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:
Sep. 16, 2008
Filed:
Apr. 04, 2007
Ming-hsun Chung, Taipei, TW;
Tsung-wen Chiu, Taipei, TW;
Fu-ren Hsiao, Taipei, TW;
Yu-ching Lin, Taipei, TW;
Chun-ching Lan, Taipei, TW;
Ming-Hsun Chung, Taipei, TW;
Tsung-Wen Chiu, Taipei, TW;
Fu-Ren Hsiao, Taipei, TW;
Yu-Ching Lin, Taipei, TW;
Chun-Ching Lan, Taipei, TW;
Advanced Connectek Inc., Taipei, TW;
Abstract
A multi-frequency antenna with dual loops is provided. The antenna includes a T-shaped radiator having a first arm and a second arm of unequal lengths as a main body, and two grounded L-shaped radiators, so as to form dual loops. Thus, the antenna can operate in a high-frequency operation mode and a low-frequency operation mode. With the dual loops, the antenna obtains enough bandwidths at high frequency, and also meets the requirements of low frequency. More specific, the antenna meets the requirements of high-frequency systems, such as DCS/PCS/UMTS and those of low-frequency systems, such as AMPS/GSM.