Invention Application
WO2014150035A2 APPARATUS AND METHOD FOR REDUCING PHASE NOISE IN NEAR FIELD COMMUNICATION DEVICE SIGNALING 审中-公开
减少近场通信设备信号中的相位噪声的装置和方法

  • Patent Title: APPARATUS AND METHOD FOR REDUCING PHASE NOISE IN NEAR FIELD COMMUNICATION DEVICE SIGNALING
  • Patent Title (中): 减少近场通信设备信号中的相位噪声的装置和方法
  • Application No.: PCT/US2014/021939
    Application Date: 2014-03-07
  • Publication No.: WO2014150035A2
    Publication Date: 2014-09-25
  • Inventor: YANG, EugeneKANG, EunmoSABOURI, Faramarz
  • Applicant: QUALCOMM INCORPORATED
  • Applicant Address: Attn: International IP Administration 5775 Morehouse Drive San Diego, California 92121-1714 US
  • Assignee: QUALCOMM INCORPORATED
  • Current Assignee: QUALCOMM INCORPORATED
  • Current Assignee Address: Attn: International IP Administration 5775 Morehouse Drive San Diego, California 92121-1714 US
  • Agency: BINDSELL, James J. et al.
  • Priority: US13/841,155 20130315
  • Main IPC: H03D3/00
  • IPC: H03D3/00
APPARATUS AND METHOD FOR REDUCING PHASE NOISE IN NEAR FIELD COMMUNICATION DEVICE SIGNALING
Abstract:
A method for communication between near field communication (NFC) devices includes generating a transmission signal, an in-phase local oscillator signal, and a quadrature local oscillator signal from edges of an input clock signal. The method further includes mixing a load modulated signal with the in-phase local oscillator signal to generate an in-phase baseband signal. The method further includes mixing the load modulated signal with the quadrature local oscillator signal to generate a quadrature baseband signal. The method further includes adjusting a phase delay of at least one of the in-phase local oscillator signal or the quadrature local oscillator signal in response to a first signal strength of the in-phase baseband signal and a second signal strength of the quadrature baseband signal.
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