Filter apparatus, multiplex device and associated method
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United States of America Patent
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May 10, 2016
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N/A
app pub date -
Jun 4, 2013
filing date -
Oct 11, 2012
priority date (Note) -
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Abstract
It is presented a filter apparatus comprising: a first frequency shifter arranged to accept an input signal of the apparatus; a first filter; a second frequency shifter; a second filter; and a third frequency shifter, the output of which is connected to the output of the apparatus. The first frequency shifter, the first filter, the second frequency shifter, the second filter and the third frequency shifter are serially connected; and each one of the first frequency shifter, second frequency shifter and third frequency shifter has separate shift input signals, respectively. A corresponding radio base station assembly and method are also presented.
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