Integrated filter circuit

Details Integrated filter circuit Integrated filter circuit

1990-01-02

1991-09-24

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307521, 307498, 307355, 328127, 328167, H03H 1112, H03K 500

Patent

active

050516280

ABSTRACT:
An integrated filter having a controllable frequency response includes a pair of cascaded differential transconductance amplifiers with the differential outputs of the first one of the pair being coupled to the differential inputs of the second one via coupling resistors and the differential inputs of the first one being coupled to inputs of the filter via input coupling resistors. The differential outputs of the second transconductance amplifier are coupled both to outputs of the filter and are fed back to the respective differential inputs of the two amplifiers to provide multiple inputs such that the damping factor of the filter is controllable for adjusting the filter frequency transfer function by varying the ratio of the coupling resistor value to the feedback resistor value while the damping factor is independent of the natural resonant frequency of the filter. Series coupled integrating capacitors are coupled across the differential outputs of both pairs of amplifiers with the interconnection therebetween return to ground.

REFERENCES:
patent: 3538445 (1968-11-01), Brennen
patent: 4374335 (1983-02-01), Fukahori et al.
patent: 4602169 (1986-07-01), Shimizu
patent: 4644196 (1987-02-01), Flannagan
patent: 4710654 (1987-12-01), Saitoh et al.
patent: 4752741 (1988-06-01), Kim et al.
patent: 4806880 (1989-02-01), Laws

Affiliated with

Also associated with

Rating

Integrated filter circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrated filter circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated filter circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1698849