INTERMODULATION IN ANTENNAS S. Hienonen, V. Golikov, V. S. Möttönen, P. Vainikainen and A. V. Räisänen Radio Laboratory, Helsinki University of Technology, P.O.Box 3000, FIN-02015 HUT, Finland. Tel: +358 9 4512936, Fax: +358 9 4512152, E-mail: sami.hienonen-hut.fi ABSTRACT Near-field measurement method of passive intermodulation (PIM) in antennas is intr

GENETIC ALGORITHMS FOR PREDICTING ANTENNA RADIATION PATTERNS FROM NEAR-FIELD MEASUREMENTS IN A SCREENED ROOM J.R.Pérez, J. Basterrechea Dpto. Ing. Comunicaciones, ETSIIT Universidad de Cantabria, Avda Los Castros s/n. 39005 Santander. Spain jperez-dicom.unican.es, basterrj-unican.es ABSTRACT A method for echo cancelling in a screened room is presented in this work. The method obtains an Antenna U

ANALYSIS OF CAVITY-BACKED MULTILAYER MICROSTRIP PATCH ARRAYS ON CONTINUOUS DIELECTRIC SUBSTRATES BY A HYBRID MODULAR TECHNIQUE Miguel A. González* , Juan Zapata 4 and José A. Encinar B Dpto. de Electromagnetismo y Teoría de Circuitos, E.T.S.I. Telecomunicación. Universidad Politécnica de Madrid. Ciudad Universitaria s/n, 28040 Madrid (Spain). * E-mail: mag-etc.upm.es, 4 jz-etc.upm.es, B encinar-et

PERFORMANCE OF EARTH STATION ANTENNAS LOCATED IN A CLUTTER ENVIRONMENT Maurizio Migliozzi, Clive Parini Queen Mary, University of London, Mile End Road, London E1 4NS, U.K. Tel: +44 882 3620, +44 882 5339, Fax: +44 882 7997 E-mail: m.migliozzi-elec.qmw.ac.uk, c.g.parini-elec.qmw.ac.uk ABSTRACT Until fairly recently satellite earth stations antenna were located in open sites and so any performance

A Sideways-Looking Radar and its Measuring Principles Masahiro Watanabe*, Kenji Inomata*, Shinsaku Noda*, Katsuji Okazaki*, Tadamasa Fukae* Hiroshi Yamabuchi * Industrial Electronics & Systems Laboratory, Mitsubishi Electric Corporation Amagasaki City, Hyogo 661-8661, Japan Phone: +81-6-6497-7714 Fax: +81-6-6497-7725 E-mail: watanabe-car.sdl.melco.co.jp Automotive Electronics Development Center

Multipurpose 76,5 GHz Near Field Radar Sensor Y. Venot *, W. Wiesbeck * Institut für Höchstfrequenztechnik und Elektronik, Kaiserstr. 12, 76128 Karlsruhe, Germany Tel: +49 (0)721 608 6252, Fax: +49 (0)721 691865, E-mail: yan.venot-etec.uni-karlsruhe.de Institut für Höchstfrequenztechnik und Elektronik, Kaiserstr. 12, 76128 Karlsruhe, Germany Tel: +49 (0)721 608 2522, E-mail: werner.wiesbeck-ete

Real-Time Processing of Noisy RF Pulses Mohamed I. Sobhy and Khaled H. Moustafa and Mostafa Y. Makkey The Electronic Engineering Laboratory The University of Kent at canterbury Canterbury, Kent, CT2 7NT, U.K. Tel +44 1227 823236 Fax +44 1227 456084 email: M.I.Sobhy-ukc.ac.uk Abstract: An algorithm is described for extracting an RF pulse from a noisy background and applying the output to a matched

A multi frequency radar for detecting landmines: design aspects and electrical performance P.van Genderen, P.Hakkaart, J.van Heijenoort, G.P.Hermans International Research Center for Telecommunications transmission and Radar Delft University of Technology, Faculty of Information Technology and Systems Mekelweg 4, P.O.Box 5031, 2600 GA Delft, The Netherlands e-mail: P.vanGenderen-ITS.TUDelft.NL ABS

NEW APPROACHES FOR MULTI-SCALE CIRCUIT ANALYSIS F. Surre , L. Cohen, H. Baudrand, J.C. Peuch LEN7/ENSEEIHT 2 rue Ch. Camichel, 31071 Toulouse, France Tel: +33 5 61 58 82 48, Fax: +33 5 61 58 82 37 e-mail: surre-len7.enseeiht.fr, cohen-len7.enseeiht.fr, baudranh-len7.enseeiht.fr, peuch-len7.enseeiht.fr ABSTRACT In this abstract, two new methods are presented for analysing multilevel circuits. The