MICROWAVE MOISTURE MEASUREMENTSWITH REDUCED SENSITIVITY TO PARTICLE SIZE AND SHAPE A. Klein*, W. Schicker**, B. Schiek** ABSTRACT For the determination of moisture content the disturbing influences of particle size and shape can be reduced by a combined evaluation of the real and imaginary part of the dielectric constant. However the suggested formula is sensitive to the dielectric constant of

~I" ATTENUATION 0' CENTIMETER, MILLIMETER AND SUBMILLIMETER RADIO WAVES Matsuo Sekine* and Goran Lind** ABSTRACT The rain attenuation from 1 to 1000 GHz was calculated by using a Weibu11 distribution for raindrop-size, which was assumed to be caused by coalescence, drop break-up and a chain reaction process. The results showed a good agreement with the recent microwave measurements fro

AN IMPROVED TERRESTRIAL Olav Rue* METHOD FOR RAIN ATTENUATION PREDICTION;ON PATHS AND EARTH-SPACE ABSTRACT Theory for attenuation in non-homogeneous rain is extended to include the probability function of equivalent rain cell diameters. An improved method for rain attenuation prediction is proposed. Predicted results are compared with experimental data obtained on 41 terrestrial links and 5 ea

MEASUREMENTSOF CflO$J3 ,PO~AR EFFECT::; FROM PARTICLES USING ANOPtNRESONAroR ; L.J. Auchterlonie, D. Smith. ABSTRACT The possibility and advantages of being able to measure crosspolar scattering effects from particles which are captive within an open-resonator system are discussed. Experiments using a large X-band open-resonator have identified the existence of a resonant mode, polarised orthog

MEASUREMENT OF POWER DENSITY IN A LOSSY MATERIAL BY MEANS OF ELECTROMAGNETICALLY INDUCED ACOUSTIC SIGNALS FOR NON-INVASIVE DETERMINATION OF SPATIAL THERMAL ABSORPTION IN CONNECTION WITH PULSED HYPERTHERMIA F. Caspers * and J. Conway ** ABSTRACT For non-invasive determination of the spatial power density distribution during RF- and microwave hyperthermia it is proposed to apply the electromagne

AN IMPROVED MICROWAVE RADIOMETER FOR MEASUREMENTS ON THE HUMAN BODY S. Osterrieder and G. Schaller * ~- ABSTRACT The on and and is construction and performance of a 4 GHz-radiometer for measurements the human body is presented. The radiometer measures the temperature emissivity simultaneously and independent of each other. Experimental theoretical results are given and the resolution of the r

INfROruCTION TO CORRELATION MICROWAVE THERM)GRAPHY A. Mammmi, Y. Leroy, J. C. Van de Velde, 1. Bellarbi ABSTRACT Correlation Microwave Thermography, a new process based coherent detection of noise, is able to improve the localization thermal gradients in the tissues. We explain the principles, method and describe the first system which has been built and Several experiments point out that wit

MICROWAVE (IGHz and 2.45GHz) and RADIOFREQUENCY (13.56MHz) HYPERTHERMIA MONITORED BY MICROWAVE THERMOGRAP~IT by M. CHIVE, M. PLANCOT, Y. LEROY *** ~* G. GIAUX, ABSTRACT B. PREVOST We present here experiments and clinical results obtained with microwave systems combining microwave local heating (at IGHz and 2.45GHz) and microwave thermography in the 2-4GHz frequency range. A radiofrequency hy

A"60 GHZ HAND-HELD LPI-TRANSCEIVER A. Plattner, H. Meinel* Abstract Millimeter wave frequencies near the oxygen absorption of the athmosphere around 60 GHz can be used for short-range low probability of intercept (LPI) communications. In order to investigate the behaviour of mm-wave hand-held radio links ,~m,;~+J-~D.Sl.li&htweight transceiver units have been developed at bO~~The millimeter-wa

ANALYSIS OF INSULAR GUIDE LAUNCHER RADIATION LOSS AND COMPARISON WITH MICROSTRIP COUNTERPARTS G John, A Henderson and J R James* ABSTRACT An analysis of a launching configuration enables the radiation loss associated with the feed region of a millimetre wave insular guide to be assessed. Series expansions of the guide fields are used in conjunction with a variational formulation of the launcher