Transformer-based distributed multicore oscillator and integrated circuit and terminal thereof

Abstract

The present invention belongs to the field of radio frequency integrated circuit technology, and specifically relates to a transformer-based distributed multicore oscillator and an integrated circuit and a terminal thereof. The oscillator includes four MOS transistors M˜M, two transformers Tand T, two coarse capacitors arrays Cand C, two fine capacitors arrays Cand C, two tail inductances Land L. A first cross-coupled transistors pair is constisted by two MOS transistors Mand M, and a second cross-coupled transistors pair is constisted by two MOS transistors Mand M. Two pair are adjacent and are set in centre of the layout. Two signal output ports are defined by two drain regions of any two MOS transistors from the two pairs. The present invention synchronously solves the problem of high thermal phase noise and low-frequency flicker phase noise in existing oscillators.