A WAVEGUIDE-TO-MICROSTRIP TRANSITION Jerzy K. Piotrowski and Wojciech Wojtasiak ABSTRACT The design and performance of a waveguide-to-microstrip transition is presented. The optimum bilateral finline taper has been used to match the fundamental mode waveguide characteristic impedance to a 50-ohm microstrip mounted on a low dielectric substrate. The transverse resonance method has been appl

A NEW ILErnOD FOR THE WIDEBAND ANALYSIS OF PLA..~AR CIRCUITS P..Arcioni, M. Bressan. G. Conciauro (+) ABSTRACT A new algorithm Jor the wideband analysis 01 the two-dimensional model of a pla.nar microwave circuit is described briefly. The algorithm slw..res the advantages of the "contour integral metlwd" nnd of the methods based on eigenfunction expa'T'.sions, without suJJering of the'lT dr

AN ANALYTICAL INVESTIGATION OF CONTAINING A MAGNETIZED FERRITE A FIN-LINE STRUCTURE SLAB SMALLER THAN THE WAVEGUIDE by D.Guan. R.Hoffmann* Abstract : This paper presents an hybrid mode field analysis of a fin-line structure containing a magnetized of the waveguide. Using this ferrite slab smaller than the height theory the dispersion and field distribution with the good the propert

ANALYSIS OF MICROSLAB WAVEGUIDE Brian Young and Tatsuo Itoh* ABSTRACT A rigorous mode matching analysis is applied to find the propagation characteristics of the microslab waveguide. An effective dielectric constant approach using the spectral domain method is used to support the results. oscillator~ The results agree well with experimental data for a ring 

GENERALIZED SPECTRAL DOMAIN TECHNIQUE THEORY AND APPLICATIONS S. TEDJINI* . D. RAULY* . P. SAGUET* ABSTRACT A new formulation of the Spectral Domain Technique (SDT) is presented. namely. the Generalized Spectral Domain Technique (GSDT). This formulation can be applied to all planar circuits. open or closed. strip-like or slot-like. including an arbitrary number of isotropic layers. Recurren

Design Consideration of Coupled Slow-Wave Microstrip-Line Circuits 'R. Ogawa* and T. Itoh* ABSTRACT The constant microstrip line impedance type-C is proposed and section made of a coupled slow-wave its characteristics discussed. In directional coupler is proposed and addition. the slow-wave microstrip line several design equations are derived. 

FINITE ELEMENT ANALYSIS OF SLOW WAVE COPLANAR WAVEGUIDE WITH LOCALIZED DEPLETION REGIONS C-K C. Tzuang and T. Itoh* ABSTRACT A finite element field analysis program is developed to study the effect of localized finite conductivity region in the Schottky-contact CPW in the slow-wave application. Theoretical results obtained for the MIS (layered) CPW structure show good agreements with those in th

J. P. Starski* ABSTRACT A C band attenuator phase shifter unit has been designed. The unit has an range of 0-40 dB and can control the phase in 450steps between 0-360°. The bandwidth is approximatly 18% with a center frequency of 5.5 GHz. The unit consists of an attenuator and 3 bit PIN diode phase shifter. The attenuator is of the absorptive type and uses phase optimized PIN diode modules. The u

PROGRESS ON FINLINE NON RECIPROCAL PHASE-SHIFTERS S. TEDJINI* P. SAGUET* D. RAULY* ABSTRACT The aim of this communication is to propose a non reciprocal phase-shifter in fin-line technology and its theoretical analysis. The proposed device is based on semiconductor submitted to a magnetostatic field which leads to a gyroelectric material and then to a differential phase-shifter. 

SIX-PORT BRANCH-WAVEGUIDE DIRECTIONAL COUPLERS E. KUhn+, H. Schmledel+, R. Waugh++ ABSTRACT A new coupler configuration is presented which comprises three rectangular waveguides connected to each other by two identical arrays of branch guides. This component Is primarily designated for use In the beam-forming networks of multiple or contoured beam satellite antennas and offers the potentiaL t