Title :
High-order lowpass and bandpass elliptic log-domain ladder filters
Author :
Drakakis, Emmanuel M. ; Payne, A.J. ; Toumazou, Christofer ; Ng, A.E.J. ; Sewell, J.I.
Author_Institution :
Dept. of Electr. & Electron. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK
Abstract :
This paper reports a multitude of HSPICE simulation results corresponding to high-order (fifth, sixth and tenth) differential class-A log-domain lowpass and bandpass ladder filter topologies. The designs are elliptically approximated and were obtained by means of an appropriately extended version of the XFILTER filter compiler. The nondesirable effect of the BJT finite beta is shown; circuit modifications mitigating-to a certain extent-the device nonideality-induced impact are also reported
Keywords :
SPICE; active filters; band-pass filters; circuit simulation; elliptic filters; ladder filters; low-pass filters; BJT finite beta; HSPICE simulation results; XFILTER filter compiler; bandpass filters; circuit modifications; device nonideality-induced impact; differential class-A filters; elliptic log-domain ladder filters; high-order filters; lowpass filters; Band pass filters; Circuit simulation; Circuit topology; Educational institutions; Filtering; Frequency response; Linearity; Passband; Signal design; Signal processing;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921808
