TECHNOLOGICAL TRENDS IN GAAS MESFET'S FOR MM-WAVE APPLICATIONS M~ BUJATTI* ABSTRACT The most recent developments ed to the progress of other fast terest for mm-wave applications. performance by extrapolating the in GaAs MESFET's are reviewed and comparthree-terminal devices potentially of inAn attempt is made at predicting future present trends. 

COMPUTER-AIDED CIRCUITS DESIGN OF HYBRID AND MONOLITHIC MICROWAVE INTEGRATED - STATE OF THE ART, PROBLEMS AND TRENDS Rolf H. Jansen * ABSTRACT A survey is given describing the status of computer-aided design techniques as they are used today in the development of microwave integrated circuits. Some still existing deficiencies and fundamental problems are outlined. Parallel to this, the



MICROWAVE SYSTEMS FOR FIXED AND MOBILE SERVICES H. Rupp + ABSTRACT Microwave radio relay systems now in operation are mainly analog FM systems. The state of the art for these systems is recalled. During the last years microwave radio relay systems are rapidly moving towards digital transmission. Principles of these systems together with the main problems to be solved are presented. Of special im

GaAs-A1GaAs EPITAXIAL GROWTH FOR MICROWAVE APPLICATIONS NUYEN T. LINH - THOMSON-CSF Central Research Laboratory Domaineue Corbeville - 91401 - ORSAY (FRANCE) Abstract Heterojunctions which have been used for years in optoelectronic devices, are now entering in microwave applications. The heterojunction bipolar transistor, proposed since 1957 in not matured in its technology. The new born select

GaAs MMIC'S RESEARCH STATUS IN THE U.S.A. D. R. CHIEN ABSTRACT A synopsis of the current research status of GaAs MMICsin the U.S. is presented. R&D efforts are highlighted with selected results from the major microwave areas. 

GERMAN PARTICIPATION IN EUROPEAN COMMUNICATIONS SATELLITES DEVELOPMENT J.-D. BOchs* ABSTRACT After a short review of the evolution of satellite communications in the Federal Republic of Germany the European Communications Satellite ECS and the German/French broadcasting satellites TV-SAT D3/TDF-1 F3 are presented in order to illustrate the German participation in European communications



FAULT-LOCATION IN MICROWAVE-FEEDERS REFLECTION WITH DIRECT FACTOR RF-CALIBRATION OF W. Bolinge~ B. Eicher Abstract A powerful domain and easy to use microwave is presented carrier pulse modulated fault time location reflectometer which allows precise measurements on feeders ... for microwave links over a large frequency range (1,5 tion 18 GHz). The use of direct reading variabl

ADAPTIVE BASEBAND EQUALIZER FOR INTERMODULATION REDUCTION IN MICROWAVE FM SYSTEMS NOISE A. Baranyi, G. Szarka, T. Mesterhazy, L. Zakarias, T. Sarkany ABSTRACT Baseband distortion equalization is a new method for equalizing residual intermodulation distortion in microwave links, thereby easing maintenance requirements and improving transmission quality. In this paper, the concept of the adap