ON THE DEPENDENCE OF RADIATION SUBSTRATE PARAMETERS S P Smith FROM MICROSTRIP CIRCUITS UPON *, S H Al-Charchafchi ** ABSTRACT Radiation coupling effects in microstrip circuits usually arise when two separate circuits are adjacently mounted. Such spurious coupling is caused by radiation from discontinuities in one circuit illuminating the other. Such coupling presents a serious problem to the

RIGOROUS FIELD THEORY DESIGN OF COMPACT AND LIGHTWEIGHT BROADBAND DIPLEXERS FOR SATELLITE COMMUNICATION SYSTEMS F.Arndt, D. Fasold, J. Dittloff, N. Nathrath, U. Papziner, * and H. Wolf ** ABSTRACT A new design of compact, lightweight, broad-band and low-insertion-loss diplexers for satellite conununication systems is introduced utilizing E- plane corrugated and below- cutoff waveguide

MICROSTRIP END-COUPLED FILTER DESIGN AT mm- WAVE FREQUENCIES P.A.Blenkinsop, J.H.Palmer . G.J.Cunningham, ABSTRACT This paper outlines a novel procedure for the design of end-coupled microstrip bandpass filters at near mm-wave frequencies. It presents results obtained for a fabricated 28.76GHz filter which yielded an insertion loss of 2.3dB in the passband and 30dB rejection at 4% below the cen

MEASUREMENT SETUP TO EVALUATE BER PERFORMANCE, GROUP DELAY DISPERSIONS ON DIGITAL RADIO LINKS D. Di Zenobio *, E. Russo* M. Bergamini**, S. Candeo** ABSTRACT AMPLITUDE AND Digital radio-relay systems are particularly affected by the frequency selective nature of multipath fading. To know the effects of propagation on radio-relay systems, an experimental measurement setup was realized to charact

AUTOMATED NOISE AND GAIN ftEASUREftENT SET-UP AND APPLICATION TO NOISE MODELLING Bernard BYZERY Abstract: For a circuit designer, the determination of the small signal equivalent circuit and the noise parameters of the FETs are the most important. The compari son of different devices and the qualificati on of noise models require a precise determination of the noise parameters. The aim of this pa

ANAL YTICAL TRANSFER THEIR APPLICATIONS V F Fusco, P A Linden FUNCTIONS FOR ACTIVE MICROWAVE DEVICES AND Abstract This paper demonstrates how directed graph techniques can be used to form analytic transfer functions representing the two-port scattering parameter matrix describing active microwave device equivalent circuit models. The implementation of the resulting transfer functions in a robus

A SIMPLE AND ACCURATE MODEL FOR A DIELECTRIC RESONATOR SYMMETRICALLY COUPLED WITH TWO MICROSTRIPS a. BIANCHI, ABSTRACT A model for the simulation of the four port network consisting of a dielectric resonator symmetrically coupled with two micros trips is presented. The derivation of the equivalent structure starts from (and generalizes) the results obtained for a dielectric resonator coupled with

ACCURATE IN'I'EIH)DULATION SIMULATION OF AMPLIFIERS WITH A GENERALIZED FOURIER TRANSFORM Zhang Xiang-dong*, Hong Xing-nan*, Gao Bao-xin* ABSTRACT A new generalized FOURIER transform method, which is both accurate and fast for analysing almost periodic steady-state responses of microwave nonlinear circuits, is used to simulated the 3rd-order intermodulation of a GaAs MESFET amplifier. The simu

A NEV SOF'NARB PACKAGE FOR THE ANALYSIS AND OPTIMIZATION OF LINEARIZED HICROVAVE POVER AMPLIFIERS. E. Ballesteros. ABSTRACT and F. Perez.. This paper describes a new software package developed to analyze and design linearizer systems. Linear and nonlinear devices are characterized by means of their transfer function and descriptive function respectively, while the match is supposed to be ideal

AN ANALYSIS Masami Akaike* OF IDLER-FEEDBACK M/N ANALOG FREQUENCY DIVIDERS ABSTRACT An analysis of M/N analog frequency dividers, where M and N are arbitrary positive integers, is presented. These frequency dividers utilize parametric and amplification effects of an FET. The frequency division is realized by feeding back the output signal and idlers to the input ports with proper phases. Prope