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:
Dec. 01, 2009
Filed:
Aug. 09, 2007
Chin-cheng Chien, Daxl Town, TW;
Chien-hsien Ho, Taoyuan County, TW;
Chien-jung Lin, Kaohsiung, TW;
Yu-sheng Chang, Taoyuan County, TW;
Chin-Cheng Chien, Daxl Town, TW;
Chien-Hsien Ho, Taoyuan County, TW;
Chien-Jung Lin, Kaohsiung, TW;
Yu-Sheng Chang, Taoyuan County, TW;
Foxconn Communication Technology Corp., Taoyuan County, TW;
Abstract
A multi-band planar inverted-F antenna includes a radiating unit, a ground unit and a feeding unit. The radiating unit includes a common radiating element, a high-frequency (HF) radiating element and a low-frequency (LF) radiating element. A quasi U-shaped slot is defined between the HF radiating element and the LF radiating element. The ground unit is electrically connected to one side of the common radiating element. The feeding unit includes a strip electrically connected to one side of the HF radiating element. The ground unit includes a ground point and an inverted-L short-line connected to the ground point at one end thereof. The inverted-L short-line is also electrically connected to the common radiating element at another end thereof. A loop surface current induced by the inverted-L short-line can advantageously enhance bandwidth of the multi-band planar inverted-F antenna at frequencies of interest.