A linearization technique for active mixers in zero-IF receivers with inherent balun

IEICE Electronics Express

Mahdi Barati¹  Mohammad Yavari¹ 

[1] Integrated Circuit Design Laboratory, Department of Electrical Engineering, Amirkabir University of Technology

关键词: Intermodulation;    Zero-IF;    Gilbert-cell;    IIP2;    IIP3;    NF;   

DOI  :  10.1587/elex.8.2080

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(5)A new technique with two different structures for linearization of active mixers in zero-IF receivers is presented. The proposed technique improves the IIP2 more than 20dB by removing the transconductance common mode current at the mixer's output and IIP3 more than 5dB in comparison with a basic Gilbert-cell mixer at equal conversion gain. Also, this technique allows us to use a single-ended input in a fully differential structure without needing a bulky and noisy balun. These improvements are achieved at the cost of 0.8dB increase in NF and also 0.6 mA more current dissipation in one structure.

【 授权许可】

Unknown