Title:
DIGITAL PREDISTORTION CIRCUIT AND METHOD, AND RADIO FREQUENCY CHIP AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/051520
Kind Code:
A1
Abstract:
A digital predistortion circuit and method, and a radio frequency chip and an electronic device. The digital predistortion circuit comprises a first spectrum splicing circuit and a digital predistorter, wherein the first spectrum splicing circuit is used for performing spectrum splicing on a first multi-frequency signal so as to obtain a first broadband signal, the first multi-frequency signal comprises signals on two or more frequency bands, and the bandwidth of the first broadband signal is less than a frequency interval between the maximum frequency band and the minimum frequency band in the first multi-frequency signal; and the digital predistorter is coupled to the first spectrum splicing circuit, and is used for receiving the first broadband signal and predistorting the first broadband signal according to a first predistortion coefficient, so as to obtain a predistorted broadband signal, wherein the first predistortion coefficient is determined according to the first broadband signal and nonlinear characteristics of a power amplifier of a radio-frequency front-end circuit.
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Inventors:
DENG SENYANG (CN)
NING DONGFANG (CN)
CHEN WENHUA (CN)
ZHANG ZUOFENG (CN)
CHEN LONG (CN)
LI YUNHUA (CN)
NING DONGFANG (CN)
CHEN WENHUA (CN)
ZHANG ZUOFENG (CN)
CHEN LONG (CN)
LI YUNHUA (CN)
Application Number:
PCT/CN2023/115425
Publication Date:
March 14, 2024
Filing Date:
August 29, 2023
Export Citation:
Assignee:
ZTE CORP (CN)
UNIV TSINGHUA (CN)
UNIV TSINGHUA (CN)
International Classes:
H03F1/32; H04L25/49
Foreign References:
| CN110574288A | 2019-12-13 | |||
| CN110574288A | 2019-12-13 | |||
| CN101056288A | 2007-10-17 | |||
| CN104040883A | 2014-09-10 | |||
| CN104883140A | 2015-09-02 | |||
| CN109889166A | 2019-06-14 | |||
| KR20100040497A | 2010-04-20 | |||
| US20130094610A1 | 2013-04-18 |
Attorney, Agent or Firm:
BEIJING ZBSD PATENT & TRADEMARK AGENT LTD. (CN)
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