Alcatel N.v.

Alcatel Thomson Faisceaux Hertziens

Alcatel Thomson Faisceaux

Mustafa Gurcan

Jean-Claude Cruchon

Maurice Bernaud

Patrick Menuge

A microwave adjustment device for a transition between a hollow waveguide (11) and a plane transmission line (10), the device comprising: an intermediate coaxial waveguide (12) comprising a core (20) whose first end opens out into the hollow waveguide and terminates in an antenna (23) and whose second end passes through the substrate on which the plane transmission line is deposited; a curved metal tape (26) having a first end fixed to the second end of the core (20); and a screw (27) fixed to the second end of a tape (26) in order to adjust the gap between the second end and the transmission line (18). The invention is applicable to microwave beam telecommunications.

Microwave adjustment device for a transition between a hollow waveguide

A tuneable microwave filter comprises two branches of the same type each of which is connected to ground (22, 24) at each end and each of which includes a series-connected variable capacitance diode (13, 13A) controlled by a D.C. signal (V), said filter being disposed on the first face (9) of a plane substrate (8), with each branch comprising in series:

Tuneable microwave filter

The present invention relates to an E-plane type wideband composite filter comprising a conductive screening body (11, 12) having an elongate cavity (14) therein with a blade cut into a ladder shape disposed longitudinally therein. Said body comprises two portions held against each other on either side of a separation plane along which said ladder (15) is disposed, with two irises (16, 17) being disposed transversely at the inlet and at the outlet of said cavity (14), each closing off a portion thereof.

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Osny, France

Mustafa Gurcan