THE DEVELOPMENT MICROWAVE OF AN ATE SYSTEM FOR 'ON-WAFER' MMICs EVALUATION OF THE AND D.C. CHARACTERISTICS OF GaAs B.J. Buck:I.G. Eddison,+ and M.J. Williams* ABSTRACT An automatic test equipment (ATE) is described which is capable of the 'on-wafer' d.c. and microwave characterisation of GaAs monolithic microwave integrated circuits (MMICs). The ATE hardware implementation and the a

AN AUTOMATIC MIXER TEST SET W. R. Sean Hogan ABSTRACT A fast automatic mixer test set with a flexible user interface has been built. Special hardware adaptation allows swept data to be taken and processed at high speed for accurate measurement of conversion loss, isolation, and VSWR for mixers from 10 Mhz to 18 Ghz. Flexible software provides the user with unusual freedom to use the hardwa

A NOVEL WAVEGUIDE TRANSISTOR NOISE MEASUREMENT SYSTEM H. Ebner and J. Opfer ABSTRACT An accurate, applications transistor semi-automatic is presented. noise equivalent transistor noise measurement scheme for mm-wave The method is based on the determination of the circuit parameters by regression techniques. 

AN AUTOMATIC OF MICROWAVE SYSTEM FOR MEASURING THE RESONANT FREQUENCY AND THE Q FACTOR RESONATORS A.Milewski,Z.Nowakowski,A.Pawlowski Abstract--The paper is a report on an application of the static point-bypoint technique of collecting experimental data from a resonance curve to the determination of the resonance frequency and the Q factor of a microwave resonator.A minicomputer system for

GENERALIZED STRUCTURES A.S. Omar, REPRESENTATION OF GREEN'S FUNCTIONS IN MULTI-LAYER PLANAR K. Schunemann ABSTRACT A generalized representation of Green's functions structures is derived and applied to fin-lines. in multi-layer planar 

MULTI CONDUCTOR LUMPED ELEMENTS HYBRID-MODE INCLUDING APPROACH LOSS, FOR THE DESIGN OF MIC COUPLERS AND DISPERSION AND PARASITICS Rolf H. Jansen and Ludger Wiemer ABSTRACT - A hybrid-mode approach for the analysis and design of MIC (Microwave Integrated Circuit) interdigital couplers and lumped elements consisting of multistrip configurations is described. At high operating frequencies

RIGOROUS MODELLING OF SINGLE AND COUPLED RECTANGULAR WAVEGUIDE BY TRANSVERSE RESONANCE DIFFRACTION DIELE, J. Kot and T. E. Rozzi'" ABSTRACT Classical transverse resonance is not applicable to non-separable geometries open boundaries. Discretising by enclosure within ideal metallic walls alters essentially the boundary conditions for radiation. A new and rigorous technique called transverse re

ANALYSIS AND CHARACTERIZATION OF SOME COMMON TRANSITIONS AND INTERCONNECTIONS S.J. USING THREE-DIMENSIONAL Nightingale* and M.A.G. MODELLING TECHNIQUES Upton* Abstract This paper will present the analysis and characterization of several different transitions and interconnections which are in common use, but have not to date been investigated by other workers in this field. These were analyz

THIRD ORDER INTERMJDULATION DISTORSION IN MICROWAVEVARIABLE GAIN AMPLIFIER N. E. RADHY, E .ALLAMANDO and G. SALMER Centre hyperfrequences et SemiconducteursLA au CNRS n0287 Universite de Lille I - France - 59655 VILLENEUVE D'ASCQ ABSTRACT This paper presents a study of the third-order intermodulation (IMD) products of dual-gate MESFETamplifier as a function of structure parameters and bias volta

RECENT DEVELOPMENTS IN RF OVERLOAD MECHANISMS, BURNOUT AND RELIABILITY OF LOW NOISE H.J. Finlay*, GaAs FET AMPLIFIERS B.D. Roberts*, R.F.B. Conlon*, D. Standing+ ABSTRACT GaAs FET amplifiers are frequently subjected to RF overload in radar and communication systems. To satisfy reliability requirements, a comprehensive study of RF overload mechanisms is described which relates to catastrophic