Method and apparatus for eliminating harmonic skip

Details Method and apparatus for eliminating harmonic skip Method and apparatus for eliminating harmonic skip

1984-01-09

1987-03-03

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 83D, G01R 2314

Patent

active

046478477

ABSTRACT:
A method is provided to eliminate harmonic skip problems in a down-conversion system. The method makes use of the relationship between the frequency of the intermediate frequency signal and the harmonic number of the local oscillator signal with respect to the frequency of the frequency of the source signal. By monitoring and measuring corresponding changes in the intermediate frequency signal caused by predetermined changes in the frequency of the local oscillator signal, a determination of the proper local oscillator signal and the proper harmonic can be made using a processor. The proper frequency and harmonic can then be maintained by periodically checking the relationship between variables.

REFERENCES:
patent: 3714580 (1973-01-01), Close
patent: 3984770 (1976-10-01), Chu
patent: 4063169 (1977-12-01), Palmer
patent: 4135243 (1979-01-01), Peregrino
patent: 4345206 (1982-08-01), Skalka

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