Frequency synthesizer extending method and apparatus

Details Frequency synthesizer extending method and apparatus Frequency synthesizer extending method and apparatus

1978-12-21

1981-01-20

Heyman, John S.

H03B 1900

Patent

active

042465400

ABSTRACT:
An apparatus and method for extending the frequency range of a synthesizer r signal generator upward by several orders of multiplication. The basic stability of the synthesizer or generator is maintained at the higher frequency output. The output band of frequencies from a frequency synthesizer is processed through a homodyne multiplier and multiplied. The multiplied output is coupled to a power divider. The divider output is coupled to bandpass filters allowing selection of harmonic multiples from overlapping frequency bands to be made. A low pass filter in the circuit allows reduction in harmonics and higher order frequencies.

REFERENCES:
patent: 2354800 (1944-08-01), Deal
patent: 2894133 (1959-07-01), Bolie
patent: 3495158 (1970-02-01), Garnett et al.
patent: 3628154 (1971-12-01), Weill

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