Smart noise generator

Details Smart noise generator Smart noise generator

1979-12-19

1981-01-27

Ng, Jin F.

Telecommunications

Interference signal transmission

331 78, 343 18E, H04K 300

Patent

active

042479460

ABSTRACT:
A frequency memory system having a smart noise component is receptive of an RF burst signal of a given frequency and of relatively short duration for determining the frequency and storing a signal of amplitude indicative of the given frequency and for producing by means of a voltage controlled oscillator (VCO) a signal at the given frequency of relatively long duration. The stored signal and a signal for amplitude corresponding to the actual frequency produced by VCO are utilized to produce an error signal to correct any error in the frequency of the signal produced by the VCO relative to the given frequency. Since the VCO is not capable of immediately accurately tracking the input frequency, a smart noise generator produces a signal of random amplitude which is added to the error signal to cause the VCO to produce at least a frequency component of its output signal which is equal to that of the input RF burst signal.

REFERENCES:
patent: 4017856 (1977-04-01), Wiegand
patent: 4063188 (1977-12-01), Mawhinney
patent: 4103236 (1978-07-01), Deserno et al.

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