Digital baseband to IF conversion in cellular base stations
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United States of America Patent
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May 21, 1996
Grant Date -
N/A
app pub date -
May 2, 1994
filing date -
May 2, 1994
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system and method for converting and combining multiple digital baseband signals into a composite IF signal for subsequent up converting and transmitting as an RF signal. The system and method use distributed symmetrical circuit architecture to form a composite IF signal from multiple identical converting elements which are daisy chained together to produce the composite signal from the converted signals in each element. Circuit complexity is reduced by the use of the multiple identical elements each of which may be readily formed from a standard integrated circuit.
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