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US 9,960,487 B2Granted
Flexible distributed antenna system using a wide band antenna device
AssigneeZinwave, Ltd.
InventorsTrevor Gears, Zafer Boz, Graham Ronald Howe, Emiliano Mezzarobba, Benedict Russell Freeman, Andrew Robert Bell
Life of this patent
Estimating the term…
Abstract
A distributed antenna system (DAS) including a wide band antenna device having respective transmit and receive antennas disposed in a single package and arranged to provide mutual isolation so that in use noise from the transmit antenna is isolated from the transmit antenna, whereby reception is possible at the same frequency as transmission.
Claims27
A distributed antenna system (DAS) for facilitating communication between a plurality of external networks and a plurality of user devices, the DAS comprising:
- a hub configured to receive, from the plurality of external networks, a plurality of electrical transmission signals representing a plurality of communication services, wherein a first communication service of the plurality of communication services includes a first electrical transmission signal of the plurality of electrical transmission signals that includes a first frequency, wherein a second communication service of the plurality of communication services includes a second electrical transmission signal of the plurality of electrical transmission signals that includes a second frequency, wherein the first frequency and the second frequency are at least one GHz apart, wherein the hub is configured to generate a first optical transmission signal based on the first electrical transmission signal and a second optical transmission signal based on the second electrical transmission signal, and wherein the first optical transmission signal and the second optical transmission signal are optical analogues of the first electrical transmission signal and the second electrical transmission signal without electrical frequency conversion of the first electrical transmission signal or the second electrical transmission signal;
- a transmission path coupled to the hub to provide a path for the first optical transmission signal and the second optical transmission signal;
- at least one remote unit coupled to the transmission path, wherein each remote unit of the at least one remote unit is configured to receive the first optical transmission signal and the second optical transmission signal, to convert the first optical transmission signal into the first electrical transmission signal, to provide via an amplifier the first electrical transmission signal to an output of the remote unit for transmission to a first device of the plurality of user devices that operate according to the first communication service, to convert the second optical transmission signal into the second electrical transmission signal, and to provide via the amplifier the second electrical transmission signal to the output for transmission to a second device of the plurality of user devices that operate according to the second communication service, wherein the amplifier has high linearity for any frequency between the first frequency and the second frequency, wherein each remote unit of the at least one remote unit is further configured to receive a first electrical reception signal from the first device at an input of the remote unit, to convert the first electrical reception signal into a first optical reception signal, to receive a second electrical reception signal from the second device at the input of the remote unit, and to convert the second electrical reception signal into a second optical reception signal, and wherein the first optical reception signal and the second optical reception signal are optical analogues of the first electrical reception signal and the second electrical reception signal without electrical frequency conversion of the first electrical reception signal or the second electrical reception signal;
- and
- a reception path coupled to the at least one remote unit and the hub to provide a path for the first optical reception signal and the second optical reception signal, wherein the hub is configured to receive the first optical reception signal and the second optical reception signal, to convert the first optical reception signal into the first electrical reception signal, to convert the second optical reception signal into the second electrical reception signal, and to provide the first electrical reception signal to a first external network of the plurality of external networks and the second electrical reception signal to a second external network of the plurality of external networks.
2 more elements
Dependencies are inferred from the claim text.