COMPLEX WAVES IN LOSSLESS Jerzy Mazur* DIELECTRIC WAVEGUIDES Michal Mrozowski, ABSTRACT The rebuttal of the existing theory of complex waves is given and new approach is proposed. Unlike the existing one, the new theory, basing on the investigation of the properties generalized symmetric eigenvalue problem, is mathematically sound, provides a number of useful orthogonality relations and allow

SOME FUNDAMENTAL PLASMA CIRCULAR V.I. Miteva and PROPERTIES OF AZIMUTHALLY MAGNETIZED SOLID- GUIDE K.P. Ivanov* ABSTRACT The mode theory of a circular guide containing azimuthally magnetized solid-plasma is considered, emphasizing the nonreciprocal properties of rotationally symmetric TM modes. Based on the anisotropic effects of phase shifting and cutoff, experienced by the TM01 propagating

A SINGLE IRIS 8-POLE DUAL MODE DTRLECTRIC RESONATOR FILTER Seng-Woon Chen*, Kawthar A. Zaki*, Ali E. Atia** ABSTRACT A dual mode 8-pole dielectric resonator filter with a single iris is described. The iris is used to couple the two symmetrical halves of the filter (requiring very small coupling) to reduce its length. Measured results on an experimental filter showed excellent agreemen

Planar SlotUne with Hillimeterwave-Resonators Voplanar VoupUng by Bernd Roth and Adalbert Beyer Abstract: resonators First, the numerically impedance parallel This paper adresses a new way for optimizing integrated high Q slotline for millimeterwave applications. The procedure is carried out in two steps. problem of coupling of the incident wave into the resonator is solved with the help of ort

NONRECIPROCAL FERRITE DISTRIBUTED STRUCTURES USING COUPLED LINES WITH VERTICAL Michal Mrozowski, MAGNETIZATION Jerzy Mazur, Michal Okoniewski* ABSTRACT New configurations of nonreciprocal devices with vertical magnetization are investigated. The structures proposed base on a new distributed phenomenon consisting in the nonreciprocal response to the even or odd mode excitation of the identi

MIC REALIZATION OF DIELECTRIC Adam Abl'amo,..;icz RESONATOR ELLIPTIC FILTERS * ABSTRACT configurations of dielectric resonator elliptic on MIC are proposed. A detailed procedure bandpass and bandstop filters is presented. of filters are constructed to demonstrate the New for Two trial principle. filters desining samples bot.h 

CHANNELIZED G.E. Ponchak* COPLANAR WAVEGUIDE PIN-DIODE and R.N. Simons** SWITCHES ABSTRACT Three different types of p-i-n diode, reflective CPW switches are presented. The first two switches are the series and the shunt mounted diode switches. Each has achieved greater than 15 dB of isolation over a broad bandwidth. The third switch is a narrow band, high isolation filter which has achieved 19

A New Advanced MM-Wave Test Facility for EM Field Measuring of Large Antenna Systems up to 2006Hz H.-J. Steiner,* N. Kaempfer ** ABSTRACT The measurement of the characteri stic antenna data by means of conven. tional far-field test ranges in frequencies around 200GHz requires measurement distances of up to some kilometers. The high atmospherical attenuation and the low available transmit power

MODAL ------ MODELLING OF MILLIMETRE/SUBMILLIMETRE WAVELENGTH FILTERS -...---..---- T.E. 0 Ciardha*, W.M. Kelly**, B.N. Lyons*** ABSTRACT In this paper, modal models for DCP and FPI filters are described. Their accuracy at millimetre and submillimetre wavelengths is demonstrated. The limitations of a simpler FPI model are explained. 

BROADBAND WAVEGUIDE MIXER DESIGN FOR SUBMILLIMETER-WAVELENGTHS Nigel Keen' ABSTRACT Submillimeter-wavelength receivers for radio astronomy require bandwidths in excess of 1 GHz for numerous observations. Following first experiences at 345 and 460 GHz. it became necessary to investigate the factors limiting mixerand system-bandwidth in waveguide mixers with coaxial chokes. The most significan