FULL-WAVE INVESTIGATION OF LEAKAGE FROM A COVERED MICRO STRIP LINE WITH FINITE STRIP CONDUCTIVI1Y AND THICKNESS Ching-Kuang C. Tzuang, ABSTRACT A network representation of full-wave mode-matching method employing the metal modes is applied to the investigation of the leaky wave from a covered microstrip line with finite metalized strip conductivity and thickness. The theoretical results are in goo

ANALYSIS OF SYMMETRIC AND ASYMMETRIC COUPLED SUSPENDED STRIPLINES AND SOME ASSOCIATED DISCONTINUITIES J ACHKAR*, 0 PICON*, V FOUAD HANNA*, J CITERNE** ABSTRACT The dominant and higher order modes in both symmetric and asymmetric coupled suspended striplines are precisely described from a thorough Spectral-Domain Approach (SDA). It is shown that complex modes can exist in asymmetric suspended str

INCORPORATION OF STATIC SINGULARITIES INTO THE FINITE DOMAIN TECHNIQUE VITH APPLICATION TO MICROSTRIP STRUCTURES DIFFERENCE TIME D.B.Shorthousel, C.J.Railtonl ABSTRACT This contribution demonstrates how the accuracy and speed of FDTD analysis may be improved for the modelling of MMIC structures. Correction factors, obtained from the known behavior of static fields close to discontinuitie

COMPUTER AIDED ANALYSIS AND DESIGN OF MULTIPLE NONUNIFORML COUPLED MICROSTRIPS AND OTHER TRANSMISSION LINES Y L.A. Hayden*, V.K. Tripathi** ABSTRACT Analysis and design techniques for nonuniform coupled line multiport networks are formulated. Techniques presented include the use of an enhanced piece-wise uniform stepped impedance model for general nonuniformly coupled line structures and a s

5-40 GHz S-Parameter for Accurate Design Yoji Ohashil, and Keisuke Measurements at 20 K of Low-Noise Cryogenic HEMT Amplifiers Hiroshi Kuriharal, Tamio Saitol, Miyazawa2 Abstract This paper discusses S-parameter measurements of the Fujitsu FHRlOX HEMT at 20 K and up to 40 GHz under varied bias conditions. To the best of our knowledge, this is the first report of such measurements in the millime

SIMPLE AND ACCURATE MEASUREMENT OF MICROWAVE OSCILLATORS USING THERMAL M. Fuchs * ABSTRACT LOADED Q FACTOR NOISE INJECTION OF A new measurement method to determine the loaded Q factor of microwave oscillators is described. Thermal noise power is injected into the test oscillator and single sideband phase noise is measured simultaneously. The resulting phase noise plot contains all information w

A NEW METHOD OF MEASUREMENTS OF ALL COMPLEX PERMEABILITY COMPONENTS OF MICROWAVE FERRITES USING ONE CYLINDRICAL SAMPLE TENSOR FERRITE J Krupka ABSTRACT * A new method of measurements of all complex permeability tensor components of microwave ferrites, using one cylindrical ferrite sample is presented. Two dielectric ring resonators having the same heights and internal diameters but different e

DIELECTRIC RESONATOR METHOD FOR NONDESTRUCTIVE MEASUREMENT OF COMPLEX PERMITTIVITY OF MICROWAVE DIELECTRIC SUBSTRATES Toshio Nishikawa. Kikuo and Youhei Ishikawa* ABSTRACT A new technique for the measurement of the complex permittivity of dielectric substrates was developed. This method is a non-contact measurement using two dielectric resonators which support the TEol6 mode. The complex permittiv

rt MICROWAVE SYSTEM FOR HIGH ACCURACY HIGH SPATIAL RESOLUTION DIELECTRIC CONSTANT UNIFORMITY MEASUREMENT H. B. Bhimnathwala*, M. S. Wang*, S. Bothra**, K. W. Kristal***, and J. M. Borrego* ABSTRACT This paper presents a microwave system using an aperture in a microstrip resonant probe capable of measuring dielectric constant uniformity with high accuracy and high degree of spatial resolution. Th

PREDICTING COMPLEX WAVES IN LOSSLESS GUIDES Michal Mrozowskil, Jerzy Mazurl ~ This contribution presents recent developments of a new theory of complex waves in inhomogeneous lossless dielectric guides [1]. Based on this theory, simple formulae are derived which allow one to predict inhomogeneous derived results the presence and the frequency band of complex waves in slightly of complex waves