Invention Grant
- Patent Title: Power amplifier time-delay invariant predistortion methods and apparatus
- Patent Title (中): 功率放大器延时不变预失真方法和装置
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Application No.: US13724157Application Date: 2012-12-21
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Publication No.: US09077297B2Publication Date: 2015-07-07
- Inventor: Dali Yang , Jia Yang
- Applicant: Dali Systems Co. Ltd.
- Applicant Address: KY George Town, Grand Cayman
- Assignee: DALI SYSTEMS CO., LTD.
- Current Assignee: DALI SYSTEMS CO., LTD.
- Current Assignee Address: KY George Town, Grand Cayman
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: H04B1/04
- IPC: H04B1/04 ; H03F1/32 ; H03F3/24

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
- US20130147550A1 Power Amplifier Time-Delay Invariant Predistortion Methods and Apparatus Public/Granted day:2013-06-13
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