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. 13, 2019
Filed:
Mar. 10, 2017
Applicant:
Topcon Positioning Systems, Inc., Livermore, CA (US);
Inventors:
Andrey Vitalievich Astakhov, Moscow, RU;
Dmitry Vitalievich Tatarnikov, Moscow, RU;
Pavel Petrovich Shamatulsky, Moscow, RU;
Assignee:
TOPCON POSITIONING SYSTEMS, INC., Livermore, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 9/04 (2006.01); H01Q 5/385 (2015.01);
U.S. Cl.
CPC ...
H01Q 9/0428 (2013.01); H01Q 5/385 (2015.01); H01Q 9/0407 (2013.01); H01Q 9/0414 (2013.01); H01Q 9/0442 (2013.01);
Abstract
A right-hand circularly-polarized patch antenna comprising a ground plane and a patch connected to each other with one or more wires for which the wire shape and location of the end points are selected such that they do not cause an antenna mismatch, and the electrical current carried in the wires produces an extra electromagnetic field subtracted from the patch field in the nadir direction.