Delay-locked loop circuit in spread spectrum receiver

Details Delay-locked loop circuit in spread spectrum receiver Delay-locked loop circuit in spread spectrum receiver

1988-09-28

1991-10-29

Cangialosi, Salvatore

Pulse or digital communications

Repeaters

Testing

380 34, H04L 900

Patent

active

050621220

ABSTRACT:
Spread spectrum receiver includes a delay locked loop (DLL) circuit for holding the synchronization of a despread signal with a received spread spectrum signal. The DLL circuit comprises a subtracter for generating a signal representative of a subtraction between first and second correlation signals, a positive feedback amplifier for amplifying the subtraction representative signal and a window comparator for producing a lock signal when the subtraction representative signal is positioned within a window width.

REFERENCES:
patent: 4100498 (1978-07-01), Alsup et al.
"Spread Spectrum Communication System", by K. Tsukamoto, the Journal of the Institute of Television Engineers of Japan, vol. 33, No. 3, 1979, pp. 162-169.

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