Photoconductive spread-spectrum communications system

Details Photoconductive spread-spectrum communications system Photoconductive spread-spectrum communications system

1995-09-21

1997-01-21

Chin, Wellington

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359111, 359145, 359180, 359189, 375200, H04B 1000, H04B 1500, H04K 100

Patent

active

055964389

ABSTRACT:
A photoconductive spread-spectrum communications system that includes a tsmitter and a receiver. The transmitter includes an oscillating laser, a Pockels' cell, a delay cell, a photoconductive switch, and an antenna for transmitting an electromagnetic spread-spectrum signal. The receiver includes an oscillating laser, a Pockels' cell, an antenna for receiving a spread-spectrum signal, a photoconductive switch, a filter, and a threshold detector for regenerating the signal contained within the spread-spectrum transmission.

REFERENCES:
patent: 4380391 (1983-04-01), Buser et al.
patent: 4441186 (1984-04-01), Erickson
patent: 5157542 (1992-10-01), Fitzmartin et al.
patent: 5264960 (1993-11-01), Glance
patent: 5301206 (1994-04-01), Ishigaki et al.
patent: 5499265 (1996-03-01), Dixon et al.
patent: 5499267 (1996-03-01), Ohe et al.
Withington et al., "An Impulse Radio Communications System", pp. 13-120.

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