Linearizing circuit for a high frequency voltage controlled osci

Details Linearizing circuit for a high frequency voltage controlled osci Linearizing circuit for a high frequency voltage controlled osci

1981-06-19

1983-11-22

Miller, Stanley D.

Oscillators

With frequency adjusting means

Cyclic frequency sweeping means

307228, 328184, 358158, H03B 2300

Patent

active

044172184

ABSTRACT:
A circuit for linearizing the oscillator sweep output frequency signal of a oltage controlled oscillator is disclosed. The voltage controlled oscillator is driven by the output of an op amp, which amplifies and filters the output of a D/A converter. The D/A converter responds to preselected 8-bit words, stored in an EPROM, so as to produce a desired output frequency at each memory address. The addresses, in turn, are provided by a combination of gates, counters, input signals and a clock.

REFERENCES:
patent: 4039806 (1977-08-01), Fredriksson et al.
patent: 4129832 (1978-12-01), Neal et al.
patent: 4335442 (1982-06-01), Backe

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