Open AccessCharge‐domain switched‐ g m ‐ C CBPF using semi‐passive charge‐sharing technique
Author(s) -
Xu Y.,
Moon U.
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2016.0942
Subject(s) - switched capacitor , charge sharing , capacitor , cmos , electronic engineering , bandwidth (computing) , electrical engineering , band pass filter , computer science , topology (electrical circuits) , engineering , voltage , telecommunications
A highly reconfigurable charge‐domain switched‐ g m ‐ C complex bandpass filter (CBPF) topology that utilises a semi‐passive charge‐sharing technique is proposed. It uses only switches, capacitors, digital circuitry for three‐phase non‐overlapping clock generation and efficient g m ‐stages. Simulated in a 65 nm CMOS, a first‐order CBPF operating at 1 GS/s sampling rate demonstrates flexible tunability of the centre frequency and bandwidth with a highly passive/digital implementation. The presented filter architecture features excellent power efficiency and compatibility with process scaling.