公开(公告)号：US20240204786A1

公开(公告)日：2024-06-20

申请号：US18229161

申请日：2023-08-01

Applicant: Airoha Technology Corp.

Inventor： Chun-Yuan Huang ,  Chin-Chang Chang ,  Jeng-Hong Chen ,  Yun-Xuan Zhang

IPC: H03L7/099 ,  H03L7/081

CPC classification number: H03L7/0991 ,  H03L7/0814

Abstract: 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.