Method and arrangement for transmitting and receiving RF signals through various radio interfaces of communication systems
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United States of America Patent
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Jul 1, 2014
Grant Date -
May 28, 2009
app pub date -
Jun 10, 2008
filing date -
Nov 26, 1998
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Abstract
A method and arrangement for transmitting and receiving RF signals, associated with different radio interfaces of communication systems, employ a direct conversion based transceiver which substantially comprises one receive signal branch and one transmit signal branch. Mixing frequencies of the different systems are generated by a single common by use of an output frequency divider in combination with the synthesizer, and by use of filtering corresponding to a system channel bandwidth by means of a controllable low-pass filter operating at baseband frequency.
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