公开(公告)号：EP4145706A1

公开(公告)日：2023-03-08

申请号：EP22191733.9

申请日：2022-08-23

Applicant: STMicroelectronics S.r.l.

Inventor： FRANCESCHIN, Alessandro ,  MAZZANTI, Andrea ,  PALLOTTA, Andrea

IPC: H03L7/099 ,  H03B5/12

Abstract: A voltage controlled oscillator includes a series resonant circuit (2), having a resonance frequency (ω 0 ) and an active voltage driving device (3), coupled to the series resonant circuit (2) and configured to provide a driving voltage (V x ) and to have an output negative resistance (R 0 ) in an operative voltage range (V R ) at the resonance frequency (ω 0 ). The active voltage driving device (3) comprises a cross-coupled differential pair (20) having voltage supply terminals (3a, 3b) and the series resonant circuit (2) is coupled to the voltage supply terminals (3a, 3b) of the cross-coupled differential pair (20).