A LOW NOISE FET AMPLIFIER FOR APPLICATIONS AT 12 GHz +) R. J. Teperek ABSTRACT This paper describes the performance of a commercially available 1/2 um gate FET chip in a "home madell package as a low noise amplifier at 12 GHz. The package can be easily inserted into and removed from an alumina microstrip circuit. A single stage circuit is described, which in conjunction with the FET and package

COMPUTER-~IDED DESIGN OF MICROSTRIP GaAs MESFET AMPLIFIERS O . Nl.elsen . . ABSTRACT Results on computer-aided design of broadband GaAs MESFET amplifiers in microstrip is presented. The analysis of an amplifier is based on measured scattering parameters and a model of the microstrip structure, which includes parasitics and junction effects. The optimized performance of one stage amplifiers

POWER Ga-As F.E.T. CHARACTERIZATION P. DUFOND and H. DEREWONKO* ABSTRACT: Microwave Ga-As F.E.T. characterization, starting from internal geometry is presented and extended to power F.E.T. A computer program, solving the transport equations for charge carriers in the channel versus biasing conditions and geometrical parameters, gives static characteristics and the equivalent circuit. Calculati

FILTERS AND MULTIPLEXERS FOR SATELLITE COMMUNICATIONS J D Rhodes* ABSTRACT During the last eight years significant advances have been made in the design and construction of microwave selective linear phase filters prompted by the need for maximum bandwidth utilisation in satellite communications. Very recently design procedures have been developed for selective linear phase channel multiplexer

RAY METHODS FOR EVANESCENT FIELDS+ Leopold B. Felsen* ABSTRACT This paper deals of high frequency with a review of recent evanescent fields. developments in the treatment Evanescent fields have conventionally been associated with guided modes. For dielectric waveguides, for example, the evanescent fields in a trapped (discrete) mode exist exterior to the guiding structure, and they are speci

A COMPOSITE X BAND HIGH POWER-FERRITE LIMITER V-Y Foo and C S Aitchison * ABSTRACT This paper outlines a qualitative model which describes the action of ferrite limiters. Using this model a simple composite sandwich and slab limiter has been designed and constructed and has given a threshold of 15 watts, a maxim power handling of 50 kW, corresponding to a dynamic range of 35 dB at 8.96 GHz. T

EXISTnfCE RmI01lS FOR EGW m MIC S'mUCTURES P. de Santis ABSTRACT EGW existence EGW resonator. regions are identified on the mode chart of a disk MIC 

THEORETICAL AND EXPERIMENTAL STUDY OF LOSS PARAMETERS AND HIGH ORDER IN OSEL DEVICES G. FORTERRE - J. MARCOUX L. COURTOIS ABSTRACT Non reciprocal devices using the dynamic surface mode can operate on a broad frequency band. However, beyond a given frequency, some higher order modes can propagate and this fact limits the operational bandwidth. A theoretical and experimental investigation of the

THE PERIPHERAL OR EDGE-GUIDEDMODESON THE INHOMOGENEOUSLY AND HOMOGENEOUSLY FERRITE LOADEDSTRIPLINE Donald M. Bolle* ABSTRACT: The results of a rigorously formulated solution of the edgeguided mode on inhomogeneouslyand homogeneously ferrite loaded stripline are presented. The assumption that the width of the stripline is sufficiently large so that interaction between the edges may be neglected, h

PROPAGATION IN THE FERRITE MICROS TRIP MAGNETIZED TO THE GROUND PLANE PERPENDICULARLY J. Mazur ~ ABSTRACT. The Fourier method of the dielectric micros trip line analysis proposed by Denlinger [i] is extended for the ferrite microstrip line case. After introduction of the fringing and edge mode effects, the logitudinal and transverse current distributions on the strip were used for solvin