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:
Feb. 04, 2025
Filed:
Nov. 09, 2020
Applicant:
Harada Industry Co., Ltd., Tokyo, JP;
Inventor:
Yutaka Imamura, Tokyo, JP;
Assignee:
HARADA INDUSTRY CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 1/17 (2006.01); H01P 5/16 (2006.01); H01Q 9/04 (2006.01); H01Q 15/24 (2006.01); H03F 3/60 (2006.01); H03H 7/18 (2006.01); H03H 7/48 (2006.01); H04B 1/18 (2006.01);
U.S. Cl.
CPC ...
H01P 1/17 (2013.01); H01P 5/16 (2013.01); H01Q 9/0428 (2013.01); H01Q 15/244 (2013.01); H03F 3/60 (2013.01); H03H 7/185 (2013.01); H03H 7/48 (2013.01); H04B 1/18 (2013.01);
Abstract
A power feed circuit for a circularly polarized antenna includes a synthesizing-distributing unit and a phase shift unit. The synthesizing-distributing unit distributes input signals to two paths with the same phase and same amplitude. The phase shift unit has two phase shift circuits connected respectively between the two paths distributed by the synthesizing-distributing unit and two feed points of a circularly polarized antenna. The phase shift unit outputs signals whose phase difference is 90° to the two feed points and of the circularly polarized antenna.