Title:
SIGNAL AMPLIFICATION CIRCUIT AND METHOD, AND SIGNAL TRANSMITTER
Document Type and Number:
WIPO Patent Application WO/2023/024090
Kind Code:
A1
Abstract:
The present application belongs to the technical field of electronics. Disclosed are a signal amplification circuit and method, and a signal transmitter. The method comprises: performing digital-to-analog conversion and power amplification on a first digital signal, so as to obtain a first analog signal, extracting distorted signals from the first analog signal in an analog domain and a digital domain, and coupling the extracted distorted signals with the first analog signal, so as to obtain an output signal. By means of the signal amplification circuit, distorted signals can be sequentially extracted from an analog domain and a digital domain, and therefore it can be ensured that there are few residues of main signals in the extracted distorted signals. Therefore, it can be ensured that after the distorted signals are coupled with a first analog signal, the distorted signals in the first analog signal can be effectively cancelled, thereby effectively improving the linearity of a final output signal.
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Inventors:
TANG HAIZHENG (CN)
LV JIA (CN)
XIAO YUXIANG (CN)
WEI HONGLIANG (CN)
LI JING (CN)
LV JIA (CN)
XIAO YUXIANG (CN)
WEI HONGLIANG (CN)
LI JING (CN)
Application Number:
PCT/CN2021/115088
Publication Date:
March 02, 2023
Filing Date:
August 27, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H03F1/32; H03F3/189; H04B1/02
Foreign References:
| CN1374812A | 2002-10-16 | |||
| CN103312274A | 2013-09-18 | |||
| CN112615632A | 2021-04-06 | |||
| CN1390063A | 2003-01-08 | |||
| CN108390651A | 2018-08-10 | |||
| CN103219957A | 2013-07-24 | |||
| CN105515592A | 2016-04-20 | |||
| CN1411147A | 2003-04-16 | |||
| US5770971A | 1998-06-23 | |||
| US20160191020A1 | 2016-06-30 |
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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