EIGENFREQUENCIES OF AN ELECTROMAGNETIC INNER SMALL SPHERE SPHERICAL CAVITY WITH AN ECCENTRIC J.A. Roumeliotis*, J.D. Kanellopoulos*, J.G. Fikioris* ABSTRACT Analytical expressions for the eigenfrequencies of an electromagnetic spherical cavity with an eccentric inner electrically small sphere are derived, for both magnetic and electric modes. The two spheres are perfectly conducting. Sph

THE HYBRID CONTINUOUS SPECTRUM OF THE INSET DIELECTRIC GUIDE AND ITS APPUCATION TO RECTANGULAR WAVEGUIDETO I.D.G. TRANSITIONS. P.D.seweU* and T.Rozzi**. ABSTRACT. The potential of the Inset Dielectric Guide,(I.D.G.),for both transmission and antenna applications has previously been demonstrated. The analysis of discontinuities in the guide, particularly strongly radiating discontinuities, requires

A 40 GHz/9 ps SAMPLING APPLICATIONS w. Thomann1, S.G.Knorr2, HEAD FOR WIDEBAND Men-P'ing Chang2* ABSTRACT The purpose of this research is the evaluation and the design of a 40 GHz/ 9 ps wideband sampling head with commercially available microwave components and without the use of digital compensation techniques or cryogenic cooling techniques. This paper discusses the considerable increase in

CURRENT STATUS AND FURTHER AMPLIFIERS RESEARCH. * D.M.VAVRIV,Yu.A.ROMANTSOV. ABSTRACT * PROGRESS IN THE SMITH-PURCELL Results are reviewed of an theoretical and experimental study of the Smith-Parcel amplifiers over the millimeter-and sub millimeter wave bands. The fundamentals of constructing such devices are discussed, the most promising design being pointed out. Two main leads for further re



A 300 GHZ HYBRID FORM ROTARY ATTENUATOR B. Stockel* ABSTRACT The modelling, design and test of a variable attenuation standard /1/ for 240 -325 GHz is described. The connectors are made in monomode rectangular waveguide technique and the virtual rotary attenuator in quasi-optical technique. Because of lack of measurement technique for 300 GHz the attenuator is modelled and tested for 60 90 GHz.

A NOVEL METHOD OF CAVITY RESONATOR COUPLING TO MICROSTRIP LINES H. o. Scheck Abstract cavity resonators have high Q-values, their manufacturing costs are low and they have small dimensions at mm-wave frequencies. A critical point for their application is the coupling to a microstrip circuit. An aperture in the back-plane of a microstrip line, in combination with a small patch provides a simple, ea

NETWORK ANALYSIS OF DISPERSION CHARACTERISTICS FOR PARTIALLY DIELECTRIC FILLED GROOVE GUIDES Xu Shanja ., Yin Lujun. ABSTRACT A transverse equivalent network representation for partially dielectric filled single and asymmetrical double groove guides are presented in this paper. Based on this, the dispersion characteristics of various groove guides are analysed by the microwave network approach.

APPLICATION SATURATING OF THE RIDF'S TO THE EVALUATION EDi ENVIROMENTS OF MONOPULSE ERRORS UNDER M. Burgos. F. Perez. J. Izquierdo. A. Rodriguez (-) ABSTRACT It is usually supposed that monopulse systems are immune to noise- jamming ECM's because of its internal ellimination of external amplitude and phase modulations. In the paper is proved that this is not true under saturating conditi

MICROWAVE IMAGE USING THE IMAGERY: RECONSTRUCTION ENTROPY METHOD MAXIMUM LEMO-ENSERG , BP 257 , 38016 BARIBAUD Michel and DAU THI THUY Lan GRENOBLE CEDEX , FRANCE Tel. (33)76 87 69 76 - FAX (33) 76 43 37 96 Abstract A new solving algorithm in the inverse problem of image reconstruction in microwave imagery, based on the principle of maximum entropy, is developped. The problem is reduced to a