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:
Aug. 09, 2011
Filed:
May. 26, 2009
Applicants:
Kwai Man Luk, Kowloon, HK;
Ka Leung Lau, Tai Po, HK;
Inventors:
Kwai Man Luk, Kowloon, HK;
Ka Leung Lau, Tai Po, HK;
Assignee:
City University of Hong Kong, Hong Kong, HK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a patch antenna comprising a patch spaced from a ground plane and two L-shaped feed probes. Each feed probe is connected to a respective input port and has a portion extending parallel to the patch. The antenna further includes at least two walls extending from the ground plane towards the patch. The walls are positioned between the L-shaped feed probes so as to permit direct propagation between the input ports and also to create indirect diffraction paths between the input ports that serve to cancel at least a part of said direct propagation.