Semiconductor integrated circuit device
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United States of America Patent
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May 11, 2010
Grant Date -
Mar 18, 2004
app pub date -
Sep 4, 2003
filing date -
Sep 13, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The semiconductor integrated circuit (RF IC) for a mobile telephone capable of transmitting/receiving the signals of plural bands reduces the DC offsets of the amplifiers located in the following stages of the mixers that demodulate or down-convert the reception signals. The invention scrambles the signal lines to transmit the outputs of the plural mixers that demodulate or down-convert the reception signals of different bands, so as to avoid the adjacent signal lines from making the same combination from the starting ends to the finishing ends.
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