Frequency converting apparatus

Details Frequency converting apparatus Frequency converting apparatus

1988-05-25

1989-08-08

Wong, Peter S.

Electric power conversion systems

Frequency conversion without intermediate conversion to d.c.

370 70, 455190, 455208, H02M 500

Patent

active

048558940

ABSTRACT:
A frequency converting apparatus including a sample circuit and a bandpass filter wherein an input analog signal is sampled at predetermined periods only for predetermined time intervals to produce or increase the harmonic components of the original analog signal, a desired frequency component is extracted through the bandpass filter from the harmonic components to thereby convert the original signal having a particular frequency band to a signal having a higher-frequency band.

REFERENCES:
patent: 3676598 (1972-07-01), Kurth
patent: 3808412 (1974-04-01), Smith
patent: 4103110 (1978-07-01), Picquendar et al.
patent: 4214212 (1980-07-01), Dipietromaria
patent: 4373209 (1983-02-01), Kaneda
patent: 4435841 (1984-03-01), Dobrovolny
patent: 4442540 (1984-04-01), Allen

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