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:
Jun. 03, 2014
Filed:
Dec. 29, 2011
Kuo-fong Hung, Changhua, TW;
Shih-wei Hsieh, Taipei, TW;
Ho-chung Chen, Taipei, TW;
Mao-lin Wu, Jhubei, TW;
Kuo-Fong Hung, Changhua, TW;
Shih-Wei Hsieh, Taipei, TW;
Ho-Chung Chen, Taipei, TW;
Mao-Lin Wu, Jhubei, TW;
Mediatek Inc., Hsin-Chu, TW;
Abstract
A circular polarization antenna includes a substrate, a ground plane, a tuning stub, a feeding element, and a cavity structure. The substrate has a first surface and a second surface. The feeding element is disposed on the first surface of the substrate. The ground plane is disposed on the second surface of the substrate and has a hole. The tuning stub is disposed on the second surface of the substrate and connected to the edge of the hole. The cavity structure is connected to the ground plane and configured to reflect an electromagnetic wave.