Thomson-csf

Philippe Legendre

Claude Van Kerrebroeck

Jean-Marie Nef

A device for measuring the power in a microwave transmission and for providing a measuring port at the output of a microwave signal generator or transmitter. First and second quarter wavelength transmission line sections, coupled in series with one another and having characteristic impedances Z.sub.2 and Z.sub.1 respectively, where Z.sub.2 &gt;&gt;Z.sub.1, are coupled at the first section to a predetermined point on a transmission line to be monitored. A port at the free end of the second section allows for the connection of two independent measuring circuits to the transmission line.

Microwave measuring device

Corrector consisting in arranging, in the circuit of an electrode of a transistor, or between two transistorized stages, of an amplifier to be corrected, a circuit equipped with at least one varactor in parallel with a resistance and fed by the current flowing through the transistor or transistors under a source impedance which is sufficiently low by comparison with that of this circuit, the effects of the variation in the capacitance of the varactor or varactors, in dependence upon the signal, compensating those due to this varactor effect.

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Paris, France

Philippe Legendre