Signal processing circuit and ultrasound doppler apparatus
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United States of America Patent
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Mar 16, 2004
Grant Date -
Sep 19, 2002
app pub date -
Mar 14, 2002
filing date -
Mar 15, 2001
priority date (Note) -
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Abstract
In order to arrange continuous wave signal paths using fewer switches, a plurality of amplifying circuits 602 for respectively amplifying a plurality of continuous wave input signals, and outputting each respective pair of amplified signals that have mutually opposite phases for each continuous wave input signal; a plurality of selecting circuits 604, each of which selects one signal of the pair of amplified signals from each of the plurality of amplifying circuits; and a matrix switch 608 employing the output signals from the plurality of selecting circuits as input signals are provided.
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