Harmonic frequency selecting circuit

Details Harmonic frequency selecting circuit Harmonic frequency selecting circuit

1989-06-05

1990-01-30

LaRoche, Eugene R.

Oscillators

Combined with particular output coupling network

Space discharge or unilaterally conductive device in output...

331 77, H03B 100

Patent

active

048976180

ABSTRACT:
A harmonic frequency selecting circuit is provided that simply and effectively provides a desired harmonic frequency output signal and that eliminates the need for frequency multiplier circuits. The harmonic frequency selecting circuit includes an oscillator circuit for generating a fundamental frequency signal and a plurality of harmonic frequency signals of the fundamental frequency signal. A phase modulator circuit is coupled to the oscillator circuit for selectively variably attenuating the generated fundamental and harmonic frequency signals. A bandpass filter circuit is coupled to the phase modulator circuit for selecting a predetermined harmonic frequency output signal.

REFERENCES:
patent: 4258436 (1981-03-01), Campbell
patent: 4723113 (1988-02-01), Marcoux

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