Sine wave multiplication circuit and sine wave...

Details Sine wave multiplication circuit and sine wave... Sine wave multiplication circuit and sine wave...

2005-02-03

2009-12-08

Bullock, Jr., Lewis A (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical analog calculating computer

Particular function performed

C708S801000, C327S355000

Reexamination Certificate

active

07631030

ABSTRACT:
A sine wave multiplication circuit multiplies an analog input signal by n (n is an integer equal to or greater than 2) weighting coefficients each having a unique value. The polarity of the analog input signal multiplied by one of the n weighting coefficients is changed over. Further, changeover among the n weighting coefficients and of the polarity is performed after every sampling period equal to ½k (k is an integer, and 2k is equal to or greater than 6 but equal to or smaller than 4n) of one period of the sine wave signal by which the analog input signal is multiplied. As a result, a staircase waveform having 2n positive and negative stairs is generated while unnecessary harmonic wave components in the proximity of the sine wave signal by which the analog input signal is multiplied can be reduced.

REFERENCES:
patent: 3935439 (1976-01-01), Buss et al.
patent: 4084256 (1978-04-01), Engeler et al.
patent: 4156284 (1979-05-01), Engeler
patent: 4241320 (1980-12-01), Fausone et al.
patent: 4727333 (1988-02-01), Dieterich
patent: 63-165978 (1988-07-01), None
patent: 01-204510 (1989-08-01), None
Japanese Office Action issued on Oct. 31, 2006.
Gilbert, Barrie, “A Precise Four-Quadrant Multiplier with Subnanosecond Response”, IEEE Journal of Solid State Circuits, vol. SC-3, No. 4, Dec. 1968, pp. 365-373.

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