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. 29, 2008
Filed:
Nov. 22, 2004
Kiet D. Ngo, Hermosa Beach, CA (US);
David P. Dixon, Torrance, CA (US);
Steven B. Schrier, Hawthorne, CA (US);
Kiet D. Ngo, Hermosa Beach, CA (US);
David P. Dixon, Torrance, CA (US);
Steven B. Schrier, Hawthorne, CA (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
Abstract
Apparatus, and a corresponding method, for spatially isolating a transmit beam and a receive beam, which, in satellite communication systems, are inherently separated by a look ahead angle. A receive beam separation mirror is positioned in the receive beam path but out of the transmit beam path, and the receive beam is reflected along a path separated from the transmit beam path. The mirror may be annular, allowing the transmit beam to be directed through the center of the mirror. In applications where a desired isolation angle is different from the look ahead angle, or where there is no look ahead angle, the receive beam separation mirror is used in conjunction with a dichroic beam splitter and at least one receive beam steering mirror, to achieve the desired angular separation.