Invention Application
- Patent Title: Power Amplifier Time-Delay Invariant Predistortion Methods and Apparatus
- Patent Title (中): 功率放大器时延不变预失真方法和装置
-
Application No.: US13724157Application Date: 2012-12-21
-
Publication No.: US20130147550A1Publication Date: 2013-06-13
- Inventor: Dali Yang , Jia Yang
- Applicant: DALI SYSTEMS CO. LTD.
- Applicant Address: KY George Town
- Assignee: DALI SYSTEMS CO. LTD.
- Current Assignee: DALI SYSTEMS CO. LTD.
- Current Assignee Address: KY George Town
- Main IPC: H03F1/32
- IPC: H03F1/32

Abstract:
An embodiment of the invention is a time-delay invariant predistortion approach to linearize power amplifiers in wireless RF transmitters. The predistortion architecture is based on the stored-compensation or memory-compensation principle by using a combined time-delay addressing method, and therefore, the architecture has an intrinsic, self-calibrating time-delay compensation function. The predistortion architecture only uses a lookup table to conduct both the correction of non-linear responses of a power amplifier and the compensation of any time-delay effects presented in the same system. Due to the time-delay invariant characteristic, the predistortion design has a wider dynamic range processing advantage for wireless RF signals, and therefore can be implemented in multi-carrier and multi-channel wireless systems.
Public/Granted literature
- US09077297B2 Power amplifier time-delay invariant predistortion methods and apparatus Public/Granted day:2015-07-07
Information query
IPC分类: