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:
Apr. 12, 2011
Filed:
Mar. 05, 2008
Ilan Saul Barak, Kfar-Saba, IL;
Danny Spirtus, Holon, IL;
Doron Rainish, Ramat-Gan, IL;
Stanimir Dimitrov Kamenopolski, Sofia, BG;
Plamen Hristov Bazirgianov, Sofia, BG;
Ilan Saul Barak, Kfar-Saba, IL;
Danny Spirtus, Holon, IL;
Doron Rainish, Ramat-Gan, IL;
Stanimir Dimitrov Kamenopolski, Sofia, BG;
Plamen Hristov Bazirgianov, Sofia, BG;
Raysat Inc, Vienna, VA (US);
Abstract
A system for utilizing circular polarized signals to perform satellite communication to mobile users. The satellite includes transponders, each transponder providing linearly polarized signals and at least two orthogonal linear polarized transponders. A plurality of mobile users with a circularly polarized antenna for receiving signals from the satellite, and singly circular or linear polarized transmit antennas for transmitting signals to the satellite. Circuits for providing a correction scheme implemented in a hub side to offset frequency error between two channels produced by the satellite transponder local oscillators mismatch.