Mixed domain mixed ratio frequency response sampling

Details Mixed domain mixed ratio frequency response sampling Mixed domain mixed ratio frequency response sampling

1990-07-13

1992-06-09

Strecker, Gerard R.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

With auxiliary means to condition stimulus/response signals

324605, 324615, 324 78D, 364553, 364572, 36472410, 341123, G01R 1900

Patent

active

051210657

ABSTRACT:
Aliasing and synchronization difficulties in determining transfer functions in mixed domain (analog and digital) systems are overcome by sampling the analog signal at an integer multiple of the digital signal, and zero filling the set of sampled digital data so that the sampled digital data corresponds to the more densely sampled analog data. By so doing, a single fixed frequency anti-alias filter in the analog channel can be used to avoid aliasing problems in mixed domain measurements over any span of frequencies, up to the entire passband of the filter.

REFERENCES:
patent: 4542336 (1985-09-01), Powell
patent: 4604717 (1986-08-01), Kaplan
patent: 4621254 (1986-11-01), Belcher
patent: 4638248 (1987-01-01), Schweickert
patent: 4700174 (1987-10-01), Sutherland
patent: 4715000 (1987-12-01), Premerlani
patent: 4740744 (1988-04-01), Lubarsky
patent: 4918637 (1990-04-01), Morton
patent: 4930513 (1990-06-01), Mayo

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