Self and Mutual Impedance of Electric Dipoles in presence of a Groove-Backed Slotted Flange T. Rozzi", M. Mongiardo* 1\ * Dipartimentodi Elettronicacd Automatica,Universitadegli Studi di Ancona, Italy Dipartimentodi IngegneriaElcttronica,Universitadi Roma 'Tor Vergata',Rome, Italy Abstract This work deals with a novel and efficient method for determining self and mutual impedances of a system o

A NON STANDARD FINITE ELEMENT METHOD FOR THE DYNAMIC ANALYSIS OF MICROWAVE W AVEGUIDING AND TRANSMISSION LINE STRUCTURES Luis E. Garcia-Castillo., Magdalena Salazar-Palma. ABSTRACT A non standard Finite Element Method for the full-wave analysis of arbitrarily shaped inhomogeneous anisotropic waveguiding and transmission line structures is presented. The method employs a formulation in terms of e

ON THE TRANSFORMATION OF THE MAXWELL EQUATIONS FOR INHOMOGENEOUS AND ANISOTROPIC MEDIA INTO A NUMERICALLY STABLE EIGENPROBLEM AND ITS APPLICATIONS Bernhard ABSTRACT We show that the Maxwell equations for inhomogeneous and fully-anisotropic media can be transformed into an equivalent Eigenproblem. The method is well-suited for implementation in digital computers and allows the electromagnetic wave

INFLUENCE OF ABSORBING BOUNDARIES IN TIME DOMAIN ITERATIVE METHODS VIf Mueller, Matthias Rittweger and Adalbert Beyer* ABSTRACT This paper shows that the influence of absorbing boundaries, as typically used in time domain iterative methods like FD- TD (Finite Difference- Time Domain) or TLM, (Transmission Line Matrix) seems to be different with respect to the electrical field compared to the infl

A NON-CONTACTING WAVE APPLICATIONS WAVEGUIDE BACKSHORT FOR SUBMILLIMETER T. M. Weller, P. B. KatehP and W. R. McGrath2 ABSTRACT A novel design for non-contacting waveguide backshorts, suitable for applications into the Thz frequency range, is described in this paper. The new approach, which has been developed by the Jet Propulsion Laboratory (JPL), circumvents severe machining and mechanical

Characteristics of a millimeter wave drain mixer I. Angelov, H. Zirath, N. Rorsman, E. Kollberg Applied Electron Physics Chalmers University of Technology, Goteborg, Sweden Abstract Different drain mixer configurations, based on Heterostructure Field Effect Transistors (HFET), working at millimeter waves were studied. The mixer has a conversion gain of 6-7 dB at 40 GHz with 5 GHz RF-bandwidth. Thi

SIS JUNCTION MM WAVE RECEIVERS V Yu L V A N Vystavkin, M A Tarasov, V P Koshelets, S V Shitov, Belitsky, S A Kovtonjuk, 0 V K?plunenko, G V Prokopenko, Filippen¥, A V Shchukin, V K Kaplunenko, M I Khabipov, Turygin S Yu ABSTRACT The results of development and investigations of ultra-low-noise waveguide and quasioptical receivers of millimeter wave band region based on SIS mixers are presented.

NEW MILLIMETRE WAVE RECEIVERS AT NRAO James W. Lamb 1, John M. Payne 1 , and Nancyjane Bai1ey2 ABSTRACT A new generation of low-noise, dual-polarisation receivers covering the atmospheric windows between 65 GHz and 300 GHz is nearing completion. These receivers use niobium junction SIS mixers which have proven to be very sensitive and reliable. A modular approach has been used and each receiver c

SIMULATION SYSTEM OF A 3-D REMOTE SENSING RADAR J uha Koivula *, Martti Hallikainen * ABSTRACT Development of the simulation system of a 3-D microwave airborne radar is discussed. A complete software package was developed for the HP 8770S signal simulator environment in order to simulate the 3-D radar measurement situation, including the radar signal generation, reception and target backscatter. W

HIGH POWER T/R MODULE FOR C-BAND ACTIVE PHASED ARRAYS A. Brokmeier, ABSTRACT B. Schweizer, H.-P. Feldle* Advanced active phased arrays for ground, board, and space applications, based on a large number of radiators, are critically dependent on the availability of low cost, small size, low weight, highly reliable and reproducible T/R Modules [1]. This paper describes the architecture, real