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:
Nov. 19, 1991
Filed:
Dec. 01, 1989
Bernhard Huder, Ulm, DE;
Telefunken Systemtechnik GmbH, Ulm, DE;
Abstract
A mode coupler for monopulse applications in an antenna feed system which is used for obtaining angle deviations in azimuth and elevation, and which has a main wave guide in which a plurality of electromagnetic wave modes can be propagated. The mode coupler also has a plurality of mode-selective in/out coupling ports which are all formed as simple standard wave guides mounted on the main wave guide, and in which only the H.sub.10 mode is propagatable. A separator plate is disposed in the main wave guide to convert the (H.sub.11 +E.sub.11) mode into two phase-opposed wave guide waves and, via a coupling loop, to couple them into a second wave guide mounted laterally on the main wave guide. The front edge of the separator plate forms a reflector for the H.sub.01 mode, and the reflected HO.sub.1 wave is coupled out of the main wave guide by a pair of wave guides mounted symmetrically on the main wave guide and connected via an H-plane junction to a common output wave guide.