DEVELOPMENTS IN MICROWAVE HOLOGRAPHIC IMAGING . A.P. Anderson ABSTRACT r ,,~" ~'f ~ ~' . ;V1br WT (;1-# . r ; ,w7 ,M ) IJ/t rv<'~';'f \~V The evolution of microwave imaging is traced from its origin as a primitive analogue of optical holography to its present stage as a diagnostic imaging technique in its own right. The essential operations comprising data acquisition, data processi

MICROWAVE POWER FOR THERMONUCLEAR FUSION MACHINES* G. MOURIER ABSTRACT Present experimental machines used in research on controlled thermonuclear fusion require additional power of a few or many megawatts for a few seconds. Although experiments with energetic neutral beams are progressing satisfactorily, this technique may not be feasible in large machines. RF waves can also be used, in seve



MICROWAVE COMMUNICATIONS FROM THE OUTER PLANETS: THE VOYAGER PROJECT Albert G. Brejcha* ABSTRACT During the late 1970s, there is a rare alignment of the outer planets which allows a single spacecraft to fly a mu1tip1anet mission. The Voyager Project, which will fly two spacecraft past Jupiter and Saturn, is such a mission. In the late summer of Air Force Eastern Test experiments to gather an

11ICROWAVE TECHNIQUES In THE ~IAGNOSIS AND TREATMENT OF CANCER Jochen Edrich ABSTRAC~ Naturally emitted thermal radiation of the human body at cm and mm wavelengths can be utilized to image subcutaneous temperature distributions and detect thermally active tumors. Contacting thermographs that were developed for such point-by-point measuremerits at long cm wavelengths are compared with remote

HEXAGONAL FERRITES AT MILLIMETER WAVELENGTHS G. Winkler and H. D6tsch ABSTRACT: Hexagonal ferrites may show a renaissance as candidates for various microwave devices in the millimeter wavelength range if perfect and low-loss materials, either bulk crystals or epitaxial layers, can be grown. Use is made of the large anisotropy fields of compounds with uniaxial magnetic anisotropy. These intr

MICROWAVE BIPOLAR TRANSISTOR TECHNOLOGY - PRESENT AND PROSPECTS Craig P. Snapp ABSTRACT This paper reviews the present status and future prospects for si bipolar transistors and monolithic integrated circuits designed for applications at frequencies above 500MHz. The technological limitations on performance are discussed as well as the fundamental strengths and basic terminal characteristics w

UTILISATION OF MICROWAVE BANDS FOR DIGITAL RADIO-RELAY SYSTEMS R S SWAIN ABSTRACT This paper discusses the influence that some geographical, national and system constraints can have on the utilisation of microwave frequency bands for the digital transmission of public communications by radio. Consideration is given to the digitalisation of the analogue networks currently occupying bands bet

APPLICATION OF INVERTED STRIP DIELECTRIC WAVEGUIDES MATERIAL PROPERTIES AT MILLIMETER-WAVE FREQUENCIES FOR MEASUREMENT OF Tatsuo Itoh* and Fwu-Jih Hsu ABSTRACT An entirely new method for measuring dielectric properties of slab type materials is developed by using a novel dielectric waveguide structure originally designed for millimeter-wave integrated circuits. The method entails the measur

A NEW APPROACH WAVEGUIDES Tullio E. Rozzi TO INTERACTING DISCONTINUITIES IN PLANAR DIELECTRIC ABSTRACT Planar dielectric waveguides are important in electro-optics and at millimeter frequencies. In many integrated optical components grooves are etched and overlays are deposited on the planar surface. Corrugations are used in antenna feeds and in various dielectric slow wave structures in mill