发明授权
US08149955B2 Single ended multiband feedback linearized RF amplifier and mixer with DC-offset and IM2 suppression feedback loop
有权
单端多波段反馈线性化RF放大器和混频器,具有直流偏移和IM2抑制反馈回路
- 专利标题: Single ended multiband feedback linearized RF amplifier and mixer with DC-offset and IM2 suppression feedback loop
- 专利标题(中): 单端多波段反馈线性化RF放大器和混频器,具有直流偏移和IM2抑制反馈回路
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申请号: US12164142申请日: 2008-06-30
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公开(公告)号: US08149955B2公开(公告)日: 2012-04-03
- 发明人: Tobias Tired
- 申请人: Tobias Tired
- 申请人地址: SE Stockholm
- 专利权人: Telefonaktiebolaget L M Ericsson (publ)
- 当前专利权人: Telefonaktiebolaget L M Ericsson (publ)
- 当前专利权人地址: SE Stockholm
- 代理机构: Potomac Patent Group PLLC
- 主分类号: H04L25/06
- IPC分类号: H04L25/06 ; H04B1/26 ; H03L5/00 ; H03F3/45
摘要:
A receiver arrangement includes a single ended multiband feedback amplifier, at least one single ended input, differential output mixer arrangement including a main mixer and a trim mixer, and a mixer feedback loop circuit configured to receive differential output signals generated by the mixer arrangement. The mixer feedback loop circuit generates a feedback signal based on the received differential output signals and provides the feedback signal to the mixer arrangement to minimize DC-offset and second order intermodulation products. The single ended multiband feedback amplifier may include an input stage and a programmable resonance tank circuit connected to the input stage for suppressing downconverted noise from harmonics of the LO-frequency, and a configurable feedback net that shapes the frequency response of a feedback loop including the feedback net based on a band operation of the single ended multiband feedback amplifier.
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