METHOD AND APPARATUS FOR APPLYING PHASE SHIFT TO DIGITAL PHASE-LOCKED LOOP CIRCUIT TO ADJUST FREQUENCY OF LOCAL OSCILLATOR SIGNAL USED BY DOWN-CONVERSION

A wireless communication device includes a receiver circuit, a phase shift control circuit, and a digital phase-locked loop (DPLL) circuit. The receiver circuit includes a down-converter circuit that is used to apply down-conversion to an input signal according to a local oscillator (LO) signal. The...

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Bibliographic Details
Main Authors Chang, Chin-Chang, Zhang, Yun-Xuan, Huang, Chun-Yuan, Chen, Jeng-Hong
Format Patent
LanguageEnglish
Published 20.06.2024
Subjects
AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
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Summary:A wireless communication device includes a receiver circuit, a phase shift control circuit, and a digital phase-locked loop (DPLL) circuit. The receiver circuit includes a down-converter circuit that is used to apply down-conversion to an input signal according to a local oscillator (LO) signal. The phase shift control circuit is used to generate a phase shift signal. The DPLL circuit is used to generate the LO signal locked to an initial frequency under a frequency-lock state. In response to the phase shift signal, the DPLL circuit is further used to make the LO signal have a different frequency without leaving the frequency-lock state.
Bibliography:Application Number: US202318229161