Multichannel generator

Details Multichannel generator Multichannel generator

1975-04-07

1976-05-11

Heyman, John S.

Oscillators

Relaxation oscillators

328 61, 331 1A, 331 25, H03B 1900

Patent

active

039567036

ABSTRACT:
Multichannel generator for at will generating any one of a plurality of channel frequencies in the GHz band which are spaced from one another by equal channel distances. The multichannel generator is constituted by a frequency synthesis device which comprises two phase-locked loops which each comprise an oscillator, a divider adjustable in discrete steps and a phase detector to which a reference frequency is applied. The adjustable dividers keep in step. One of the oscillators is coupled via a fixed divider and a mixer stage to the adjustable frequency divider included in the relevant loop. The signal injected into the mixer stage is derived from the other oscillator. The influence of the fixed divider on the value of the channel spacing is avoided by a particular relationship between the reference frequencies supplied to the phase detectors.

REFERENCES:
patent: 3331035 (1967-07-01), Strickholm
patent: 3665323 (1972-05-01), Peterson
patent: 3701027 (1972-10-01), Belton
patent: 3702441 (1972-11-01), Thrower

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