High accuracy sweep oscillator system

Details High accuracy sweep oscillator system High accuracy sweep oscillator system

1976-01-23

1977-01-04

Kominski, John

Oscillators

With frequency adjusting means

Cyclic frequency sweeping means

328186, 331 2, H03B 2300

Patent

active

040017265

ABSTRACT:
A voltage controlled sweep oscillator system which is stepped in frequency, avoiding transitional frequencies. Only discrete frequencies are provided by dividing the system into two segments wherein each segment comprises a voltage-controlled oscillator (VCO) in a phase-locked loop. A multiplexer provides one VCO signal to the output while the other VCO is stepping its frequency, and vice versa. Frequency control in each segment is achieved by comparing the divided output of a VCO with a reference frequency signal and making adjustments to cancel any errors that may appear.

REFERENCES:
patent: 3144623 (1964-08-01), Steiner
patent: 3364437 (1968-01-01), Loposer et al.
Hewlett Packard JN vol. 23, No. 11, July 1972, "The Incremental Sweep Gentor" by Charles A. Kingsford-Smith.

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