A widely tunable active-RC complex filter for multi-mode wireless receivers with automatic frequency tuning

IEICE Electronics Express

Hongmin Wang¹  Min Lin¹  Shulong Sun¹  Ruoyu Wang¹ 

[1] Shanghai Institute of Microsystem And Information Technology, Chinese Academy of Sciences

关键词: complex filter;    multi-mode;    auto tuning;    Miller compensation;   

DOI  :  10.1587/elex.13.20160764

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(11)A 5th-order Chebyshev active-RC filter has been implemented in TSMC 0.13µ CMOS technology. With the feature of multi-mode, it has 8 different bandwidth modes including 6 Real Low-pass modes and 2 Complex band-pass modes for wireless sensor network applications. Combined with a special kind of Miller compensation method, the OTA’s stability is observably improved. Also, to eliminate the effect of temperature and process variation, an automatic frequency tuning scheme is applied. The filter measures a 0 dB gain and 0.9 dB ripple in passband. It also measures an input-referred noise ofand in-band-IIP3 of 25 dBm while consuming 15 mA current from 1.3 V supply. The tuning circuit has a precision of 2% and covers a range of 30%.

【 授权许可】

Unknown