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Mutual coupling between longitudinal slots in cylindrical structures
Mutual coupling between longitudinal slots in cylindrical structures .Johan Wettergren* Ande,. Derneryd** *Chalmers Institute of Technology S-412 96, GOteborg, Sweden **Saab Ericsson Space AS S-405 15, GOteborg, Sweden Abstract We analyze coupling between longitudinal slots in general cylindrical structures. This is an extension of the normal procedure, to assume that waveguide slots are radiating
A reduced representation of the frequency-response of printed antennas
A reduced representation of the frequency-response of printed antennas . Giuseppe Vecchl, Paola Plrlnoll, Ladislau Matekovits, and Marlo Orefice Politecnico di Torino Dip. di Elettronica. 110129 Torino, Italy Abstract In this paper, a technique is presented to reduce the computational effort involved in the full-wave frequency analysis of printed antennas, as done via the Method of Moments (MoM)
Null control pattern for circular antenna arrays
Null control pattern antenna arrays Roberto Vescovo, Edoardo Carli for circular Dipartimento di Elettrotecnica Elettronica ed Informatica Universita di Trieste Via A Valerio, 10 34127 Trieste Italy - Abstract Circular arrays of equispaced isotropic elements are considered. For these structures, we propose a new technique that allows placing nulls at prescribed directions of interference in a g
Millimeter wave radar, intended for hydrometeor parameters determination
Millimeter wave radar, intended hydrometeor parameters determination A.e. Koaov, V.D.Gromov, e.N.Maleev, KI.elev, D.P.Skulachev, I.A. Strukov Allauthors are with Space Research Institute, Russian Academy of Sciences, Moscow, Russia. Address: 117810, Profsouznaya, 84/32, Moscow, Russia TeV Fax: (095)333-2267 E-mail: akosov@esocl.bitnet Abstract. this radar for fog and precipitation parameters measu
A novel linear-quadratic technique for coherent radar detection in mixed clutter environment
A novel linear-quadratic technique coherent radar detection in mixed clutter environment Fulvio Gini and Fabrizio Lombardini Department of Information Engineering, University of Pisa, Via Diotisalvi 2, 1-56126 Pisa, Italy. Tel +39-50-568550 Fax +39-50-568522 E-mail (Internet) gini@ iet.unipLit Abstract This paper introduces a sub-optimum procedure for the detection of a signal of known form in the
A single six-port reflectometer measures the scattering parameters of two- port microwave devices
A single six-port reflectometer measures the scattering parameters of two- port microwave devices Antonio".ro.nlmo ..llort d. Oliveira, Sergio Pedro Xavier Neto Departamento de Eletronica e Sistemas Centro de Tecnologia, Universidade Federal de Pernambuco, Cidade Universitaria, Recife, Pernambuco, Brasil Fax: 081-2718215 Email: belfort@npd.ufpe.br Abstract A single six-portreflectometerconfigurat
Novel 8-port polarimetric waveguide junction for characterisation of synthetic chiral media
Novel a-port pOlarimetric waveguide junction for characterisation of synthetic chiral media L R Arnaut and L E Davis Department of Electrical Engineering and Electronics, The University of Manchester Institute of Science and Technology, PO Box 88, Manchester M60 laD, UK Abstract Closed-waveguidemeasurements are reported on synthetic microwave chiral media at X-band frequencies using a novel 8-port
Automatic procedures for a simplified calibration of network analyzers
Automatic calibration Hans-Gerd Krekels* Burkhard Schiek** procedures of network and for a simplified analyzers *Bosch Telekom, Lindener Str. 15, 38300 WOlfenbOttel,Germany **InstitutfOrHochfrequenztechnik, Ruhr-Universitat Bochum UniversitatsstraBe 150,44780 Bochum, Germany Abstract Several automatically controlled procedures for a calibration of a network analyzer are presented. The procedure
The double-LNN calibration technique for scattering parameter measurements of microstrip devices
The double.LNN calibration technique for scattering parameter measurements of microstrip devices Holger Heuermann* Burkhard Schiek** *Rosenberger Hochfrequenztechnik, Postfach 1260,84526 Tittmoning, Germany **InstitutfOrHochfrequenztechnik, Ruhr-UniversiUit Bochum, 44780 Bochum, Germany Abstract This paper presents an alternative way of a network analyzer calibration, in particular an in-fixture c
A Novel 26-40 GHz Active Load Pull System
A Novel 26.40 GHz Active System c. Gaqule,. E. Bourcier B. Bonte, and Y. Crosnier Institut d'Electronique et de Microelectronique du Nord U.M.R. C.N.R.S.9929 Departement Hyperfrequences et Semiconducteurs Avenue Poincare B.P. 6959652 Villeneuve D'Ascq Cedex-France Abstract Anovelsortof fully automated 26-40GHz active load pull system is presented, based on a Wiltron 360 Networkanalyzer and a 3630