Digital subharmonic sampling down-converter

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United States of America Patent

PATENT NO 4888557
SERIAL NO

07335269

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Abstract

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A digital subharmonic sampling converter, for use in an analog IF signal demodulator and the like, includes: an analog-to-digital converter (ADC) means receiving the IF analog signal for conversion to a digital data stream by sampling at a sampling rate frequency substantially equal to 4/(2n+1) times the IF signal frequency, where n is an integer greater than zero. A digital mixer means is used to convert the sampled data to baseband. The interleaved sequential in-phase I data words and quadrature-phase Q data words are then sorted into a pair of concurrent I and Q data word streams.

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Patent Owner(s)

Patent OwnerAddress
LOCKHEED MARTIN CORPORATION6801 ROCKLEDGE DRIVE BETHESDA MD 20817-1877

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Puckette, IV Charles M Scotia, NY 2 269
Saulnier, Gary J Rexford, NY 30 854

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