Systems and methods for implementing a distributed antenna system in a radio frequency integrated circuit
First Claim
1. A remote antenna unit in a distributed antenna system, the antenna unit comprising:
- an uplink integrated circuit, wherein the uplink integrated circuit receives a radio frequency signal, the uplink integrated circuit comprising;
an uplink synthesizer configured to provide an uplink oscillating signal in at least one frequency;
an uplink mixer stage coupled to the uplink synthesizer, the uplink mixer stage configured to mix the uplink radio frequency signal with the uplink oscillating signal to produce an uplink intermediate frequency signal; and
an uplink control interface configured to receive uplink commands that control the frequency of the uplink oscillating signal;
the antenna unit further comprising a downlink integrated circuit that is electrically isolated from the uplink integrated circuit, wherein the downlink integrated circuit receives a downlink intermediate frequency signal, the downlink integrated circuit comprising;
a downlink synthesizer configured to provide a downlink oscillating signal in at least one frequency;
a downlink mixer stage coupled to the downlink synthesizer, the downlink mixer stage configured to mix the downlink intermediate frequency signal with the downlink oscillating signal to produce a down link radio frequency signal;
a downlink control interface configured to receive downlink commands that control the frequency of the downlink oscillating signal; and
at least one clock configured to provide at least one reference frequency to the uplink synthesizer and the downlink synthesizer.
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Accused Products
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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Citations
40 Claims
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1. A remote antenna unit in a distributed antenna system, the antenna unit comprising:
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an uplink integrated circuit, wherein the uplink integrated circuit receives a radio frequency signal, the uplink integrated circuit comprising; an uplink synthesizer configured to provide an uplink oscillating signal in at least one frequency; an uplink mixer stage coupled to the uplink synthesizer, the uplink mixer stage configured to mix the uplink radio frequency signal with the uplink oscillating signal to produce an uplink intermediate frequency signal; and an uplink control interface configured to receive uplink commands that control the frequency of the uplink oscillating signal; the antenna unit further comprising a downlink integrated circuit that is electrically isolated from the uplink integrated circuit, wherein the downlink integrated circuit receives a downlink intermediate frequency signal, the downlink integrated circuit comprising; a downlink synthesizer configured to provide a downlink oscillating signal in at least one frequency; a downlink mixer stage coupled to the downlink synthesizer, the downlink mixer stage configured to mix the downlink intermediate frequency signal with the downlink oscillating signal to produce a down link radio frequency signal; a downlink control interface configured to receive downlink commands that control the frequency of the downlink oscillating signal; and at least one clock configured to provide at least one reference frequency to the uplink synthesizer and the downlink synthesizer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for consolidating multiple components of a remote antenna unit onto integrated circuits, the method comprising:
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forming an uplink integrated circuit, wherein the uplink integrated circuit receives an uplink radio frequency signal and mixes the uplink radio frequency signal into an uplink intermediate frequency signal, wherein the uplink radio frequency signal has a frequency in one of a plurality of uplink frequency bands; and forming a downlink integrated circuit that is electrically isolated from the uplink integrated circuit, wherein the downlink integrated circuit receives a downlink intermediate frequency signal and mixes the downlink intermediate frequency signal into a downlink radio frequency signal, wherein the downlink radio frequency signal has a frequency in one of a plurality of downlink frequency bands. - View Dependent Claims (23, 24, 25, 26)
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27. A distributed antenna system, the system comprising:
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at least one hub unit configured to communicate with a base station; a plurality of remote antenna units communicatively coupled to the at least one hub and configured to communicatively couple signals between the at least one hub and a plurality of wireless terminals, a remote antenna unit in the plurality of remote antenna units comprising; an uplink integrated circuit, wherein the uplink integrated circuit receives a radio frequency signal, the uplink integrated circuit comprising; an uplink synthesizer configured to provide an uplink oscillating signal in at least one frequency; an uplink mixer stage coupled to the uplink synthesizer, the uplink mixer stage configured to mix the radio frequency signal with the uplink oscillating signal to produce an uplink intermediate frequency signal; and an uplink control interface configured to receive uplink commands that control the frequency of the uplink oscillating signal; the remote antenna unit also comprising a downlink integrated circuit that is electrically isolated from the uplink integrated circuit, wherein the downlink integrated circuit receives a downlink intermediate frequency signal, the downlink integrated circuit comprising; a downlink synthesizer configured to provide a downlink oscillating signal in at least one frequency; a downlink mixer stage coupled to the downlink synthesizer, the downlink mixer stage configured to mix the downlink intermediate frequency signal with the downlink oscillating signal to produce a down link radio frequency signal; a downlink control interface configured to receive downlink commands that control the frequency of the downlink oscillating signal. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification