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:
Jun. 04, 2002
Filed:
Aug. 13, 2001
Applicant:
Inventor:
Balbir Kumar, Wembley, GB;
Assignee:
BAE Systems Electronics Limited, Farnborough, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q 2/106 ;
U.S. Cl.
CPC ...
H01Q 2/106 ;
Abstract
A microwave receiving antenna system ( ) is described which is used to determine an originating direction of microwave radiation. The system has a birefringement phase plate ( ) which splits radiation incident on it into two components which undergo a differential phase delay as they pass through it. The amount of differential phase delay induced varies with angular position around the phase plate ( ) from 0 at an angular position of 0° to &lgr; an angular position of 360°. By determining the differential phase delay (assuming a previously existing relationship) the originating direction of the radiation can be determined.