发明授权
- 专利标题： Technique for suppressing noise in a transmitter device
- 专利标题（中）： 用于抑制发射机设备中的噪声的技术
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申请号： US13121228申请日： 2009-09-28
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公开(公告)号： US08755758B2公开(公告)日： 2014-06-17
- 发明人: Stefan Andersson , Kirill Kozmin , Fredrik Tillman
- 申请人： Stefan Andersson , Kirill Kozmin , Fredrik Tillman
- 申请人地址： SE Stockholm
- 专利权人： Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人： Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人地址： SE Stockholm
- 代理机构： Coats & Bennett, PLLC
- 优先权： EP08017151 20080929
- 国际申请： PCT/EP2009/062534 WO 20090928
- 国际公布： WO2010/034834 WO 20100401
- 主分类号： H04B1/04
- IPC分类号： H04B1/04
摘要：
A technique of suppressing noise in a transmitter device (300) is provided, wherein the transmitter device (300) comprises a baseband signal processing stage (301) operating at baseband frequency and comprising a modulator (316, 320) for converting a baseband signal into an RF signal, and an RF signal processing stage (301) operating at RF and comprising an amplifier (330). A method implementation of this technique comprises the steps performed in a feedback loop (333, 336) coupled around the amplifier (330) of tapping the RF signal processing stage downstream of the amplifier (330) to obtain an amplified RF signal comprising a baseband signal component and a noise component, downconverting the tapped RF signal to baseband frequency, removing the baseband signal component from the downconverted signal, upconverting the resulting signals still comprising the noise component to RF frequency and feeding the upconverted signal back to the RF signal processing stage upstream of the amplifier (330) thereby suppressing the noise component.
公开/授权文献
- US20110235553A1 Technique for Suppressing Noise in a Transmitter Device 公开/授权日：2011-09-29
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