Invention Application
US20020027475A1 Low-noise amplifier, in particular for a cellular mobile telephone 有权
低噪声放大器,特别是蜂窝移动电话

  • Patent Title: Low-noise amplifier, in particular for a cellular mobile telephone
  • Patent Title (中): 低噪声放大器,特别是蜂窝移动电话
  • Application No.: US09886852
    Application Date: 2001-06-21
  • Publication No.: US20020027475A1
    Publication Date: 2002-03-07
  • Inventor: Didier Belot
  • Applicant: STMicroelectronics S.A.
  • Applicant Address: FR Montrouge
  • Assignee: STMicroelectronics S.A.
  • Current Assignee: STMicroelectronics S.A.
  • Current Assignee Address: FR Montrouge
  • Priority: FR0009126 20000712
  • Main IPC: H03F003/45
  • IPC: H03F003/45
Low-noise amplifier, in particular for a cellular mobile telephone
Abstract:
The amplifier includes an input amplifier stage, an output amplifier stage cascode-connected with the input amplifier stage, and a load stage connected to the output stage. The load stage includes a plurality of circuits each including a capacitive component and an inductive component having a Q greater than 10, and having respective different resonant frequencies. All the gain curves respectively associated with all the circuits have, to within a stated tolerance, the same maximum gain value at the resonant frequencies. The gain curves respectively associated with two circuits having respective immediately adjacent resonant frequencies overlap below a threshold 3 dB, to within a stated tolerance, below the maximum gain value.
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