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. 04, 2013
Filed:
Jun. 01, 2012
Jian Ou, Shenzhen, CN;
Jian Ou, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A power amplifier, which includes n+1 amplifying units coupled in parallel, where n is an integer greater than or equal to 0, third input ends VR(i) of the n+1 amplifying units are coupled to a power input V, output ends D(i) of the n+1 amplifying units are coupled to a power input V, and an output power of the power amplifier is in an increasing function relationship with a capacitance value obtained through accumulation of energy returning capacitors xC of the n+1 amplifying units. The power amplifier changes circuit impedance in a manner of controlling the parallel capacitance value by a switching digital signal, thereby controlling a magnitude of a returned power value and forming different output powers.