Title :
Variable bandwidth active filter which simulates the response of mutually coupled circuits
Abstract :
A variable bandwidth active filter has been designed by realizing a transfer function similar to that of mutually coupled resonant circuits. The circuit provides approximately a 5:1 variation in 3-dB bandwidth while maintaining the peak magnitude constant within ±1.4 dB.
Keywords :
Active filters; Band pass filters; Bandwidth; Circuit simulation; Coupling circuits; Frequency response; Mutual coupling; RLC circuits; Resistors; Transfer functions;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1971.8093
