TY - GEN
T1 - A sub-threshold low-power integrated bandpass filter for highly-integrated spectrum analyzers
AU - Long, Gavin B.
AU - Ericson, M. Nance
AU - Britton, Charles L.
AU - Roehrs, Benjamin D.
AU - Farquhar, Ethan D.
AU - Frank, S. Shane
AU - Yen, Alec
AU - Blalock, Benjamin J.
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/11/23
Y1 - 2020/11/23
N2 - Low-power analog filter banks provide frequency analysis with minimal power and space requirements, making them viable solutions for integrated remote audio- and vibration-sensing applications. Compared with their digital counterparts, analog filter banks are better suited to achieve the lower power consumption necessary for IoT applications. In this work, the design and implementation of a sub-threshold complementary metal-oxide semiconductor (CMOS) integrated low-power tunable bandpass filter channel for signal spectrum analysis and signal discrimination is presented, including performance improvements to stability and precise matching between filter stages. The 8th-order filter channel achieves an effective Q-factor of 4.5 and dynamic range of 60 dB, has an operational frequency range from 2 kHz to 100 kHz, and consumes 256 µW nominally at the highest center frequency. An integrated analog Gm-C filter topology is selected for this application. Functionally, the high-Q bandpass filter transfer function is implemented via four cascaded 2nd-order filter cells and is fabricated in 130-nm 1.2-V CMOS technology, making it suitable for use in monolithic integrated spectral analysis (MISA) applications.
AB - Low-power analog filter banks provide frequency analysis with minimal power and space requirements, making them viable solutions for integrated remote audio- and vibration-sensing applications. Compared with their digital counterparts, analog filter banks are better suited to achieve the lower power consumption necessary for IoT applications. In this work, the design and implementation of a sub-threshold complementary metal-oxide semiconductor (CMOS) integrated low-power tunable bandpass filter channel for signal spectrum analysis and signal discrimination is presented, including performance improvements to stability and precise matching between filter stages. The 8th-order filter channel achieves an effective Q-factor of 4.5 and dynamic range of 60 dB, has an operational frequency range from 2 kHz to 100 kHz, and consumes 256 µW nominally at the highest center frequency. An integrated analog Gm-C filter topology is selected for this application. Functionally, the high-Q bandpass filter transfer function is implemented via four cascaded 2nd-order filter cells and is fabricated in 130-nm 1.2-V CMOS technology, making it suitable for use in monolithic integrated spectral analysis (MISA) applications.
KW - Analog integrated circuits
KW - Analog signal processing
KW - Bandpass filters
KW - CMOS integrated circuits
KW - Gm-C filters
KW - Programmable filters
KW - Spectral analysis
UR - http://www.scopus.com/inward/record.url?scp=85099469371&partnerID=8YFLogxK
U2 - 10.1109/ICECS49266.2020.9294964
DO - 10.1109/ICECS49266.2020.9294964
M3 - Conference contribution
AN - SCOPUS:85099469371
T3 - ICECS 2020 - 27th IEEE International Conference on Electronics, Circuits and Systems, Proceedings
BT - ICECS 2020 - 27th IEEE International Conference on Electronics, Circuits and Systems, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 27th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2020
Y2 - 23 November 2020 through 25 November 2020
ER -