Demodulation of an intermediate frequency signal by a sigma-delta converter
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United States of America Patent
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Mar 31, 1998
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N/A
app pub date -
Mar 29, 1996
filing date -
Sep 10, 1993
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Abstract
A sigma-delta signal converter is implemented using switched capacitor switching elements in which a first switch (31) serves as a mixer (11). The output of the mixer is directed to the second input of an adder (16), and its second input is the feedback signal (f1) of the sigma-delta signal converter, which is also directed into a base-frequency output signal through a decimator (14) and low-pass filtering (15).
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