Combining power from electrically isolated power paths for powering remote units in a distributed antenna system(s) (DASs)
First Claim
1. A remote unit for a distributed antenna system (DAS), comprising:
- a plurality of internal power paths each configured to carry power to a combined power node coupled to at least one remote unit load to provide a combined output power to the at least one remote unit load;
a plurality of input power ports provided in a respective internal power path among the plurality of internal power paths, each input power port among the plurality of input power ports configured to receive input power from a respective external power path in a DAS;
a plurality of isolation circuits provided in a respective internal power path among the plurality of internal power paths, each isolation circuit among the plurality of isolation circuits configured to;
receive the input power from the respective input power port; and
provide an electrically isolated output power based on the received input power at the combined power node to provide the combined output power;
a plurality of control circuits provided between the combined power node and the plurality of isolation circuits in a respective internal power path among the plurality of internal power paths to control the electrically isolated output power provided to the combined power node; and
a controller configured to selectively control the plurality of control circuits to control the electrically isolated output power delivered from each isolation circuit in the respective internal power path, to the combined power node into the combined output power.
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0 Petitions
Accused Products
Abstract
Embodiments disclosed herein include combining power from isolated power paths for powering remote units in distributed antenna systems (DASs). In one example, a remote unit(s) is configured to include multiple input power ports for receiving power from multiple power paths. The received power from each input power port is combined to provide a combined output power for powering the remote unit. Thus, a remote unit can be powered by the combined output power. To avoid differences in received power on the multiple input power ports causing a power supply to supply higher power than designed or regulated, the input power ports in the remote unit are electrically isolated from each other. Further, the received power on the multiple power inputs ports can be controlled to be proportionally provided to the combined output power according to the maximum power supplying capabilities of the respective power supplies.
471 Citations
24 Claims
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1. A remote unit for a distributed antenna system (DAS), comprising:
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a plurality of internal power paths each configured to carry power to a combined power node coupled to at least one remote unit load to provide a combined output power to the at least one remote unit load; a plurality of input power ports provided in a respective internal power path among the plurality of internal power paths, each input power port among the plurality of input power ports configured to receive input power from a respective external power path in a DAS; a plurality of isolation circuits provided in a respective internal power path among the plurality of internal power paths, each isolation circuit among the plurality of isolation circuits configured to; receive the input power from the respective input power port; and provide an electrically isolated output power based on the received input power at the combined power node to provide the combined output power; a plurality of control circuits provided between the combined power node and the plurality of isolation circuits in a respective internal power path among the plurality of internal power paths to control the electrically isolated output power provided to the combined power node; and a controller configured to selectively control the plurality of control circuits to control the electrically isolated output power delivered from each isolation circuit in the respective internal power path, to the combined power node into the combined output power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A distributed antenna system (DAS), comprising:
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a central unit configured to; distribute at least one downlink communications signal over at least one communications medium to at least one remote unit among a plurality of remote units; and receive at least one uplink communications signal over the at least one communications medium from at least one remote unit among the plurality of remote units; each of the plurality of remote units configured to; receive the at least one downlink communications signal over the at least one communications medium from the central unit; and distribute the received at least one downlink communications signal from the central unit to at least one client device; receive the at least one uplink communications signal from the at least one client device; and distribute the received at least one uplink communications signal over the at least one communications medium to the central unit; and at least one of the plurality of remote units further comprising; a plurality of internal power paths each configured to carry power to a combined power node coupled to at least one remote unit load to provide a combined output power to the at least one remote unit load; a plurality of input power ports provided in a respective internal power path among the plurality of internal power paths, each input power port among the plurality of input power ports configured to receive input power from a respective external power path in a DAS; a plurality of isolation circuits provided in a respective internal power path among the plurality of internal power paths, each isolation circuit among the plurality of isolation circuits configured to; receive the input power from a respective input power port; and provide an electrically isolated output power based on the received input power at the combined power node to provide the combined output power; a plurality of control circuits provided between the combined power node and the plurality of isolation circuits in a respective internal power path among the plurality of internal power paths; and a controller configured to selectively control an amount of electrically isolated output power delivered from the isolation circuit in the respective internal power path, to the combined power node into the combined output power. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification