发明授权
- 专利标题: High bandwidth equalizer and limiting amplifier
- 专利标题(中): 高带宽均衡器和限幅放大器
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申请号: US13567721申请日: 2012-08-06
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公开(公告)号: US09136904B2公开(公告)日: 2015-09-15
- 发明人: Tamer Ali , Ali Nazemi , Namik Kocaman
- 申请人: Tamer Ali , Ali Nazemi , Namik Kocaman
- 申请人地址: US CA Irvine
- 专利权人: Broadcom Corporation
- 当前专利权人: Broadcom Corporation
- 当前专利权人地址: US CA Irvine
- 代理机构: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- 主分类号: H04L25/06
- IPC分类号: H04L25/06 ; H04B3/04 ; H04B3/14 ; H04L25/03 ; H04L27/00
摘要:
Embodiments of the present disclosure enable bandwidth extension of receiver front-end circuits without the use of inductors. As a result, significantly smaller and cheaper receiver implementations are made possible. In an embodiment, bandwidth extension is achieved by virtue of very small floating capacitors that are coupled around amplifier stages of the receiver front-end circuit. Each of the capacitors is configured to generate a negative capacitance for the preceding stage (e.g., equalizer or amplifier), thus extending the bandwidth of the preceding stage. A capacitively-degenerated cross-coupled transistor pair allows bandwidth extension for the final (e.g., amplifier) stage. Embodiments further enable DC offset compensation with the use of a digital feedback loop. The feedback loop can thus be turned on/off as needed, reducing power consumption.
公开/授权文献
- US20140036982A1 High Bandwidth Equalizer and Limiting Amplifier 公开/授权日:2014-02-06
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