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:
Dec. 01, 1987
Filed:
Jun. 05, 1986
William G Sterns, Canoga Park, CA (US);
ITT Gilfillan, a division of ITT Corporation, Van Nuys, CA (US);
Abstract
This invention relates to two embodiments of microwave polarization control networks. The first produces two sets of orthogonal linear polarizations and constitutes a two position transfer switch and a directional coupler having two ports alternating as input and isolated ports and two ports alternating as through and coupled output ports. The transfer switch is connected to switch an input to one or the other of the two ports alternating as input and isolated ports and couple the other to a termination. An ortho-mode transducer junction, having two input ports, has one input port coupled directly to one of the output ports of the directional coupler and the other input port connected in series through a 0.degree./180.degree. phase shifter to the other output port of the directional coupler. A dual mode waveguide is employed for transmitting a variable polarization output from the ortho-mode junction. In another embodiment, the transfer switch is not employed, and a 90.degree. differential phase shifter is incorporated in the dual mode waveguide whereby either linear or circular polarization may be obtained.