MODIFIED COMMUTATING NETWORKS FOR MULTIPLEXING AND RECEIVING APPLICATIONS IN TRANSMIT M.J. Adams, C.S. Barham, I. L. Powell, B. K. Watson ABSTRACT The response of the simple line length diplexer can be significantly improved by the addition of two all-pass networks. Using pairs of short-circuited standard waveguides, flat equally-spaced passbands with narrow guard bands can be realised. A furth

INTERACTING STEP DISCONTINUITIES IN PLANAR DIELECTRIC WAVEGUIDES Tullio E. Rozzi ABSTRACT Planar dielectric waveguides play an important role in electro-optics. In many laser configurations and integrated optical components, grooves are etched in the planar surface or overlays are deposited on it. The step is an idealization of such a discontinuity. This paper has two aims. First, the fiel

MODELING AND APPROXIMATION FOR STATISTICAL MICROWAVEDESIGNS EVALUATION AND OPTIMIZATION OF J.W. BANDLER AND H.L. ABDEL-MALEK This paper shows how, by suitably updated approximations, one may surmount the obstacle of expensive experimental tuning or repeated computer simulations of trial designs when optimal designs or statistical analyses are required. The authors address themselves to the e

VARIOUS ASPECTS PARTIALLY APPLICATION OF COUPLED-MODE THEORY FOR ANISOTROPIC - FILLED WAVEGUIDES. TO A SEMI-CONDUCTOR LOADED WAVE-GUIDE WITH PERPENDICULAR INDUCTION. - M. HOLLINGER ~ JL. AMALRIC - H. BAUDRAND Abstract: A coupled-mode method is proposed for propagation study in anisotropic partially filled waveguides. when variables separation or plane wave spectrum methods are inoperative. Th

MICROWAVE PROPAGATION IN A WAVEGUIDE CONTAINING COMPOSITE STRUCTURE OF SEMICONDUCTOR AND FERRITE P.N. Gupta and S.K. Tolpadi ABSTRACT In this communication propagation characteristics of a waveguide filled with a composite system of semiconductor and ferrite slab have been investigated. The dispersion relation for the propagation of electromagnetic waves along the interface between a low-lo

CHARACTERISTICS OF MICROSTRIP ON ANISOTROPIC SUBSTRATES + and N.K.Uzunoglu N.G.Alexop~ulos ABSTRACT The effect of anisotropic substrates on the properties of microstrip is considered for single and coupled lines. The Green's function is obtained for the quasistatic case and it is applied to the solution of infinitesimally thin as well as thick microstrip conductors. A new numerical method is in

FAST ACCURATE HYBRID MODE COMPUTATION OF NONSYMMETRICAL LED MICROSTRIP CHARACTERISTICS R.H. Jansen COUP- ABSTRACT - A numerically efficient rigorous spectral domain solution of the wave equation is presented for covered and open nonsymmetrical coupled microstrip lines. Dispersion characteristics of the two fundamental quasi-TEM modes existing on this structure are given and found to agree excell

RF-IMPEDANCE DETERMINATION OF MM-WAVE WAVEGUIDE MIXER MOUNTS C.Hagstr6m, E.Kollberg, S.Lidholm ABSTRACT When making low noise millimeter wave mixers, knowledge of the RF-circuit is of great importance. The measurement of circuit properties is difficult due to lack of the sophisticated instruments available at lower frequencies. In this paper a method of determining the RF-impedance using

ON THE MEASUREMENT RESONANCE TECHNIQUE. (1) Paolo BERNARDI. OF MICROSTRIP DISCONTINUITY SCATTERING MATRICES BY A (2) Franco BERTOLANI and Vittorio RIZZOLI (3) Abstract. A neW simple solution to the problem of experimentally characterizing the behaviour of symmetrical microstrip discontinuities is presented To perform the measurement, a resonant cavity consisting of a couple of iden tical m

IMPROVING MICROWAVE REFLECTION MEASUREMENTS Duane E. Dunwoodie ABSTRACT * An improved measurement method for production and laboratory reflection (SWR) measurements is presented. Two methods for improving accuracy of swept data by factors of ten times are explained and typical results presented. These methods extend the range of reflection measurements to beyond 1. 006 SWR (50 dB Return Loss