Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Analysis of complex waves
Patent
1983-03-07
1985-03-12
Tokar, Michael J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Analysis of complex waves
324 77B, 324 84, 328 56, 328151, G01R 2316
Patent
active
045047855
ABSTRACT:
A sampling spectrum analyzer provides instantaneous continuous wideband spectrum analysis to allow RF signals occurring simultaneously and spaced within the band to be displayed. An input signal is split and each resulting portion is passed down a tapped delay line, with samples at the taps of each line being processed by separate arithmetic units. The output of each arithmetic unit is applied to the taps of output delay lines which are similar to the input delay lines. Each arithmetic unit weights the input samples with a set of coefficients and sums the resulting signal in a prescribed manner, thus transforming the signal into the frequency domain, according to a discrete Fourier transform. The resulting sums are the real and imaginary terms of a signal which are vectorially added, resulting in a signal which is fed to the ordinate of a display having a swept time base representing frequency.
REFERENCES:
patent: 3305785 (1967-02-01), Carroll
patent: 4305159 (1981-10-01), Stromswold
patent: 4359690 (1982-11-01), Tucker et al.
Conway Larry J.
Tucker Trevor W.
Goldberg Edward
Her Majesty the Queen in right of Canada as represented by the
Lane Anthony T.
Murray Jeremiah G.
Tokar Michael J.
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