Invention Grant
US07656230B2 Quadrature output low noise transconductance amplifier having differential input 有权
具差分输入的正交输出低噪声跨导放大器

  • Patent Title: Quadrature output low noise transconductance amplifier having differential input
  • Patent Title (中): 具差分输入的正交输出低噪声跨导放大器
  • Application No.: US12053249
    Application Date: 2008-03-21
  • Publication No.: US07656230B2
    Publication Date: 2010-02-02
  • Inventor: Russell Fagg
  • Applicant: Russell Fagg
  • Applicant Address: US CA San Diego
  • Assignee: QUALCOMM, Incorporated
  • Current Assignee: QUALCOMM, Incorporated
  • Current Assignee Address: US CA San Diego
  • Agent Sandra L. Godsey; William M. Hooks
  • Main IPC: H03F3/45
  • IPC: H03F3/45
Quadrature output low noise transconductance amplifier having differential input
Abstract:
A device for providing low noise transconductance amplification is presented. The device includes a PMOS transconductance section configured to receive a differential RF input signal, a PMOS cascode section coupled to the PMOS transconductance section, an NMOS transconductance section configured to receive the RF differential input signal, and an NMOS cascode section coupled to the NMOS transconductance section, where the PMOS and NMOS cascode sections provide a differential quadrature output signal and a differential in-phase output signal. A method for amplifying an RF signal is also presented. The method includes receiving a differential RF input signal, converting the differential RF input signal into current signals, buffering the current signals to provide a differential quadrature output signal and a differential in-phase output signal.
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