FORWARD-WAVE NONUNIFORM MICROSTRIP COUPLERS Sener Uysal and John Watkinsl ABSTRACT Wideband, entirely planar microstrip forward wave couplers are described. The technique uses a wiggly coupler structure in which the difference between odd- and even-mode phase velocities is controlled at any desired value by the amount of wiggle depth introduced between the conductors. In this way, forward coup

The Influence of a Lossy Backmetallization Transmission Properties in CPW Ke Wu and Ruediger Vahldieck on the Abstract This paper investigates the influence of a lossy backmetallization on the transmission properties in thin- and thick-film coplanar transmission lines. The method of lines has been used together with a selfconsistent approach to include the finite metallization thickness and loss

RIGHT-ANGLE JUNCTION FOR RECTANGULAR WAVEGUIDES(*) Pierluigi CARLE (**) ABSTRACT Rigorous design method for matching right-angle E-plane bends in rectangular waveguide, based on full wave analysis of the device, is presented for the first time. This procedure allows to achieve significant improvement for corner mismatch respect to the empirical mitered solution. Moreover, this design method, utili

MEASUREMENT OF THE SURFACE RESISTANCE OF HT~ SUPERCONDUCTORS ON DIFFERENT SUBSTRATES USING AN INVERTED MICROSTRIP RESoNATOR WITH COUPLED LINES T.Kuhlemann*, J.H.Hinken** ABSTRACT We report on measurements of the average surface resistance of structured thin Y,Ba2Cu3O7-films between 0.7 and 3 GHz. The films are structured meanderline resonator. The coupling of neighboured lines is taken into con

ANALYSIS OF HIGH Tc SUPERCONDUCTING MICROSTRIP LINES* Samir M. EI-Ghazalyl, Robert B. Hammond2, Tatsuo Itoh3 and Douglas J. Scalapin04 ABSTRACT London's equations and Maxwell's equations are used to rigorously formulate the current density and the field distributions in high T c superconducting microstrip lines. The two-fluid model is utilized to calculate the losses. Results showing field distrib

A NEW BROADBAND 50 OHM COAXIAL- TO 1 OHM MICROSTRIP TRANSiTION FOR SUPERCONDUCTING THIN FILM DEVICES WITH LOW INPUT IMPEDANCE M. Daginnus *, O. Schattat * and J.H. Hinken ** ABSTRACT We report on the development of a new transition from a 50 Ohm coaxial line to a 1 Ohm microstrip line. The impedance transformation is done with a three step microstrip quarter-wave-transformer, where the width of

Nonreciprocal Field Displacement and Backward Waves in Azimuthally-Magnetised Semiconductor-Fined Coaxial Waveguide R. Sloan', L. E. Davis. and D. K. Paul. Abstract The TM0l mode in a coaxial waveguide filled with a semiconductor magnetised with a uniform azimuthal static field has been rigorously analysed using confluent hypergeometric functions. Both branches of the / diagram exhibit nonrecipr

A RIGOUROUS DISPERSIVE CHARACTERIZATION OF RADIATING MICROSTRIP DISCONTINUITIES AND JUNCTIONS J. DANSOU*, V. FOUAD HANNA*,M. DRISSI* AND J. CI1ERNE** ~ A full-wave analysis of microstrip discontinuities in an open environment using integral equations technique solved by the moment method is described. The analysis includes the effects of both longitudinal and transverse current on the strip. Rad

MULTILA YER BURIED MICROSTRIP INSET GUIDE. . .* . . .* T . ROZZI.* , G . G enm, A . M onm, M . D e SantIS * ABSTRACf Microstrip Inset Guide [M.I.G.] offers interesting possibilities as either antenna feed or / and millimetric transmission media for the purpose of source integration. The use of multiple dielectric layers and the positioning of the strip at any interface provides additional cont

FULL-WAVE ANALYSIS OF SUPERCONDUCTING COPLANAR WAVEGUIDE WITH FINITE CONDUCTOR THICKNESS Wolfgang Heinrich. ABSTRACT A full-wave analysis of superconducting planar transmission lines is presented. The approach holds for arbitrary values of conductor thickness and does not rely on approximations such as the skin-effect description or the resistive boundary condition. The paper gives results on C