HARMONIC-BALANCE ANALYSIS OF TEMPERATURE-DEPENDENT NONLINEAR MICROW AVE CIRCUITS Vittorio RIZZOLI (1), Alessandro LIPPARINI (1), Franco MASTRI (2) ABSTRAcr The paper introduces a novel numerical approach to the simulation of nonlinear microwave circuits containing temperature-dependent active devices. Making use of an extension of the classic piecewise harmonic-balance technique, the analysis is r

MIxed S~/Spadai Domain Moment Method Simuladon of Components and CIrcuits P J Draxler*, G E Howard**, Y L Chow** ABSTRACT Electromagnetic simulation of microwave circuits is an emerging technology. In the past it has been possible to analyze small to medium-sized structures on very large computers, but recent developments in method of moment (MoM) techniques and computer workstations have changed

THE USE OF MODE TEMPLATES TO IMPROVE THE ACCURACY OF THE FINITE DIFFERENCE TIME DOMAIN METHOD t C. J. Railton and J. P. McGeehan ABSTRACT The Finite Difference Time Domain (FDTD) technique is becoming increasingly popular as a means of analysing the transient and frequency responses of planar microwave and millimetre wave structures. So far, however, little attention has been given to the means

NUMERICAL MICROWAVE OF THE TLM PROCESS SYNTHESIS BY INVERSION Roberto Sorrentino., Poman P.M. So.., and Wolfgang J.R. Hoefer" ABSTRACT In this paper, the principles of a novel TLM time domain synthesis procedure for microwave structures are presented. This procedure permits the reconstruction of primary and induced sources from their radiated fields in space and time by reversing the TLM time s

A WW COST, SMALL SIZE, SECOND SOURCE COMPATIBLE SINGLE MMIC CIUP FOR DIRECf BROADCAST SATELLITE RECEPTION AT 12 GHz P.QUENTIN, P.1IIUEItE, IL CARNEZ,T. PHANPHAM, .N. BOUlANGER THOMSON COMPOSANTSMICROONDES . ABSTRACT : This paper describes the transfer design study between the ANADIGICS and TCM LN05 processes for a Direct Broadcast Satellite MMIC front end in a second source objective. It is the

Ku-BAND MMIC TRANSCEIVER FOR MOBILE SATELLITE COMMUNICATIONS Rob Gilmore, Clarence Bruckner, Doug Dunn 1 ABSTRACT A fully integrated Ku-Band transceiver utilizing state-of-the-art GaAs MMIC components has been developed for use in a commercial two-way mobile satellite communication system. The current transceiver, with over 500 discrete components requiring an area of 50 square inches, has been

THE HIGH DATA RATE TERMINAL J Haddon, C Ward* ABSTRACT The HDRT project was a part of the ESA Preparatory Support Technology Programme and was concerned with the design, build and test of a simulator of a communication link between a COLUMBUS element and a ground terminal via TDRSS. The project was completed in February 1991 with the delivery to ESA of the simulator. The primary function of th

C/Ku DUAL FRE~ENCY BAND EARTH STATION A~NNA E.M. Hemb*, M. Iida**, R. Kuzuya**, A. Abe**, T. Marumoto ABSTRACT A C/Ku dual frequency band earth station antenna adopting a waveguide type diplexing method is described. It has the design criteria as follows. 1. Extended INTELSAT's C and Ku frequency band coverage on frequency reuse operation 2. High polarization isolation and low sidelobes meetin

RADIO RELAY LINK (RRL) FOR CASSINI-HUYGENS MISSION G.LOSQUADRO ABSTRACT * Cassini-Huyghens target launch date is 1995. The combined Orbiter (Cassini) and Probe (Huygens) spacecraft is foreseen to arrive in proximity of Titan for 2004. Science and housekeeping data will be transmitted by the Probe to the Orbiter for transmission to ground via the Probe Data Relay Subsystem (PDRS) operating a

A MODEL OF THE ZENITH EXCESS ATTENUATION W Zhang 1, E T Salonen1 and S I Karhu 1 ABSTRACT DUE TO THE MELTING LAYER First, a model of melting layer of precipitation is proposed and the maximum depth of the melting layer is defined. The melting layer is assumed to be composed of spherical melting snow particles. Size distribution and average dielectric constant are used to characterize the melting