Low cost binary phase shift keying modulation transmitter system

Details Low cost binary phase shift keying modulation transmitter system Low cost binary phase shift keying modulation transmitter system

1995-11-17

1999-01-12

Vo, Don N.

Pulse or digital communications

Repeaters

Testing

375308, 332104, H04B 1500, H04L 2720

Patent

active

058598693

ABSTRACT:
An improvement in spread spectrum modulator systems, and more particularly further improvements in spread spectrum BPSK, or Binary Phase Shift Keying, Modulation systems, the present invention contemplating the utilization of an exclusive OR logic gate to replace an RF mixer stage in the SS transmitter, thereby providing enhanced gain at a lower energy consumption, with lesser cost and suppressed carrier output when compared to prior systems, as well as compatibility with CMOS low power logic modulation drive circuitry. The present system teaches a new, superior, and less costly BPSK transmitter than contemplated by the prior art, providing a less complicated system while outputting increased gain over prior art modulators.

REFERENCES:
patent: 4979183 (1990-12-01), Cowart
patent: 5029180 (1991-07-01), Cowart
patent: 5119396 (1992-06-01), Sanderford, Jr.
patent: 5265120 (1993-11-01), Sanderford, Jr.
patent: 5303258 (1994-04-01), Nakamura
patent: 5357541 (1994-10-01), Cowart

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