A Harmonic Rejecting N-Path Filter with Harmonic Gain Calibration Technique

被引：0

作者：

Bu, Ran ^{[1
]}

Jin, Jing ^{[1
]}

Yang, Zhaolin ^{[1
]}

Guo, Yuekang ^{[1
]}

Zhou, Jianjun ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Micro Nano Elect, Ctr Anal RF Integrated Circuits CARFIC, Shanghai 200240, Peoples R China

来源：

CIRCUITS SYSTEMS AND SIGNAL PROCESSING | 2022年 / 41卷 / 12期

基金：

上海市自然科学基金;

关键词：

N-path filter; Filtering by aliasing; Band-pass filter; Harmonic rejection; High-Q; Tunable filter; RECEIVER FRONT-END; DESIGN;

D O I：

10.1007/s00034-022-02118-z

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, an improved harmonic rejecting N-path filterwith a circuit-level structure is proposed. A different set of mixing functions is introduced to conventional Npath filters. Systematic analysis shows that the mixing functions have the benefits of harmonic rejection at the radio frequency node. An 8-path circuit-level structure is proposed, and a harmonic gain calibration technique is introduced to calibrate the errors due to the process variation and mismatch. The proposed 8-path filter is designed and simulated under the 65-nm CMOS technology and achieves 17-29 dB gain with a 2nd harmonic rejection ratio of 24-31 dB, 3rd-6th harmonic rejection ratio of 35-60 dB, a frequency range of 0.1-1GHz, and a noise figure of 3.8-4.9dB.

引用

收藏

页码：6672 / 6693

页数：22

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