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. 30, 2004
Filed:
Jun. 03, 2003
Applicant:
Inventor:
Garrick Jon Harmon, Long Beach, CA (US);
Assignee:
Northrop Grumman Corporation, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 3/00 ; H01Q 3/02 ;
U.S. Cl.
CPC ...
H01Q 3/00 ; H01Q 3/02 ;
Abstract
A satellite antenna system ( ) that employs a small phased antenna array ( ) acting as redundant antenna. Because the phased array ( ) is steerable, it can be selectively directed to any of the cells ( ) on the Earth ( ) in the event that the LNA in an antenna channel ( ) fails. The phased array ( ) is switched into each antenna channel ( ) after the channel front end ( ) where a switch ( ) used to switch in the phased array ( ) is after the amplification in the channel ( ). Therefore, the switch ( ) does not significantly affect the noise figure of the channel front end ( ).