Title :
100MHz, 6th order, leap-frog gm-C high Q bandpass filter and on-chip tuning scheme
Author :
Moritz, James ; Sun, Yichuang
Author_Institution :
Sch. of Electron., Commun. & Electr. Eng., Hertfordshire Univ., Hatfield
Abstract :
A 100MHz centre frequency, 10MHz bandwidth 6th order Butterworth bandpass filter using a leap-frog gm-C structure is described. Fully differential Nauta OTAs are used in the design, which include compensation of parasitic output resistance and feed-forward effects to obtain high Q. A mixed-signal, on-chip tuning system based on Dishal´s method is described. The filter and tuning system have been simulated using Mosis 0.18mm BSIM 3v3 models and PSpice
Keywords :
Butterworth filters; Q-factor; VHF filters; band-pass filters; circuit tuning; operational amplifiers; 0.18 mm; 10 MHz; 100 MHz; Butterworth filter; Dishal method; Mosis BSIM 3v3 models; PSpice; bandpass filter; differential Nauta OTA; feedforward effects; high Q filter; leap-frog gm-C filter; on-chip tuning scheme; operational transconductance amplifier; parasitic output resistance; Band pass filters; Bandwidth; Capacitors; Circuit optimization; Coupling circuits; Frequency; Resonator filters; Transceivers; Tuning; Virtual prototyping;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1693101
