Up/down spectrum scaling of signals

Details Up/down spectrum scaling of signals Up/down spectrum scaling of signals

1993-12-30

1996-01-02

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

324 7638, 364179, 381 34, G01R 23175

Patent

active

054811821

ABSTRACT:
A system for scaling down the spectrum of a composite signal by a factor in real time to a lower frequency, or for scaling up the spectrum of a composite signal by a factor in real time to a higher frequency is described. The spectrum up conversion and down conversion are achieved using Doppler effect analysis, switches, or sample and hold, analog to digital converters or equivalent sampling devices. As a source signal propagates over a transmission line having multiple delays, samples of the source signal are obtained at each delay and the samples are utilized to reconstruct the original source signal without losing any characteristics. The technique is well adapted for capturing single event signals.

REFERENCES:
patent: 4496974 (1985-01-01), Heitmann
patent: 4843465 (1989-06-01), Yuasa et al.
patent: 5351087 (1994-09-01), Christopher et al.
"Nanosecond Data Acquisition System", by McCraven and Epps, Sep. 14, 1961.
Oliver et al, Electronic Measurements and Instrumentation, 1971, pp. 398-407.

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