Realization of High Q Band Pass Filter Using Low Voltage Current Feedback Amplifiers
Parshotam. S. Manhas, K. Pal, Susheel Sharma, L.K. Mangotra and K.K.S. Jamwal
A new configuration for the realization of high-Q band pass filter employing a modified new low-voltage current feedback amplifier (CFA) is presented. The main parameters of the resulting high-Q band pass filter i.e., the center frequency and pole-Q can be independently adjusted. It is also shown that the filter sensitivities with respect to capacitors and resistors are low. The circuit uses grounded capacitors and is thus suitable for IC implementation. PSpice simulation results verify the theoretical analysis.
Keywords: Active filters; High-Q band pass filters; Current feedback amplifiers.