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.:

US 8957818 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 17, 2015

Filed:

Jun. 04, 2012
Applicant:

Ming H. Chen, Rancho Palos Verdes, CA (US);

Inventor:

Ming H. Chen, Rancho Palos Verdes, CA (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q 13/00 (2006.01); H01Q 13/10 (2006.01); H01Q 13/22 (2006.01); H01Q 21/06 (2006.01); H01Q 21/24 (2006.01);
U.S. Cl.
CPC ...
H01Q 13/22 (2013.01); H01Q 21/068 (2013.01); H01Q 21/24 (2013.01);
Abstract

A circularly polarized waveguide slot array includes first and second waveguide sections, the first waveguide section extending along a longitudinal axis, and including an antenna element for transmitting or receiving a circularly polarized signal. The second waveguide slot section is coupled side-to-side with the first waveguide slot section and extends along the longitudinal axis, the second waveguide slot section including an antenna element for transmitting or receiving the circularly polarized signal at a phase which is substantially complementary to the circularly polarized signal transmitted by or received by the first waveguide slot section. Further exemplary, the antenna element disposed on the first waveguide slot section is offset from said antenna element disposed on the second waveguide slot section substantially one half of a predefined guide wavelength λalong said longitudinal axis.


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