Title :
A highly linear second-order stage for 500-MHz third-order and fifth-order filters
Author :
Hadidi, Kh ; Eguchi, K. ; Matsumoto, T. ; Kobayashi, H.
Author_Institution :
Dept. of Electr. Eng., Urmia Univ., Iran
Abstract :
Conventional continuous-time filters employ transconductance stages for realization. A second-order conventional filter requires four transconductors. This is due to the fact that transconductors are not considered (including their loading capacitors) first order stages instead of second-order ones, as they really are. Thus, frequency of operation is severely restricted. In the new structure we use otherwise parasitic poles to realize a single stage second-order filter. Simulation results for the designed filters show 500 MHz -3 dB third and fifth-order low-pass performance. Also, simulated THD for a 600 mVp-p, 95 MHz input signal is -52 dB
Keywords :
CMOS analogue integrated circuits; UHF filters; continuous time filters; linear network synthesis; low-pass filters; transfer functions; 500 MHz; continuous-time filters; fifth-order filters; highly linear second-order stage; low-pass performance; parasitic poles; single stage design; third-order filters; transconductor; Band pass filters; Bandwidth; Capacitors; Circuits; Frequency; Low pass filters; Nonlinear filters; Transconductance; Transconductors; Transfer functions;
Conference_Titel :
Electronics, Circuits and Systems, 1998 IEEE International Conference on
Conference_Location :
Lisboa
Print_ISBN :
0-7803-5008-1
DOI :
10.1109/ICECS.1998.814009
