Title:
ANALOGUE FRONT-END CIRCUIT, CHIP AND SIGNAL PROCESSING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/205929
Kind Code:
A1
Abstract:
Provided are an analogue front-end circuit, a chip and a signal processing apparatus. The analogue front-end circuit comprises a receiving circuit (10), a first operational amplification module (20), a second operational amplification module (30) and a control module (40), wherein the receiving circuit (10) is configured to receive an input signal of the analogue front-end circuit; the first operational amplification module (20) is configured to perform in-phase amplitude regulation on a signal output from the receiving circuit (10), so as to output a first analogue signal; the second operational amplification module (30) is configured to perform inverting amplitude regulation on the signal output from the receiving circuit (10), so as to output a second analogue signal; and the control module (40) is configured to choose, according to an attribute of the input signal, the first analogue signal or the second analogue signal, to output the first analogue signal or the second analogue signal.
Inventors:
YAN BO (CN)
WANG YUE (CN)
FANG CHAOMIN (CN)
LI JIANWEI (CN)
WANG YUE (CN)
FANG CHAOMIN (CN)
LI JIANWEI (CN)
Application Number:
PCT/CN2021/130506
Publication Date:
October 06, 2022
Filing Date:
November 15, 2021
Export Citation:
Assignee:
RIGOL TECH CO LTD (CN)
International Classes:
H03F3/20
Foreign References:
| US3560726A | 1971-02-02 | |||
| CN213846621U | 2021-07-30 | |||
| CN103427771A | 2013-12-04 | |||
| JP2018117233A | 2018-07-26 | |||
| JPH1197951A | 1999-04-09 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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