A broadband 5-bit CMOS step attenuator in small area with low insertion loss

IEICE Electronics Express

Yanlong Zhang¹  Yiqi Zhuang¹  Zhenrong Li¹  Xiaojiao Ren¹  Xing Quan² 

[1] School of Microelectronics, Xidian University;School of Mechano-Electronic Engineering, Xidian University

关键词: attenuator;    step attenuator;    broadband;    low chip area;    low insertion loss;   

DOI  :  10.1587/elex.11.20140216

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(6)Cited-By(1)A broadband 5-bit CMOS step attenuator in small area with low insertion loss is presented in this paper, which is implemented with three independent attenuation modules and two compact T-type attenuation networks. Two of the independent modules are switched π-type, and the other is bridged-T type. The compact T-type attenuation networks share the series branches with the adjacent modules to decrease the chip area and insertion loss. The proposed attenuator has a maximum attenuation range of 0�?31 dB with 1 dB-increase at the operational frequency range of 5�?20 GHz and consumes a layout area cost of 0.44 mm2. The insertion loss is less than 8.7 dB. The RMS insertion amplitude and phase error are less than 0.45 dB and 5.7°, respectively.

【 授权许可】

Unknown