发明授权
- 专利标题: Transmitter signal injection compensation
- 专利标题(中): 变送器信号注入补偿
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申请号: US12551495申请日: 2009-08-31
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公开(公告)号: US08638836B2公开(公告)日: 2014-01-28
- 发明人: Pallab Midya , Rakers L Patrick , William J Roeckner
- 申请人: Pallab Midya , Rakers L Patrick , William J Roeckner
- 申请人地址: US TX Austin
- 专利权人: Freescale Semiconductor, Inc.
- 当前专利权人: Freescale Semiconductor, Inc.
- 当前专利权人地址: US TX Austin
- 代理机构: Patents and Licensing LLC
- 代理商 Daniel W Jeffernbruch
- 主分类号: H04B1/38
- IPC分类号: H04B1/38
摘要:
A transceiver mitigates signal leakage into a receive path from a transmit path. A subtraction circuit determines a difference between a receive signal and a compensation signal to produce a compensated receive signal prior to demodulation by a demodulator. An equalizer both amplitude adjusts and phase adjusts orthogonal baseband transmit signals based on the difference from the subtraction circuit to produce the compensation signal. A digital tuning circuit determines at least one amplitude adjust coefficient to be used by the equalizer. The equalizer can have a polarity switch or a variable attenuator or a variable delay.
公开/授权文献
- US20110051833A1 TRANSMITTER SIGNAL INJECTION COMPENSATION 公开/授权日:2011-03-03
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