Title :
Robust high-pass and notch Gm-(grounded) C biquads: how many different topologies are there?
Author :
Prodanov, Vladimir I.
Author_Institution :
Bell Labs., Lucent Technol., Murray Hill, NJ, USA
Abstract :
This paper deals with Gm-C biquadratic filters that use grounded capacitors. We derive all practical HP and notch filter topologies that do not require critical component matching. The aim of this derivation was to discover new architectures. The result of this derivation is quite unexpected: there are only three distinct topologies (one notch and: two high-pass). None of them is particularly new because all reported in the literature biquad circuits are their embodiments
Keywords :
biquadratic filters; capacitors; high-pass filters; integrating circuits; network topology; notch filters; Gm-C biquadratic filters; HP filter; filter topologies; grounded capacitors; notch filter; robust architectures; Active filters; Band pass filters; Capacitors; Frequency; Matched filters; Prototypes; Robustness; Topology; Transconductors; Voltage;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921778
