• Patent Title: Gm-boosted differential voltage-controlled oscillator (VCO)
  • Application No.: US16451589
    Application Date: 2019-06-25
  • Publication No.: US10938345B2
    Publication Date: 2021-03-02
  • Inventor: Yi Yin
  • Applicant: NXP USA, INC.
  • Applicant Address: US TX Austin
  • Assignee: NXP USA, INC.
  • Current Assignee: NXP USA, INC.
  • Current Assignee Address: US TX Austin
  • Priority: EP18179888 20180626
  • Main IPC: H03B5/12
  • IPC: H03B5/12 H03B5/18 H03K3/354
Gm-boosted differential voltage-controlled oscillator (VCO)
Abstract:
The present application relates to a differential Colpitts voltage-controlled oscillator (VCO) circuit, which comprises a pair of transistors with control terminals biased by a common biasing voltage and a pair of couplers arranged to cross-couple corrector/drain of the transistors and the base/gate of the differential transistors. The pair of couplers have a coupling factor kc, which used to enhance the transconductance of the transistor pair, therefore can be used for power consumption reduction and phase noise minimalization.
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