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. 15, 2017
Filed:
Aug. 28, 2014
Chiun Mai Communication Systems, Inc., New Taipei, TW;
Geng-Hong Liou, New Taipei, TW;
Yen-Hui Lin, New Taipei, TW;
Chiun Mai Communication Systems, Inc., New Taipei, TW;
Abstract
An antenna structure includes a monopole antenna, a short parasitic antenna and an impedance matching circuit. The monopole antenna includes a first radiating body, a second radiating body and a feeding portion coupled to the first radiating body and the second radiating body. The first radiating body configured to excite a low-frequency resonating mode; the second radiating body configured to excite a first high-frequency resonating mode. The short parasitic antenna includes a parasitic body spaced apart from the second radiating body and a grounding portion coupled to the parasitic body. The short parasitic antenna configured to excite a second high-frequency resonating mode, and resonate with the second radiating body to excite a third high-frequency resonating mode. The impedance matching circuit includes a variable capacitor configured to regulate operating frequency band of the low-frequency resonating mode.