Method and apparatus for generating multiple frequency tones usi

Details Method and apparatus for generating multiple frequency tones usi Method and apparatus for generating multiple frequency tones usi

1992-07-10

1994-04-26

Grimm, Siegfried H.

Oscillators

Beat frequency

328 17, 331 60, 331 76, H03B 2101

Patent

active

053070291

ABSTRACT:
Generation of multiple, harmonically related frequency outputs is achieved using a digital asymmetrical harmonic waveform generator, such as a high speed digital frequency divider, for example. The digital frequency divider is used with a division ratio that provides a nonsymmetrical waveform that generates a fundamental and odd and even harmonics of the fundamental derived from a reference frequency signal. The harmonically related frequency outputs from the digital frequency divider may be buffered, filtered, and mixed with the reference frequency signal to obtain a series of clean, single frequency tones suitable for use as frequency conversion local oscillator signals. The result is a small, low power, low cost multiple frequency tone generator.

REFERENCES:
patent: 3668327 (1972-06-01), Euchner et al.
patent: 3777271 (1973-12-01), Telewski

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