公开(公告)号：US20230081414A1

公开(公告)日：2023-03-16

申请号：US17894548

申请日：2022-08-24

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandro FRANCESCHIN ,  Andrea MAZZANTI ,  Andrea PALLOTTA

IPC: H03B5/12

Abstract: A voltage controlled oscillator includes a series resonant circuit having a resonance frequency and an active voltage driving device coupled to the series resonant circuit. The active voltage driving device provides a driving voltage and has an output negative resistance in an operative voltage range at the resonance frequency. The active voltage driving device includes a cross-coupled differential pair having voltage supply terminals providing the driving voltage. The series resonant circuit is coupled between the voltage supply terminals of the cross-coupled differential pair.