COMPLEX PERMITTIVITY OF MOROCCAN PHOSPHATE CONTENT. AS FUNCTION OF MOISTURE M. NAJIM*. M. ZYOUTE. K.NAJIM and T. OUAZZANI ABSTRACT This paper deals with the experimental results of hertrian spectrum analysis of phosphate as function of moisture content. A study has been developed in the microwaves frequencies range the results of this study has been used to built a moisture rate controlle



A MICROWAVE SPECTROMETER IN INDUSTRIAL B. Schiek, APPLICATIONS - SUITABLE FOR GAS ANALYSIS T. Paukner, W. Schilz * ABSTRACT: A compact spectrometer has been developed, operating between 18 and 26 GHz, suitable for industrial gas analysis in process and pollution control. The system is all solid state and may operate automatically. Care has been taken to minimize the system noise figure, amon

BROADBANDING OF A SUBMILLIMETRE-WAVE BACKWARD-WAVE OSCILLATOR R. Bonnefoy*, G. Kantorowicz** ABSTRACT and P. Palluel** As a consequence of the interest shown by astronomers for observation on board a space platform in the submillimetre-wave range, the European Space Agency has initiated a research and development programme on components required for advanced submillimetre-wave heterodyne detect

A ONE MEGAWATT, SEVEN PER CENT BANDWIDTH, PULSED KLYSTRON AMPLIFIER PERRING, D., PHILLIPS, G. and RANDALL, J.P. ABST RACT The paper reports on aspects of the design of a broadband klystron amplifier currently going into production. The tube has a low interception gridded gun, an overlapping mode extended interaction output section and a seven cavity buncher section. The design of buncher secti

A TRIPLE-POWER-MODE ADVANCED 11-GHz TWT D. Henry*, ABSTRACT A. Pelletier* and R. Strauss** Described is an advanced-performance 11-GHz TWT, developed by THOMSON-CSF for INTELSAT. Intended for future communicationsatellite programs, this TWT is based on an existing spacequalified tube (a 20-watt/11-GHz model), but has been designed for operation at three different power levels:20, 8 and 4 wat

HIGH roWER HIGHER ORDER MULTIPLICATION WITH STACK VARACTORS T.Berceli, L.Bus, F.Rakosi ABSTRACT The high power, both theoretically higher order multiplication is investigated and experimentally. In the theory, a large signal device model is used. A family of high power single stage multipliers using stack varactors has been developed with multiplication factors of 3, 4 and 6 for 1 and 2 GHz

STABLE MILLIMETER SOURCE USING AVALANCHE DIODE FREQUENCY MULTIPLICATION P.A. ROLLAND, E. PLAYEZ and G. SALMER ~ ABSTRACT The main characteristics of avalanche frequency multipliers are presented in order to show their capabilities when operated as stable millimeter wave sources. Performances and frequency dependance upon operating parameters such as temperature, input drive level, as

AN IMPROVED MICROWAVE VTO IN A TO 8 PACKAGE M. FACHE ABSTRACT A new miniaturized VTO bility and an improved is described, the aim spectral purity. of the design was a high sta- The high stability is obtained by using a medium power bipolar transistor developed by L.T.T., which operates with a strong current and a low collector emitter voltage. The rejection of the harmonics is provided by a

THIN FILM, VARACTOR-TUNED, OCTAVE BANDWIDTH OSCILLATORS Ronald N. Buswell and William D. Heichel ABSTRACT The design and construction of thin film, L- and S-Band octave bandwidth, varactor-tuned oscillators are described. A minimum power output of 10 mW was achieved from 1 to 2 GHz and from 2 to 4 GHz, and the overall performance is equal or superior to that of packaged component oscillators