Title:
SIGNAL PROCESSING CIRCUIT, SIGNAL PROCESSING METHOD AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/041387
Kind Code:
A1
Abstract:
The embodiments of the present application are applied to the technical field of wireless communication transmission. Provided are a signal processing circuit, a signal processing method and an electronic device. The signal processing circuit down-converts, by means of a local oscillator signal, a radio-frequency signal obtained by means of frequency-shift keying modulation into an intermediate-frequency signal; uses a frequency amplitude converter to convert a frequency signal, which is carried by the intermediate-frequency signal, into a first amplitude signal; and then performs demodulation on the basis of an amplitude value of the first amplitude signal, so as to obtain corresponding data information. The local oscillator signal has a frequency deviation, which influences demodulation. Therefore, an amplitude value measurer is provided in a signal processing circuit to measure the amplitude value of the first amplitude signal output by the frequency amplitude converter, so as to obtain the magnitude of the frequency deviation; and the magnitude of a frequency value of the local oscillator signal is adjusted according to the magnitude of the frequency deviation, thereby avoiding the influence on demodulation caused by the frequency deviation of the local oscillator signal, and thus improving the precision of the data information demodulated from the radio-frequency signal obtained by means of frequency-shift keying modulation.
Inventors:
LI QIANG (CN)
Application Number:
PCT/CN2023/112038
Publication Date:
February 29, 2024
Filing Date:
August 09, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B1/16
Foreign References:
| JP2009005046A | 2009-01-08 | |||
| JP2009302862A | 2009-12-24 | |||
| CN108123763A | 2018-06-05 | |||
| CN112485520A | 2021-03-12 | |||
| US20220078056A1 | 2022-03-10 |
Attorney, Agent or Firm:
BEIJING ZBSD PATENT & TRADEMARK AGENT LTD. (CN)
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