THE FRINGING CAPACITANCE OF REFERENCE OPEN CIRCUITS ANALYSER CALIBRATION USED IN NETWORK C. Ambrose*and C. S. Ai tchison* ABSTRACT The effect of incorrectly calibrating an automatic using a wrong value for the open-circuit fringing studied. It was found that any measurement made will be in error by an amount that is independent error network. A new linear frequency dependent capacitance of an A

SWEPT MEASUREMENT OF SCREENING EFFECTIVENESS MICROWAVE FREQUENCIES Christian Stager, Walter Bolinger OF CONNECTORS AT RF AND ABSTRACT A new measuring principle of screening effectiveness of coaxial connectors allows swept measurements in Zo matched systems. The frequency range for the triaxial arrangement is 10 MHz to several GHz, depending only on the connector size. With the waveguide setup sc



SOIL MOISTURE DETERMINATION: EXPERIMF..NTS WITH PASSIVE MICROWAVE RADIOMETERS 1 1 1 2 2 P. Meylan, C. Morzier, R. Caloz, E. Schanda, Ch. Matzler ABSTRACT Long term observational programs have been followed in 1977 and 1978, on the determination of the relationship between emissivity and soil moisture on 3 test sites, representing 3 soil types. Five radiometers, whose frequencies are ce

A REAL TIME 155 GHz MICROWAVE MEASUREMENTS INTERFEROMETER IN LARGE PLASMA FOR REMOTE DEVICES ELECTRON DENSITY P.W. Huttemann and G. Waidmann ABSTRACT A frequency modulated 155 GHz millimeter wave interferometer was built to perform real time electron density measurements on a Tokamak plasma machine with a plasma diameter of 1 meter. An intermediate frequency IF = 312 kHz was selected at

A NEW MICROWAVE METHOD FOR TESTING NONLINEAR EFFECTS IN SOLIDS J.Konopka and J.J.Majewski+ ABSTRACT A new very sensitive method was developped for testing nonlinear effects in solids. Basic components of the meaEJUring system are: T1J)O microwave signal sources, a multimode cylindrical cavity and a superheterodyne receiver. The Q of the cavity loaded with the sample under test is monitored

MEASUREMENT USING OF THE DIELECTRIC MODES CONSTANT OF ANISOTROPIC CAVITY DIELECTRIC MATERIALS THE DEGENERATED OF A SPHERICAL Ingo Wolff and Norbert Schwab ABSTRACT A spherical resonator has many advantages for measuring the dielectric constant of anisotropic dielectric materials. It is a resonator of high Q-factor, it can be excited easily, it has threefold degenerated eigenfrequencies,



MICROWAVE THERMOGRAPHY; THE MODELING OF PROBES; AN APPROACH TOWARD THERMAL PATTERN RECOGNITION. ,.. .~ Robillard, D.D. Nguyen '''~' J-Ch. Bolomey"" ,.. -- .. .- ,.. ,.,. ,..III,.. ,.,. M. Chive, Y. Leroy, J. Audet, Ch. Pichot ABSTRACT Recent developments about Microwave Radiometry concern the Reception of the thermal signals emitted by subcutaneous human tissues (Microwave Thermograph

POSSIBILITIES OF MICROWAVE HEATING LEFEUVRE Serge . and experimental approaches show that microwave ene~ of tempera- Abstract: Theorical used together ture profile. with a classical one, can lead to a best control An example is given on a drying process.