Narrow-band filter having a variable center frequency

Details Narrow-band filter having a variable center frequency Narrow-band filter having a variable center frequency

1994-02-10

1996-02-13

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

327554, 327 45, 330305, 377 52, H04B 110

Patent

active

054914531

ABSTRACT:
In a narrow-band filter for filtering an input signal having a predetermined frequency and comprising first through n-th low-pass filters (13-1 to 13-n) which are connected in parallel to one another, a switching circuit time divisionally connects the first through the n-th low-pass filters between input and output terminals (11, 12). The first through the n-th low-pass filters, thereby, time divisionally filters the input signal for first through n-th filtering durations, respectively. A control circuit (30) is supplied with a frequency designation signal designating the predetermined frequency and controls the switching circuit to change at least one of the first through the n-th filtering durations in accordance with the frequency designation signal.

REFERENCES:
patent: 3857104 (1974-12-01), Sacks
patent: 4502049 (1985-02-01), Atkinson
patent: 5206549 (1993-04-01), Suzuki et al.
patent: 5313509 (1994-05-01), Tomita

Affiliated with

Also associated with

Rating

Narrow-band filter having a variable center frequency does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Narrow-band filter having a variable center frequency, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Narrow-band filter having a variable center frequency will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-242955