BANDPASS FILTERS WITH CONTROLLED OF COUPLED PAIRS OF MICROSTRIP LOCATION OF ATTENUATION POLES LINES Hans-Georg ABSTRACT Bergandt * A way is presented to realize attenuation poles in microstrip bandbass filters of symmetrical pairs of coupled lines. The pole locations can be controlled by the parameters of additional single microstrip lines or other impedances. Different types of coupled pair

Xulticoupled line filters with additional transmission zeros u. Bochtler*, F. Landstorfer* Abstract Whereas usual design procedures of multi-line-systems are restricted to arrangements where only the coupling between adjacent conductors is considered, the paper introduces a catalogue which enables the construction of a three-line multicoupled filter which disposes of an additional transmission

HIGH PERFORMANCE MICROSTRIP BANDPASS NONSYMMETRICAL PARALLEL COUPLED LINES M. J. Rosario*, J. Costa Freire*, and R. Sorrentino+ ABSTRACT FILTERS WITH A new improved technique for the design of bandpass microstrip filters based on the image parameter concept is presented. Realizability is guaranteed by manufacturing constraints being incorporated into the design procedure. Passband limitations a

EXTENDED DESIGN POSSIBILITIES FOR SIDE-WALL ARRANGED MULTI-MODE CAVITY FILTERS Uwe Rosenberg, ABSTRACT A new TE side-wall intercavity coupling is introduced. This method is shown to provide a significant extension in the design of side-wall arranged multi-mode cavity filters. All design principles developed for top-wall cascaded filter configurations /1.. 7/ can now be adapted to this class of fil

A METHOD G Reiter ABSTRACT TO DESIGN MICROSTRIP DIRECTIONAL FILTERS A new design method of microstrip direqtional filter is reported, utilizing its symmetry properties. In the proposed method the design of directional filter is reduced to the design of a filter arrangement comprising coupled openended /8 transmission line sections and uncoupled /4 line sections. 

FULLW AVB ANALYSIS TIlREE-DIMENSIONAL FOR S-PARAMETER LOSSY STRUcruRES CALCULATION OF ARBITRARY Detlev Hollmann*, Steffen Haffa**, Werner Wiesbeck ** ABSTRACf A three dimensional complex finite difference method treatment of transmission line discontinuity problems is presented. The generalized scattering parameters can be computed for any arbitrary one port or two port structure. Dielectric

AMAZING EFFECT OF SERPENTINE-SHAPED BRANCH TAPER IN DESIGNING PLANAR DIELECTRIC WAVEGUIDE CIRCUITS Mikio Tsuji and Hiroshi Shigesawa ABSTRACT A new method is proposed for designing planar dielectric-waveguide branch circuits with a high performance. This method intentionally generates the radiation wave locally on a circuit, and well controls its behavior to have desired power conversion

SPECTRAL WITH ANALYSIS ACTIVE OF AND MULTIPORT PASSIVE MICROSTRIP LUMPED CIRCUITS ELEMENTS A. J anhsen * and V. Hansen * ABSTRACT A method for the investigation of planar microstrip circuits embedded in layered media is presented. The circuit consisting of active and passive lumped elements is fed by an arbitrary number of microstrip lines. The current on the metallic structure is descri

ON THE DESIGN OF OPTIMIZED MICROSTRIP RADIAL LINE POWER DMDERS G.Bartolucci, F.Giannini, C.Paoloni ABSTRACT The planar realization of beam forming networks for active antenna systems in satellite communication requires small and high performance power splitters. The microstrip radial line power divider seems to be a suitable structure for this purpose, because, under certain hypothesis, insures a

COMPUTER AIDED DESIGN OF NON-SYMMETRIC SIX-PORT BRANCH- WAVEGUIDE J.M. DIRECTIONAL COUPLERS. C. Blanco Rebollar, J. Esteban, A1!~IRA~1 The Generalized Scattering Matrix of the Generalized 2-port discontinuity concept has been employed to develope a CAD package of non-symmetric six-port branch-waveguide couplers. The developed CAD has been succesfully of HISPASAT's Power Divider Network