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. 24, 1991
Filed:
Feb. 14, 1990
Giovanni Pellegrineschi, Rome, IT;
Selenia Spazio S.p.A., L'Aquila, IT;
Abstract
Adaptive phase and amplitude distributor for use with satellite antennae which require distribution of transmitter-generated microwave power over many elementary radiators having predetermined amplitude and phase characteristics thus achieving required radiation patterns. It consists essentially of two polarizers three circular waveguide rotating joints, all interconnected in a joint-to-polarizer-to-joint-to-polarizer-to-joint relation and followed by an orthomode.TM. transducer output which serves to separate the orthogonal components of the electromagnetic field. By rotating the two polarizers around the waveguide axis independently and by suitable choice of the rotating angles, it is possible to distribute the power entering at one port, say in the TE.sub.11 mode, on the two orthogonal components, still in TE.sub.11, with any amplitude and phase relationship at the output. The two components are separated by the orthomode.TM. transducer. The invention belongs to the microwaves field and more specifically to that of TLC satellites.