发明授权
- 专利标题: VSWR compensation circuits for RF transmit chain
- 专利标题(中): 用于射频发射链的VSWR补偿电路
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申请号: US13054798申请日: 2009-07-22
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公开(公告)号: US08180306B2公开(公告)日: 2012-05-15
- 发明人: Frederic Francois Villain , Benoit Feron
- 申请人: Frederic Francois Villain , Benoit Feron
- 申请人地址: NL Eindhoven
- 专利权人: NXP B.V.
- 当前专利权人: NXP B.V.
- 当前专利权人地址: NL Eindhoven
- 优先权: EP08290720 20080723
- 国际申请: PCT/IB2009/053191 WO 20090722
- 国际公布: WO2010/010525 WO 20100128
- 主分类号: H04B1/04
- IPC分类号: H04B1/04 ; H03G3/10
摘要:
The present invention provides a method and apparatus for compensating the output of a transmitter stage (50) of a communications system. A communications apparatus has a transmitter stage (50) providing a variable control voltage which varies the power of the transmitter stage. The impedance at the output of the transmitter stage. (50) varies as the power varies. A control generation circuit compares a reference voltage to the variable control voltage to produce a control signal (VvswrC). A compensated load (40) coupled to the output of the transmitter stage (50) has active component (s) whose' impedance varies in response to the control signal (VvsweC) so as to compensate for the impedance at the output of the transmitter stage (50).
公开/授权文献
- US20110130104A1 VSWR COMPENSATION CIRCUITS FOR RF TRANSMIT CHAIN 公开/授权日:2011-06-02
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