MICROWAVE AND HIGH FREQUENCY APPLICATIONS OF POLYCONDUCTORS M. A. K. Hamidt and M. H. Rahmani" ABSTRACT - Several applications of V02 polyconductors at microwave frequencies are suggested for monitoring microwave power, switching, detection, protection, noise generations or steady-state oscillation. For these applications the basic microwave properties of V02 devices or, film are measured to

HIGH EFFICIENCY X-BAND TRAPATT AMPLIFIERS AND OSCILLATORS C.H. Oxley, A.M. Howard, S.M.R. Gordon and J.J. Purcell ABSTRACT Silicon p+nn+ TRAPATT diodes have given X-band amplification with added power efficiencies of up to 25% and fundamental X-band oscillation with efficiencies as high as 35%. The diodes are fabricated by an Integral Heat Sink (IHS) technology and the p+n junction is

AMPLITUDE AND PHASE CHARACTERISTICS OF MICROWAVE SOLID STATE AMPLIFIERS FOR PHASED ARRAY ANTENNA SERVICE. Donald W. Griffin ABSTRACT The amplitude and phase of the fundamental and its harmonics at the output of various microwave solid state amplifiers have been measured as a function of load mismatch. Results are obtained for load impedances that lie on a selected series of VSWR circles on a S

DISTORTION CHARACTERISTICS IMPATT DIODE OSCILLATORS T .Berceli OF INJECTION LOCKED GUNN AND ABSTRACT The distortion characteristics of injection locked Gunn and Impatt diode oscillators are investigated both theoretically and experimentally. For FM signal transmission, the distortion is determined mostly by the derivated characteristics: group delay, AM-to-PM conversion and AM compression. Due

AN L-BAND INTERFEROMETER ANTENNA ARRAY USING LEAKY-WAVE CORRECTED, UNSYMMETRICAL SECTORAL HORNS C. ANCONA x ABSTRACT - The author presents a 32 interferometer L-band array, part of an air-ground experimental data link system. The array is made of 8 E-plane wide angle sectoral horns using a technique of unsymmetrical leaky-wave correction in order to synthesize the required pattern: cosecant wi

L-BAND ANTENNA FOR AIRCRAFT-TO-SATELLITE COMMUNICATIONS Hormann, Eberhard; Lovis, Dietrich; Reitzig, Rafael ABSTRACT An L-band aircraft transmit/receive antenna for the future AEROSAT system is proposed. It consists of two identical phase-scanned four-spiral antenna arrays mounted laterally on either side of the upper area of the aircraft body. The fan-beam is pointed in 10 different angu

ANTENNA PATTERNS WITH ARBITRARY SIDE LOBE TOPOGRAPHY Robert S. Elliott+ ABSTRACT A perturbation technique which will modify Taylor-type linear and circular aperture distributions to give sum and difference patterns with arbitrary side lobe topography is described and illustrated by several practical cases. A new technique for discretizing the resulting continuous aperture distributions is

PRINTED CIRCUIT RADIO LINK ANTENNA Martti Tiuri, Johan Henriksson and $tefan Tallqvist ABSTRACT A printed circuit antenna which substitutes a paraboloid antenna in radio link applications at 1.8 GHz has been developed. The antenna is a novel traveling wave antenna, a so called grid antenna. It consists of a ground plane close to which is a printed sheet with several pairs of meander lines.

THEORY AND APPLICATIONS OF BROADBAND MICROS TRIP ANTENNAS G. DUBOST, M. NICOLAS, . .. H. HAVOT . . ABSTRACT. An experimental parametric study of a micros trip antenna is given. This antenna is a flat, broad-folded dipole parallel to and at a short distance from a reflector plane. Radiating characteristics are excellent, and in particular bandwidth is sufficient enough for various applicati

DETAILED DIGITAL LOSS INVESTIGATION SAW TRANSDUCER WAVE ON THE GROUP-TYPE WITH UNIDIRECTIONAL INTER- ITS APPLICATION TO LOW INSERTION SURFACE FILTERS by Felix M. Nyffeler ABSTRACT: Filters employing the standard two-transducer configuration have an inherent 6 dB minimum insertion loss due to bidirectionality. Furthermore, they show a strong passband ripple owing to various reflections bet