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:
Jul. 13, 2010
Filed:
Jan. 25, 2005
Xiaowei Liu, Guangdong, CN;
Hongtao RU, Guangdong, CN;
Xiaowei Liu, Guangdong, CN;
Hongtao Ru, Guangdong, CN;
ZTE Corporation, Guangdong, CN;
Abstract
The present invention discloses a predistortion method based on vector envelope injection. The method includes the following steps: radio frequency input signals are divided into two signal streams; one input signal stream generates two envelope injection signals whose amplitudes can be adjusted independently; the other signal stream is divided into further two radio frequency signal streams; the two radio frequency signal streams are amplified with the same amplitude; frequency mixing is performed for the two envelope injection signals and two radio frequency signal streams respectively to obtain two compensation signals; the amplified radio frequency signal and compensation signals are power synthesized in the same way, so as to obtain two compensation signals and amplified radio frequency signals of different directions. This present invention also provides a corresponding predistortion device.