Low cost binary phase shift keying modulation transmitter system
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United States of America Patent
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Jan 12, 1999
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app pub date -
Nov 17, 1995
filing date -
Nov 17, 1995
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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.
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