A Current-Mode, 30 dB Range with 0.5 dB Step, 0.1 to 6 GHz Attenuator for Wideband Receiver

被引：1

作者：

Xiang, Yangxin ^{[1
]}

Han, Chenyang ^{[1
]}

Wang, Cuixia ^{[1
]}

Wu, Jiangfeng ^{[1
]}

Chen, Yongzhen ^{[1
]}

机构：

[1] Tongji Univ, Sch Elect & Informat Engn, Shanghai, Peoples R China

来源：

2022 IEEE 65TH INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS 2022) | 2022年

关键词：

Digital step attenuator; RF attenuator; wideband; R-2R ladder; binary resistor array; digital pre-distortion; software-defined radio;

D O I：

10.1109/MWSCAS54063.2022.9859331

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, a wide band, current-mode attenuator designed for the attenuator-first wideband receiver in 28-nm CMOS technology is presented. The proposed attenuator combines both advantages of the R-2R network and the binary resistor array, achieving a 30 dB attenuation range with 0.5 dB per step from 100 MHz to 6 GHz. The step error is within +/- 0.1 dB thanks to the proposed structure. Compared with the previous design, the proposed attenuator's frequency response is not sensitive to the parasitic routing resistance at the virtual ground point. This enables the attenuator to achieve accurate attenuation even at 6 GHz. The S-11 parameter is below -10 dB over the whole operating frequency.

引用

页数：4

共 29 条

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