Circuit for generating two closely adjacent frequencies

Details Circuit for generating two closely adjacent frequencies Circuit for generating two closely adjacent frequencies

1988-09-06

1990-02-27

Laroche, Eugene R.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural oscillators controlled

331 25, 331 57, H03L 700

Patent

active

049049550

ABSTRACT:
A circuit for generating two closely adjacent frequencies includes two oscillators each generating one of two closely adjacent frequencies. A PLL circuit is connected to the oscillators for regulating the frequencies. The PLL circuit performs a frequency comparison of the frequency generated by only one of the oscillators with a reference frequency to generate a frequency comparison output signal of the PLL circuit, and it regulates the frequencies of both of the oscillators as a function of the frequency comparison output signal of the PLL circuit.

REFERENCES:
patent: 4097816 (1978-06-01), Imazeki et al.

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