Microwave frequency device comprising at least a transition betw

Details Microwave frequency device comprising at least a transition betw Microwave frequency device comprising at least a transition betw

1993-12-15

1995-05-09

Gensler, Paul

Wave transmission lines and networks

Coupling networks

Balanced to unbalanced circuits

333 34, H01P 5107

Patent

active

054143942

ABSTRACT:
Microwave frequency device comprising at least a transition between a transmission line (24) integrated on a substrate (23) of a hard material, disposed in a first microwave frequency cavity (31), and waveguides (100) having a second microwave frequency cavity (102a, 102b). This transition comprises an open end (25a, 25b) of the integrated line which end forms a probe inserted over a length l into the cavity of the waveguide, at a distance D from a short-circuit (42a, 42b) which closes off the end of the waveguide. This transition also comprises an impedance adapting system with, on the one hand, a dimensional restriction (33a, 33b) of the first microwave frequency cavity (31) which is perpendicular to the direction of propagation over a given length L parallel with the direction of propagation in the integrated line (24) and comprises, on the other hand, a restriction of the dimensions of the cross section of the waveguide areas (22a, 32a; 22b, 32b) between the probes (25a, 25b) and the short-circuit planes (32a, 42b).

REFERENCES:
patent: 4409566 (1983-10-01), Patton et al.
patent: 4453142 (1984-06-01), Murphy
patent: 4716386 (1987-12-01), Lait
patent: 5235300 (1993-08-01), Chan et al.
Shih et al., "Waveguide-To-Microwave Transitions For Millimeter-Wave Applications", 1988 IEEE MTT-S Digest, P-4, pp. 473-475.

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