公开(公告)号：US11936339B2

公开(公告)日：2024-03-19

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

CPC classification number: H03B5/1231 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/124

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.