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K band Gaussian beam oscillator
K band Gaussian beam oscillator Masahiro KIYOKAWA and Toshiaki MATSUI Communications Research Laboratory, Ministry of Posts and Telecommunications 4-2-1 Nukui-Kita, Koganei, Tokyo 184, JAPAN ABSTRACf A K band Gaussian beam oscillator, with a new quasi-optical resonator, is described. The resonator consists of a plane mirror substrate and a concave spherical mirror with a highly reflective, partial
A 30-to-60-GHz Monolithic HEMT Frequency Doubler
A 30-to-60-GHz Monolithic HEMT Frequency Doubler Yoshihiro Kawasaki, Kazuo Shirakawa, Yoji Ohashi, and Tamio Saito" Fujitsu Laboratories Ltd. "Advanced Millimeter Wave Technologies Co. Ltd. 1015 Kamikodanaka, Nakahara-ku, Kawasaki Tel:+81-44-754-2647 Fax:+81-44-754-2646 211, Japan Abstract Using 0.3 µm AIGaAs/GaAs HEMT technology, we developed a 30-to-60-GHz monolithic frequency doubler which
ON THE FREQUENCY CHARACTERISTICS OF SPIN-WAVE CONVOLVER
ON THE FREQUENCY CHARACTERISTICS OF SPIN-WAVE CONVOLVER P.A. Kolodint, M.P. Kostylevt and N.G.Kovshikov St. Petersburg Electrotechnical University, 197376 St. Petersburg, Russia ABSTRACT This paper presents the results of the first investigations of the frequency characteristics of the new type of spin-wave convolver based on the resonance confluence of the backward volume spin waves. The oscilla
ANALYSIS OF ASYMMETRICAL MULTILAYER FERRITE-LOADED FIN LINES
ANALYSIS OF ASYMMETRICAL FERRITE-LOADED FIN LINES MULTILAYER Z. Fan and S.R. Pennock School of Electronic and Electrical Engineering University of Bath, Bath BA2 7AY, United Kingdom ABSTRACT The spectral domain approach is extended to analyze the nonreciprocal propagation characteristics of asymmetrical multilayer finlines containing magnetized ferrites. The effects of various multilayer confi
Nonreciprocal Ferrite Coupled Finline Components
Nonreciprocal Ferrite Jerzy Mazur, Coupled EI-Mukhtar Finline Tabun 1 Components Abstract A design procedure for novel ferrite finline components using distributed coupling effects is presented. Preliminary results, both analytical and experimental, show that this type of nonreciprocal components is atractive for millimeter wave frequencies.
PLANAR GYROTROPIC DEVICES ANALYZED BY USING A VARIATIONAL PRINCIPLE
PLANAR GYROTROPIC DEVICES ,ANALYZED BY USING A VARIATIONAL PRINCIPLE I. Huynen, B. Stockbroeckx, G. Verstraeten*, D. Vanhoenacker, A. Vander Vorst Microwaves U.c.L. Batiment Maxwell B-1348 Louvain-Ia-Neuve, Belgium Fax: +32.10.47 87 05 *ALCATEL-BELL/ Space Systems Department Berkenrodelei 33 B-2660 Hoboken, Belgium Fax: +32.3.829 55 02 ABSTRACT This paper presents results obtained with a new expl
FREQUENCY SELECTIVE TUNABLE MICROWAVE MIXERS USING MAGNETOSTATIC WAVES
FREQUENCY SELECTIVE TUNABLE MICROWAVE MIXERS USING MAGNETOSTATIC WAVES S.N.Dunaev, Y.K.Fetisov Moscow Institute of Radioengineering, Electronics and Automation. Vernadskogo 78, Moscow 117454, RUSSIA. FAX: 7 (095) 434-8665 ABSTRACT Tunable microwave mixers using magneto static spin wave (MSW) propagating in non stationary magnetised thin yttrium-iron-garnet (YIG) films have been developed and i
Field-Theory Design of Circular Waveguide Dual-Mode Filters by a Combined Mode-Matching Finite Element Method
j ( , "\ .. or > Field-Theory Design of Circular Waveguide Dual-Mode Filters by a Combined Mode-Matching Method I. Finite Element R. Beyel: and F., Arndt - Microwave Depart~ent, University of Bremen P.O. Box 330 440 Kufsteiner Str., NWl" 1;>-28359,Bremen~ Germany f..J , ~.:! " 1 Abstract ,<", I An efficient hybrid mode-matching finite element method (MMFEM) is presented for the ri
Design of Mitered H-plane Bends in Rectangular Waveguides by Combined Mode Matching and Finite Differences
Design of Mitered H-plane Bends in Rectangular Waveguides by Combined Mode Matching and Finite Differences F. Alimenti, M. Mongiardo, R. Sorrentino Istituto di Elettronica, Universita di Perugia, Perugia, Italy Ph. +39-75-5852658, Fax +39-75-5852654 e-mail: sorrent@ipguniv.unipg.it Abstract A full-wave method, which combines the efficiency of mode matching method with the versatility of finite dif
ANGLED BEND Hq0-MODE EXCITERS
ANGLED BEND Hqo.MODE EXCITERS Anatoly A.Kirilenko, Leonid A.Rud', Vladimir I.Tkachenko Institute of Radiophysics and Electronics of National Academy of Sciences of Ukraine Kharkov, 310085, Ukraine, FAX +7-0572-441105 ABSTRACT The new technique of the rectangular waveguide higher Hqo-mode (2 <= q <= 20) excitation based on unique properties of multistage angular discontinuities was found by means o