Systems and methods for implementing a distributed antenna system in a radio frequency integrated circuit
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United States of America Patent
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Apr 15, 2014
Grant Date -
Oct 3, 2013
app pub date -
Mar 27, 2012
filing date -
Mar 27, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A remote antenna unit includes an uplink integrated circuit (IC) and a downlink IC. The uplink IC includes an uplink synthesizer that provides an uplink oscillating signal; an uplink mixer stage that mixes an uplink radio frequency signal with the uplink oscillating signal to produce an uplink intermediate frequency signal; and an uplink control interface that receives uplink commands that control the frequency of the uplink oscillating signal. The downlink IC includes a downlink synthesizer that provides a downlink oscillating signal; a downlink mixer stage that mixes the downlink intermediate frequency signal with a downlink oscillating signal to produce a down link radio frequency signal; a downlink control interface that receives downlink commands that control the frequency of the downlink oscillating signal. The antenna unit also includes a clock that provides a reference frequency to the uplink and downlink synthesizers.
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