公开(公告)号：US20140329484A1

公开(公告)日：2014-11-06

申请号：US13875093

申请日：2013-05-01

Applicant: QUALCOMM Incorporated

Inventor： Wing-fat A Lau ,  Hajir Hedayati ,  Vladimir Aparin

IPC: H04B1/10

CPC classification number: H04B1/1027 ,  H03F1/26 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/372 ,  H04B1/109 ,  H04B1/12 ,  H04B1/30

Abstract: Techniques for providing a jammer-resistant noise-cancelling receiver front end with band-pass impedance matching and good power efficiency. In an aspect, the center frequency of the band-pass impedance matching advantageously tracks the local oscillator frequency. In an aspect, first and second receive signal paths are provided, with an R-C network coupled to the output of the second receive signal path. The resistance of the R-C network may be selected to provide band-pass impedance matching to the RF input signal. The current outputs of the first and second signal paths are combined using a trans-impedance amplifier (TIA). In an aspect, the TIA may be implemented using a dual input transconductor amplifier to further optimize the noise performance and power efficiency features of the disclosure.

Abstract translation: 用于提供具有带通阻抗匹配和良好功率效率的干扰抗噪声消除接收机前端的技术。 在一方面，带通阻抗匹配的中心频率有利地跟踪本地振荡器频率。 在一个方面，提供了第一和第二接收信号路径，其中R-C网络耦合到第二接收信号路径的输出。 可以选择R-C网络的电阻以向RF输入信号提供带通阻抗匹配。 使用跨阻放大器（TIA）组合第一和第二信号路径的电流输出。 在一方面，TIA可以使用双输入跨导放大器来实现，以进一步优化本公开的噪声性能和功率效率特征。