TIIEORETICAL AND EXPERIMENTAL INVESTIGATION OF SOME DIFFERENT RESONATORS IN SUSPENDED STRIPLINE TECHNOLOGY J Achkar" 0 Picon", V Fouad Hanna", J Citerne'" ABSTRACf Simple and complex suspended stripline discontinuities are precisely characterized using the modal analysis combined with the spectral domain approach. Using the results of this study, different resonators are conceived and realized m t

WIDEBAND POWER COMBINERS FOR GaAs MMICs M. Healy, B.J. Minnis and L.M. Devlint ABSTRACf Novel, broadband, multi-way impedance transforming power dividers and combiners, suitable for GaAs monolithic microwave integrated circuit (MMIC) fabrication, are described. The combiners operate over bandwidths in excess of an octave and can provide large impedance level transformations. They are especially

HIGH-EFFICIENCY, SINGLE-RIDGED, 16-WAY RADIAL POWER COMBINER M. Oz, B. D. Geller, P. K. Cline, and I. Yogev* ABSTRACT A new single-ridged, 16-way, high-efficiency radial power combiner for C-band has been developed. The design uses ridged waveguide theory to calculate bandwidth and impedance, as well as a new endlaunch waveguide-to-coaxial transition. This power combiner has an average insertion

Measurement and Analysis of Coplanar 1MIC Spiral Transformers Four-Port Johannes Borlces,Mohsen Naghed and Ingo Wolff * ABSTRAaI' Coplanar spiral transformers of small dimensions and broadband characteristics are designed and fabricated on Gallium Arsenide substrate. Their propertis are investigated. using an accurate circuit model. The equivalent circuit parameters are calculated using a th

A NEW APPROACH OF THE SOURCE METHOD FOR CHARACTERIZATION OF PLANAR STRUCTURES s. PUJOL*, H. BAUDRAND*, V. FOUAD HANNA**, X. DONG* ABSTRACT: An analysis of planar circuits using the source method is presented. The definition of the input impedance seen from the source shows the arbitrary nature of the current source. An homographical relation, which relates the computed values to the true valu

STUDY OF A COPLANAR WAVEGUIDE ON MAGNETIC ANISOTROPIC SUBSTRATE G. MAZE* , S. TEDJINI** , J.-L. BONNEFOY* A * CEA-CEST BP W2, 33 114 Le Barp, FRANCE ** LEMO-CNRSURA 833, BP N° 257, 38016 GrenobleCedex,FRANCE ABSTRACT In this paper an extension of the Spectral Domain Technique is suggested in order to analyse planar structures on anisotropic substrates with biaxial dielectric and/or magnetic aniso

Fullwave Analysis of Open-End Discontinuties In Coplanar Stripline and Finite Ground Plane Coplanar Waveguide in Open Environments Using a Deterministic Spectral Domain Approach J. S. McLean*, A. D. Wieck*, K. Ploog* , and T. Itoh** Abstract Open-end discontinuities in coplanar stripline (CPS) and finite ground plane coplanar waveguide (CPW) are analyzed for the first time using a deterministic sp

COPLANAR SHORT CONSIDERED CAL CONDENSED NODES BY THE TLM-METHOD WITH SYMMETRI- U. Mueller, M. Rittweger, and A. Beyer ABSTRACT This paper presents numerical results on transmission behavior and field distribution of a coplanar discontinuity obtained by the help of the TLM-method. The applicability of this field theoretical technique to practical structures is shown on the example of an 50 copl

FULL-WAVE ANALYSIS OF A MODIFIED COPLANAR AIR BRIDGE T-JUNCTION M. Rittweg~r, N. H. L. Koster, S. KoBlowski, R. Bertenburg, S. Heinen, and I. Wolff ABSTRACT A special type of a coplanar T-junction is investigated and compared with the conventional one. Both, measurements and simulated results based on the three-dimensional finite difference time-domain (FDTD) method are used to point out the adv

THE EVALUATION OF EARTH-SPACE PATH ATTENUATION IN POLAND PREDICTIONS A Kawecki* ABSTRACT The wave attenuation characteristics of 11.5 GHz Earth-space path were investigated in the years 1987-90 in complex measuring system. The attenuation due to rain prediction models have been tested and most adequate for central Poland have been selected.