Thomson-csf

Gilles Sillard

Michel Baril

Raymond Henry

Michel Heitzmann

Jacques Martel

A millimetric electromagnetic waves switch is constituted by a ridged waveguide associated to a PIN diode of which the layers P.sup.+ and N.sup.+ are very thin, of about 2 to 5 microns thickness. The width of the diode is inferior to that of the ridged part of the guide and its dimension according to the longitudinal axis of the guide is a multiple of the half-length of the guided wave.

Pin diode switch mounted in a ridge waveguide

A passive duplexer for electromagnetic waves operated within the millimetric wave range. The duplexer comprises a first horn associated with a radar transmitter and having a propagation axis (.DELTA..sub.1), a plane circular grid inclined at 45.degree. with respect to (.DELTA..sub.1), and a second horn associated with the radar receiver and having an axis (.DELTA..sub.2) at right angles to (.DELTA..sub.1). The grid is formed by a network of resonant slots equipped with at least one diode.

Passive electromagnetic wave duplexer for millimetric antenna

An electromagnetic wave switch is provided formed from a profiled wave-guide associated with a PIN diode, filling completely the profiled part of said guide, having a high breakdown voltage and a low thermal resistance.

Electromagnetic wave switch

The passive limiter is formed by at least two parallel micro-strip lines, a slot line orthogonal to the two micro-strip lines and a pair of diodes having the same polarity and placed on each edge of the slot line facing one another, the assembly of these three lines and the diodes forming at least two micro-strip line-slot line transitions.

Passive semiconductor power limiter formed on flat structure lines, and

A passive limiter formed as a wave-guide, in at least one cross-section of the guide, by means of one or more resonating windows in which is shunt-mounted at least head-to-tail one pair of diodes having the same polarity and being disposed in the same plane. One or more such limiters may be contemplated for forming duplexers.

Growing community of inventors

Paris, France

Gilles Sillard