Digital tank circuit

Details Digital tank circuit Digital tank circuit

1985-09-04

1988-07-05

Harkcom, Gary V.

Boots, shoes, and leggings

364745, G06F 738

Patent

active

047559616

ABSTRACT:
A digital tank circuit, having a center frequency f.sub.0, which includes a circuit that samples an analog input signal at a predetermined sampling interval and converts the sampled signal into a binary code as well as a digital filter that is responsive to the binary code and has a gain characteristic with a sharp peak at the center frequency. The digital filter is implemented without multipliers to provide a transfer function given by ##EQU1## where (l) is an integer and (n) is the number of bits in the code representing each sample. Provision also is made to cancel rounding off errors generated on the filter.

REFERENCES:
patent: 3599108 (1981-08-01), Gardner
patent: 3798560 (1974-03-01), Taylor
patent: 4034196 (1977-07-01), Butterweck et al.
patent: 4317092 (1982-02-01), Potter
patent: 4326261 (1982-04-01), Peoples
patent: 4356558 (1982-10-01), Owen et al.
patent: 4569030 (1986-02-01), Butterweck et al.
patent: 4573135 (1986-02-01), Dieterich
patent: 4584600 (1986-04-01), Baker
Peled et al., "A New Hardware Realization of Digital Filters"; IEEE Trans. Acoustics, Speech And Signal Processing, ASSP-22 (6) pp. 456-462; Dec. 1974.

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