Frequency measurement receiver with bandwidth improvement throug

Details Frequency measurement receiver with bandwidth improvement throug Frequency measurement receiver with bandwidth improvement throug

1991-07-05

1993-08-10

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

324 7655, 324 7647, 324 7682, 324 7678, 342196, 341123, 364485, G01R 2300

Patent

active

052352870

ABSTRACT:
This is a technique for extending the frequency range which employs a power divider having two outputs, one output being supplied to a first A/D converter, and the other output being supplied via a delay device to a second A/D converter. A processor receives the outputs of the two A/D converters. In operation, the input signal is subjected to a known delay .tau. and both original and delayed signals are sampled simultaneously. Both sampled signals are Fourier transformed and the phase and amplitudes calculated, using the expressions:

REFERENCES:
patent: 3708746 (1973-01-01), Willett
patent: 4336541 (1982-06-01), Tsui
patent: 4504785 (1985-03-01), Tucker
patent: 4633516 (1986-12-01), Tsui
patent: 4893266 (1990-01-01), Deem
patent: 5099194 (1992-03-01), Sanderson
patent: 5099243 (1992-03-01), Tsui
patent: 5109188 (1992-04-01), Sanderson

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