An integrated LMS adaptive filter of TX leakage for CDMA receiver front ends
An integrated LMS adaptive filter of TX leakage for CDMA receiver front ends
复制标题
用于 CDMA 接收机前端的 TX 泄漏集成 LMS 自适应滤波器
DOI：
10.1109/rfic.2005.1489640
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
San Diego
中科院分区：
文献类型：
--
作者：
V. Aparin;Gary Ballantyne;Charlie Persics;San Diego
本文介绍了CDMA接收机中TX泄漏自适应滤波器的理论和实际实现。该滤波器使用连续时间信号数据LMS算法。它被设计为0.25 /spl μ/m CMOS蜂窝频带接收器的一部分。它实现了28-30 dB的TX泄漏最大抑制，这受到LNA输出的参考信号泄漏的限制。加入滤波器后，低噪声放大器的噪声系数和增益分别下降了1.3dB和1.7dB。
The theory and practical implementation of an adaptive filter of the TX leakage in CDMA receivers are described. The filter uses a continuous-time signa-data LMS algorithm. It was designed as part of a 0.25 /spl mu/m CMOS cellular-band receiver. It achieved the maximum rejection of the TX leakage of 28-30 dB, which was limited by the reference signal leakage to the LNA output. The LNA NF and gain degraded by 1.3 dB and 1.7 dB respectively after adding the filter.