Influence of feed probes on input impedance performance of patch antennas I. Proust, B. Sauviac, J.L.Amalric, H. Baudrand Institut National Poly techniquede Toulouse Loborotoire d'electronique, ENSEEIHT 2, rue Charles Comichel, 31071 Toulouse Cedex, FRANCE and Abstract The characterization of rectangular waveguides with electric or magnetic shield loaded with a metallic cylinder of arbitrary cro

Accurate CAD model for the analysis of microstrip Antennas of various form with a dielectric cover J P Damiano, R Staraj Laboratoire d'Electronique, Universite de Nice-Sophia Antipolis CNRSBat 4 LesLucioles1, 250 RueA.Einstein,06560 Valbonne, France Abstract We present an accurate analytical model for the determination of the electrical characteristics (resonant frequency, input impedance) of pr

An active patch antenna topology resistance FEY oscillator design u. Karacaoglu, N.S. Auila, I.D. Robertson and J. Watkins Communications Research Group, Dept. of Electronic & Electrical Engineering, King's College London, Strand, London, UK, WC2R 2LS Tel +44 (0)71873 2523 Fax +44 (0)71836 4781 based on negative Abstract An active microstrip patch antenna topology is presented which is based on

Design of aperture-coupled patch antenna arrays with multiple dielectric layers F. Rostan, E. Heidrich, W. Wiesbeck Institut fur Hochs~requenztechnik und Elektronik University of Karlsruhe, Kaiserstr. 12, 76128 Karlsruhe, Germany (Telephone: +49721/608-2522 Telefax: +49721/691865) Abstract Using inexpensive foam materials in the design of aperturecoupled patch antennas, large bandwidth and excell

A slot coupled microstrip antenna with a thick ground plane Kazunori Takeuchi Wataru Chujo Masayuki Fujise ATROptical and Radia Communications Research Laboratories, 2Chome, Hikaridai, Seika-cho, Sorakugun, Kyoto 619-02, Japan Tel.: +81 77495 1511; Fax +81 77495 1508; e-mail takeuchi-atr-rd.atrco.jp Abstract A thick ground plane for a slot-coupled microstrip antenna is proposed as a support and a

Analysis of device failures in a power-combining Jenshan Un and Tatsuo Itoh Department of Electrical Engineering, University of California, Los Angeles 405 Hilgard Avenue, LosAngeles, CA 90024, U.S.A. array Abstract The circuit performance of a power-combining array with device degradation was analyzed, The theoretical result shows that the circuit still oscillates in the in-phase mode when the

EHiciency characterization of small printed thick-film YBa2Cu30~X antennas L.P. Ivrissimtzis, M.J. Lancaster, T.S.M. Maclean., N.McN. Alford** Birmingham, dgboston,Birmingham,B15 2TT,UK. TEL.:+44 21 E 4144348; FAX: ++4421 4144291; e-mail Ivrissimtzis-vaxl.bham.ac.uk * School of Electronic and Electrical Engineering, University of **ICI AdvancedMaterials, PO Box 11, The Heath, Runcorn, Cheshire,

Development coverage of a compact antenna for global earth c. Abella(*), J. Peces(*), M. Marin(*), J. Martinez(**), K. Markus(***). (*) IRSA, Arroyofresno 19, 28035 Madrid; Phone +34 1.373.1250; Fax.+34.1.373.71.13 (** *): ESA/ESTEC (**1 RYMSA, Abstract This paper is on the development, under an ESA contract, of a new concept of antenna for global earth coverage in the C-band. The main improvem

Concurrent hybrid modelling of active microstrip antennas D.S. McDowall and V.F. Fusco, High Frequency Electronics Laboratory, Department of Electrical and Electronic E~gineering, The Queen's University of Belfast, Ashby Building, Stranmillis Road, Belfast, BT95AH, NorthernIreland,UnitedKingdom Abstract A concurrent algorithm for the detailed analysis of an active microstrip antenna is described

Design of multimode coaxial feeders for cassegrain antennas A. LOpezAlonso, J.L. Besada Sanmartin Departamento de Senales, Sistemas y Rodiocomunicaciones PolytechnicUniversityof Madrid 28040 MADRID. Phone & Fax: (3411 + 5432002 Abstract Several software tools have been developed to evaluate the radiation characteristics of Multimode (Multiflared) Conical and Coaxial Horns, Classical predesign too