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. 01, 2022
Filed:
Sep. 16, 2019
Applicant:
Casio Computer Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
Casio Computer Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/12 (2006.01); G04R 60/10 (2013.01); H01Q 1/24 (2006.01); H01Q 1/27 (2006.01); H01Q 13/10 (2006.01); H01Q 9/30 (2006.01); G04G 21/04 (2013.01); H01Q 7/00 (2006.01);
U.S. Cl.
CPC ...
G04R 60/10 (2013.01); G04G 21/04 (2013.01); H01Q 1/24 (2013.01); H01Q 1/273 (2013.01); H01Q 7/00 (2013.01); H01Q 9/30 (2013.01); H01Q 13/10 (2013.01);
Abstract
An antenna device includes a parasitic antenna which is a metal member used as a windshield fixing frame of a wristwatch type electronic device, and a feed antenna which is a conductor. The parasitic antenna has an annular shape, and is disposed close to the feed antenna, and is electromagnetically or capacitively coupled with the feed antenna, and acts as a parasitic antenna to which power is fed from the feed antenna in a non-contact manner, and thereby the feed antenna and the parasitic antenna act in cooperation with each other as a circular polarized antenna for receiving radar waves which are circularly polarized waves having a predetermined wavelength.