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公开(公告)号:US09166540B2
公开(公告)日:2015-10-20
申请号:US14049588
申请日:2013-10-09
Applicant: Broadcom Corporation
Inventor: Giuseppe Cusmai , Vijayaramalingam Periasamy , Xi Chen , Ramon Alejandro Gomez
CPC classification number: H03F3/2171 , H03F1/22 , H03F1/26 , H03F1/34 , H03F1/56 , H03F3/19 , H03F3/245 , H03F2200/123 , H03F2200/151 , H03F2200/498
Abstract: A system includes a weighting element, a transconductance circuit, a feedback loop, and an auxiliary loop. In some implementations, the transconductance circuit may accept an input and provide a first portion of an output for amplification at a variable amplification level to generate an amplifier output. The feedback loop may provide a portion of the amplifier output as a first feedback to the input. The first feedback may be associated with an impedance that may vary with the amplification level. The auxiliary loop may provide a second feedback to the input to reduce the dependence of the impedance on the amplification level.
Abstract translation: 系统包括加权元件,跨导电路,反馈回路和辅助回路。 在一些实现中,跨导电路可以接受输入并提供输出的第一部分用于以可变放大电平进行放大以产生放大器输出。 反馈回路可以将放大器输出的一部分提供给输入的第一反馈。 第一反馈可能与可能随放大电平变化的阻抗相关联。 辅助回路可以向输入端提供第二反馈以减少阻抗对放大电平的依赖性。
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公开(公告)号:US20150084690A1
公开(公告)日:2015-03-26
申请号:US14049588
申请日:2013-10-09
Applicant: Broadcom Corporation
Inventor: Giuseppe Cusmai , Vijayaramalingam Periasamy , Xi Chen , Ramon Alejandro Gomez
CPC classification number: H03F3/2171 , H03F1/22 , H03F1/26 , H03F1/34 , H03F1/56 , H03F3/19 , H03F3/245 , H03F2200/123 , H03F2200/151 , H03F2200/498
Abstract: A system includes a weighting element, a transconductance circuit, a feedback loop, and an auxiliary loop. In some implementations, the transconductance circuit may accept an input and provide a first portion of an output for amplification at a variable amplification level to generate an amplifier output. The feedback loop may provide a portion of the amplifier output as a first feedback to the input. The first feedback may be associated with an impedance that may vary with the amplification level. The auxiliary loop may provide a second feedback to the input to reduce the dependence of the impedance on the amplification level.
Abstract translation: 系统包括加权元件,跨导电路,反馈回路和辅助回路。 在一些实现中,跨导电路可以接受输入并提供输出的第一部分用于以可变放大电平进行放大以产生放大器输出。 反馈回路可以将放大器输出的一部分提供给输入的第一反馈。 第一反馈可能与可能随放大电平变化的阻抗相关联。 辅助回路可以向输入端提供第二反馈以减少阻抗对放大电平的依赖性。
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