Title:
NEAR-FIELD COMMUNICATION SYSTEM, CONTROL METHOD THEREFOR, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/155050
Kind Code:
A1
Abstract:
Embodiments of the present application provide a near-field communication system, a control method therefor, and an electronic device, which can ameliorate the problem of low sensitivity of a demodulator. The near-field communication system comprises a rectifier, a demodulator, and a power management unit; the demodulator comprises a transconductance circuit, a first current source, a signal source, a load module, a first signal input end, a second signal input end, a third signal input end, and a signal output end; a bias end of the transconductance circuit is coupled to the first current source, a second end of the transconductance circuit is coupled to the third signal input end, and a control end of the transconductance circuit is coupled to the first signal input end, the second signal input end, and the third signal input end; the transconductance circuit is used for selecting whether a current signal provided by the third signal input end flows to the first current source by means of a first end of the transconductance circuit or the second end of the transconductance circuit according to a comparison result of a voltage of the first signal input end or a voltage of the second signal input end with a voltage of the third signal input end.
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Inventors:
YU BAOLIANG (CN)
Application Number:
PCT/CN2022/076380
Publication Date:
August 24, 2023
Filing Date:
February 15, 2022
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L27/06; H04B5/00
Foreign References:
| CN113259292A | 2021-08-13 | |||
| CN101162912A | 2008-04-16 | |||
| CN106815625A | 2017-06-09 | |||
| US20090153240A1 | 2009-06-18 |
Attorney, Agent or Firm:
BEIJING ZBSD PATENT&TRADEMARK AGENT LTD. (CN)
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