NOVEL MICROWAVE TECHNIQUE FOR INDUSTRIAL MEASUREMENTS Wolfram Schilz ABSTRACT: Based on traditional microwave techniques a new branch is rapidly growing: The application of microwaves for industrial measurements and process control. In many cases microwaves are superior to other methods because of the specific microwave behaviour of materials and the possibility of contact-free, remote probing.



COMPACT LOW LOSS L-BAND DIPLEXER FOR SPACE APPLICATIONS E. Andersen, ABSTRACT M. Mathiesen, J. Wested For application in satellite multibeam arrays, a compact low loss diplexer has been developed.' Branch filters using temperature compensated cylindrical dielectric resonators mounted in a circular cut-off waveguide give a mechanically simple and robust construction with excellent on boar

AN 18 CHANNEL, PHASE-MATCHED, SINGLE-CONVERSION UPCONVERTER FROM 30MHzTO Author: A.A. Goaaher L-BAND ABSTRACT An 18 channel, phase-matched Upconverter has been developed Space and Defence Systems Ltd. The Upconverter translates separate IF signals from 30MHz to L-Band while maintaining phase and amplitude relationships. by the Marconi 18 the channel To ease phase tracking problems a sub-harmoni

L-BAND GaAs FET AMPLIFIER L. NEVIN* I. AND R. WONG* ABSTRACT Low noise GaAs FET amplifier performance is enhanced at 1-2 GHz frequencies through the use of source inductance feedback. A simple circuit model predicts noise and signal performance and is used to derive matching circuits for the amplifier design. A 1-2 GHz single stage amplifier, designed on the basis of the modeled results, demon

BIPOLAR AND F.E.T. COMMUNITY POWER AMPLIFIER FOR A 2.6 GHz TELEVISION TRANSPONDER Authors: J.A. Vaughan, F.G. Sawyer and M.J. WiZZiams. ABSTRACT This paper describes the'design of 2.6 GHz, high gain, high power transistor amplifiers for use in a satellite transponder for a community television and radio broadcast service. Two power amplifiers are described: internally matched * A Class

ACTIVE X-BAND PHASED ARRAY MODULES AND THEIR PHASE STABILITY H. Steyskal Sr. ABSTRACT MIC-transmit-receive units wlih 1 W CW output each were. formodule.. Ga.As IMPATT diode power amplifiers and ferrite. phase. shifters were. used This type. of components produced phase tracking of about 0.8 phase degrees/°C in CW operation, thereby setting limits for uncontrolled temperature differences in lar

A HIGH-CAPACITY SATELLITE UTILIZING FIXED AND SCANNING SPOT ANTENNA BEAMS D. O. Reudink and Y. S. Yeh* ABSTRACT We discuss one possible implementation of a satellite which has the advantage of providing high EIRP, high capacity and universal service. The approach employs Satellite Switched Time Division Multiple Access (TDMA) where one of the spotbeams is a scanning beam. The transponder for t

AN ACCURATE CIRCUITS BROADBAND DESKTOP COMPUTER MODELING FOR RADIAL MICROWAVE A.C. DERYCKE . ~ , L. DUPONT, M. Del GUIDICE ~~ and G. SALMER . ABSTRACT An efficient and accurate desktop computer model for radial integrated microwave circuits is presented. This model uses the near field approximation encountered in the antenna theory by considering the particular mode spectrum of the

ANALYSIS FREQUENCY. OF SOME THREE-DIMENSIONAL MICROSTRIP DISCONTINUITIES IN TERMS OF By A. ROS, T. JARKAS and D. POMPEI Abstract: In the earty seventies, JOHNS introduced the Transmission Line Matrix (T.L.M.) Method. More recently AKHTARZAD applied this technics to some resonant cavities problems. Using this method, we have studied microstrip discontinuities such as the transition between