Spread spectrum modulating device

Details Spread spectrum modulating device Spread spectrum modulating device

1992-01-31

1993-04-20

Barron, Jr., Gilberto

Pulse or digital communications

Repeaters

Testing

H04L 2704

Patent

active

052048772

ABSTRACT:
In a spread spectrum modulating device according to the present invention transmission data are converted into parallel data by a serial-parallel converting circuit, which are held by a latch circuit and assign upper digit addresses.
Lower digit addresses in the memory are assigned by a counter.
Parallel data outputted by the memory are converted into analogue signals by a D/A converter, which analogue signals are multiplied by a carrier by a multiplier to obtain a spread spectrum signal.
Owing to the construction described above, a simple and small scale construction can be realized for the spread spectrum modulating device.

REFERENCES:
patent: 4308617 (1981-12-01), German, Jr.
patent: 4365338 (1982-12-01), McRae et al.
patent: 4494238 (1985-01-01), Groth, Jr.
patent: 4930140 (1990-05-01), Cripps et al.
patent: 5005169 (1991-04-01), Bronder et al.
patent: 5056108 (1991-10-01), Lund
patent: 5063571 (1991-11-01), Vancraeynest

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