公开(公告)号：HK1213371A1

公开(公告)日：2016-06-30

申请号：HK16101099

申请日：2016-02-01

Applicant: INTEL CORP

Inventor： ASHCKENAZI ORI ,  BANIN ROTEM ,  DEGANI OFIR

IPC: H03B20060101 ,  H03L20060101

公开(公告)号：EP2795790A4

公开(公告)日：2015-07-29

申请号：EP11878290

申请日：2011-12-19

Applicant: INTEL CORP

Inventor： ASHCKENAZI ORI ,  BANIN ROTEM ,  DEGANI OFIR

IPC: H03B5/12

CPC classification number: H03B5/1212 ,  H03B5/1228 ,  H03B5/124 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/1296

Abstract: Embodiments provide a voltage controlled oscillator (VCO) having reduced single-ended capacitance. In one embodiment, the VCO may include a transformer, a capacitor bank, and a gain stage. The transformer may include a primary inductor and a secondary inductor, and the secondary inductor may be inductively coupled to the primary inductor. The capacitor bank may be coupled to the secondary inductor and may provide a majority of a total capacitance of the VCO. The gain stage may be coupled to the primary inductor and configured to receive a supply signal and to drive a differential current in the primary inductor, thereby inducing an output signal across the secondary inductor having a frequency equal to a resonant frequency of the VCO.