Title:
PHASE-LOCKED LOOP, RADIO FREQUENCY SIGNAL TRANSMITTER, RADAR SENSOR AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/169609
Kind Code:
A2
Abstract:
The present application provides a phase-locked loop, a radio frequency signal transmitter, a radar sensor and an electronic device. The phase-locked loop comprises a phase-locked loop circuit, a controlled charge compensation circuit and a digital modulation controller. The phase-locked loop circuit is connected to the charge compensation circuit. The digital modulation controller is connected to the phase-locked loop circuit and outputs a frequency control signal, so that the phase-locked loop circuit generates a valid interval of a frequency modulation signal according to the frequency control signal. The digital modulation controller is further connected to the charge compensation circuit, and the charge compensation circuit is controlled to adjust a charge in the phase-locked loop circuit in an invalid interval of the frequency modulation signal, so as to shorten the duration of frequency callback of the frequency modulation signal.
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Inventors:
ZHOU WENTING (CN)
Application Number:
PCT/CN2023/105768
Publication Date:
September 14, 2023
Filing Date:
July 04, 2023
Export Citation:
Assignee:
CALTERAH SEMICONDUCTOR TECH SHANGHAI CO LTD (CN)
International Classes:
H03L7/085
Attorney, Agent or Firm:
SHANGHAI CHENHAO INTELLECTUAL PROPERTY LAW FIRM GENERAL PARTNERSHIP (CN)
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