The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 1995
Filed:
Dec. 15, 1993
Patrice Gamand, Yerres, FR;
Christophe Cordier, Limeil-Brevannes, FR;
U.S. Philips Corporation, New York, NY (US);
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).