公开(公告)号：US20250125771A1

公开(公告)日：2025-04-17

申请号：US18537821

申请日：2023-12-13

Applicant: RichWave Technology Corp.

Inventor： Po-Chun Chang

IPC: H03B5/12

Abstract: A voltage controlled oscillator includes a cross coupled pair circuit, a first capacitive circuit, a first inductor, a second inductor, a second capacitive circuit and a first switch circuit. The first capacitive circuit is arranged in parallel with the cross coupled pair circuit. The first inductor is arranged in parallel with the cross coupled pair circuit and has a center tapped node for receiving a power supply voltage. The second inductor is magnetically coupled with the first inductor and has a center tapped node for receiving a first control voltage. The second capacitive circuit is arranged in parallel with the second inductor. The first switch circuit is arranged in parallel with the second inductor and configured to be turned on or turned off by a second control voltage. The first control voltage and the second control voltage change synchronously.