Apparatus for Reducing Intermodulation Distortion in a Cdma2000 System
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United States of America Patent
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Issued Date -
Sep 6, 2007
app pub date -
May 28, 2004
filing date -
May 29, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to an apparatus for minimizing intermodulation of local signals in a transceiver when adjacent frequencies are used as the local signals in a transceiver board having more than two built-in synthesizers. The apparatus comprises: a first mixer for mixing a first signal having a frequency to be lowered and a lower side local signal in a low frequency band and for outputting a first mixed signal; and a second mixer for mixing a second signal having a frequency to be lowered and an upper side local signal in a high frequency band and for outputting a second mixed signal, wherein the frequency of the second signal is adjacent to the frequency of the first signal, and the upper side local signal has a higher frequency than the lower side local signal.
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