Invention Grant
- Patent Title: Apparatus and methods for digital predistortion
- Patent Title (中): 数字预失真的装置和方法
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Application No.: US14324523Application Date: 2014-07-07
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Publication No.: US09431972B1Publication Date: 2016-08-30
- Inventor: Lei Xu
- Applicant: ALTERA CORPORATION
- Applicant Address: US CA San Jose
- Assignee: Altera Corporation
- Current Assignee: Altera Corporation
- Current Assignee Address: US CA San Jose
- Agency: Okamoto & Benedicto LLP
- Main IPC: H03F1/26
- IPC: H03F1/26 ; H03F1/32

Abstract:
The present disclosure provides advantageously flexible and effective methods, circuits and systems for digital predistortion. In one embodiment, a predistortion component circuit includes multiple configurable delay line pairs and corresponding configurable look-up tables. Each configurable delay line pair includes a first delay line for delaying an input data signal to provide a delayed input and a second delay line for delaying an input magnitude signal to provide a delayed input magnitude. Each configurable look-up table receives the delayed input magnitude from, and outputs a look-up value for, an associated delay line pair of the plurality of configurable delay line pairs. Other embodiments, aspects and features are also disclosed herein.
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