ANALGESIC EFFECTS BY MICROWAVE ACUPUNCTURE STIMULATION IN RABBITS Jian TENG, Danielle VANHOENACKER, Andre VANDER VORST* Abstract Several investigators have reported that microwaves irradiation on animals (rabbits) produces alterations in the electroencephalogram (EEG). The changes in EEG tracing, which is found in sleep or in anesthesia, were interpreted as the phenomena of inhibit ion of the hig

A. Hethod for the Development on GaA.s with by of Honol1thlcal .-Factor Integrated Resonators Increased B. Roth, J. Barkes, O.Ab8tract M. Joseph and A. Beyer, SenIor Member IEEE In this paper a type of resonator is proposed, which is usable in monolithical integrated microwave circuits on GaAs, whenever a better Q-factor is required as can be, delivered from lumped element resonant ci

InP BASED MONOLITHIC INTEGRATED THEIR MATERIAL SENSITIVITY Matthias Weiss, Geok Ing Ng and Dimitris Pavlidis HEMT AMPLIFIERS AND ABSTRACT Experimental results on InP based Ino.53+xGao.47~xAs/Ino.52Alo.48As HEMT monolithic integrated amplifiers are reported demonstrating the feasibility of this technology. Strained heteroepitaxy (x~0.0) proved to enhance the device performance and upper frequen

A HIGH GAIN MMIC BROADBAND CONSUMPTION AMPLIFIER WITH EXTREMELY LOW POWER L. Roy*, M.G. Stubbs*, I.S. Wight** ABSlRACf The design and perfonnance of a high gain, monolithic, broadband amplifier with extremely low power consumption are described. The amplifier, fabricated using a 0.5 µm GaAs depletion-mode MESFET process, utilizes very small gate width devices to achieve a measured gain of 19 d

ULTRA BROADBAND EXTENDED DYNAMIC RANGE MMIC DLVA D. ARIEL ., J.L. LACOMBE. ABSTRACT Design. fabrication and experimental results of a 2 to 18 GHz high dynamic featuring short recovery time are presented. range MMIC DLVA This fast DLVA is a Successive Detection Logarithmic Amplifier. The microwave part consists of five 2-18 GHz GaAs MMIC stages: each stage is composed of MMIC amplifiers. active p

Modelling and Realization of a Monolithic 27 GHz HEMT Amplifier in Coplanar waveguide Technology ' w. B1schof,* W. Ehr I 1nger, . * M. Berro, th ** W. ' Re1ner t ** ABSTRACT A monolithic integrated amplifier in HFET-Technology for the 27 GHz band is presented, fitted for the use in digital radio link front ends with dedicated in- and out-of-band specifications. The amplifier consists of tw

OPTIMAL DESIGN OPERA TION A Collinson, OF MONOLITHIC DISTRIBUTED AMPLIFIERS FOR POWER C M Snowden and M J Howes* ABSTRACT In this paper, new insights into the large-signal operation of distributed amplifiers are presented, using a nonlinear circuit simulation. By examining current and voltage waveforms within the amplifier it is possible to assess the interaction between the active devic

THEORETICAL AND EXPERIMENTAL ANALYSIS DIELECTRIC RESONATORS ACTIVE FILTERS OF MICROWAVE B.MADRANGEAS J. LARROQUE - - B. JARRY - P. GUILLON ** * B. THERON - D. PARISE ABSTRACT The purpose of this paper is to present theoretical and experimental results of microwave active filters using dielectric resonators (D.R.) Generally speaking, these active filters are obtained by connecting to the

MODIFIED PARALLEL-COUPLED FILTER STRUCTURE IMPROVES THE UPPER STOP-BAND PERFORMANCE Chi-Yang Chang and Tatsuo Itoh* ABS1RACf In this paper we describe a modified parallel-coupled microstrip fIlter structure. Using this new structure the filter upper stop-band performance is improved by at least 15 dB. The new structure uses less space than the traditional parallel-coupled filter structure first pr

A MULTIMODAL VARIATIONAL WAVEGUIDE DISCONTINUITIES P.Couffignal*, J-C Nanan* APPROACH FOR FOR MICROWAVE , J.W.Tao*, THE CHARACTERIZATION FILTER DESIGN H.Baudrand*, B.Theron** OF ABSTRACT A multimodal variational method for analyzing waveguide discontinuities is developed. It combines the accuracy of the theory with a fast computation, thanks to the use of the "coupled" and "uncoupled" modes no