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. 02, 2015
Filed:
Jul. 09, 2012
Chien-ting Ho, Taoyuan County, TW;
Chun-wei Hsu, Taoyuan County, TW;
Chung-chi Lai, Taoyuan County, TW;
Chih-chin Su, Taoyuan County, TW;
Wan-ming Chen, Taoyuan County, TW;
Chien-Ting Ho, Taoyuan County, TW;
Chun-Wei Hsu, Taoyuan County, TW;
Chung-Chi Lai, Taoyuan County, TW;
Chih-Chin Su, Taoyuan County, TW;
Wan-Ming Chen, Taoyuan County, TW;
HTC Corporation, Taoyuan, TW;
Abstract
A mobile communication device and an impedance matching method thereof are provided. The mobile communication device includes an antenna, a power amplifier, a tunable matching circuit, a power detection circuit and a controller. The tunable matching circuit determines an output impedance encountered by a radio frequency (RF) signal transmitted by the power amplifier to the antenna when the RF signal enters the tunable matching circuit. The power detection circuit detects a forward power of the RF signal entering the antenna and a reflected power of the antenna. The controller tunes the tunable matching circuit according to a frequency range currently used by the mobile communication device, the forward power and the reflected power to steer the output impedance toward a corresponding load-pull impedance that the power amplifier has in the frequency range.