Digital sweep generator

Details Digital sweep generator Digital sweep generator

1988-05-19

1990-07-24

Callahan, Timothy P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328181, 328 27, 307228, 307271, 307529, H03B 1900, H03K 1700

Patent

active

049437798

ABSTRACT:
A digital sweep generator includes a counter which receives a clock signal to generate a frequency output and an accumulator which sums the outputs of the counter at each clock. The value held by the accumulator is a quadratic function of time which is used as a phase representation to address a wave generator PROM. The PROM may be selectively coupled to different ranges of accumulator output to set the sweep rate.

REFERENCES:
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patent: 4417218 (1983-11-01), Berke
patent: 4484296 (1984-11-01), Treise et al.
patent: 4737720 (1988-04-01), Mills
patent: 4752902 (1988-06-01), Goldberg
Fogarty, "Digital Synthesizers Produce Wide Freq. Range from Single Source", Computer Design, Jul. 1975, pp. 100-102.
Tierney et al., "A Digital Frequency Synthesizer", IEEE Trans. on Audio & Electro Acoustics, vol. AU-19, No. 1, 3/71, pp. 48-57.
Jonah McLeod, "One-Chip Waveform Generator Cuts Purchase Price in Half," Electronics, Sep. 3, 1987, pp. 143-144.

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