Multiple device to one-antenna combining circuit and methods of using same
View Patent ↗A multiple device to one-antenna combining circuit for transferring wireless communication signals from a first and second wireless communication device connected to a donor antenna is described. The circuit comprises a first single-stage circulator configured to be coupled to a transmission-reception path of the first wireless communications device; a two-stage circulator coupled to the first single-stage circulator and configured to be coupled a transmission-reception path of the second wireless communications device; a two-way splitter coupled to the two-stage circulator and configured to be coupled a transmission-reception path of the donor antenna; and a second single-stage circulator coupled between the two-way splitter and the first single stage circulator. The wireless transmissions of the first wireless communications device travel from the first signal stage circulator to the two-stage circulator to the two-way splitter to the donor antenna. The first wireless device can be a repeater. The second wireless device can be a telemetry radio. Methods of using the circuit are also provided.
1. A circuit that connects first and second wireless communications devices to a donor antenna for wireless communications, the circuit comprising:
a first single-stage circulator coupled to a transmission-reception path of the first wireless communications device;
a two-stage circulator coupled to the first single-stage circulator and to a transmission-reception path of the second wireless communications device;
a two-way splitter coupled to the two-stage circulator and to a transmission-reception path of the donor antenna; and
a second single-stage circulator coupled between the two-way splitter and the first single-stage circulator,
wherein wireless transmissions of the first wireless communications device travel from the first single-stage circulator to the two-stage circulator to the two-way splitter to the donor antenna and wireless transmissions of the second wireless device travel from the two-stage circulator to the second single-stage circulator to the two-way splitter to the donor antenna, and wherein, wireless reception at the donor antenna are routed from the two-way splitter.
2. The circuit of claim 1 , wherein the wireless reception at the donor antenna travels from the two-way splitter to the two-stage circulator to the second wireless communications device.
3. The circuit of claim 1 , further comprising a tuned line disposed between the two-stage circulator and the second single-stage circulator.
4. The circuit of claim 1 , further comprising a tuned line disposed between the first single-stage circulator and the second single-stage circulator.
5. The circuit of claim 1 , wherein the first wireless communications device comprises a repeater.
6. The circuit of claim 1 , wherein the second wireless communications device comprises a telemetry radio.
7. The circuit of claim 1 , wherein the first wireless communications device comprises a second transmission-reception path that is coupled to a service antenna.
8. The circuit of claim 1 , further comprising a data link configured to provide an Operations, Administration, Maintenance & Provisioning (OAM&P) path between the first and the second wireless communications devices.
9. The circuit of claim 8 , further comprising a System Operations Center (SoC) configured to wirelessly communicate with the donor antenna in order to remotely monitor and control one or both of the first and the second wireless communications devices.
10. The circuit of claim 1 , wherein the first and the second wireless communications devices are time-division duplex (TDD) devices.
11. The circuit of claim 1 , wherein the first and the second wireless communications devices are frequency-division duplex (FDD) devices, and a duplexer is disposed in the transmission-reception path of each of the first and the second wireless communications devices.
12. The circuit of claim 1 , wherein the first and the second wireless communications devices use the same wireless data communications network.
13. The circuit of claim 1 , wherein the first and the second wireless communications devices comprise a base station each, and each base station is configured to operate on different channels while transmitting-receiving over the donor antenna.
14. A repeater station comprising a donor antenna, a repeater, a telemetry radio and a service antenna for transferring wireless communication signals from a base station to mobile wireless devices, the repeater station comprising:
a first single-stage circulator coupled to a transmission-reception path of the repeater;
a two-stage circulator coupled to the first single-stage circulator and a transmission-reception path of the telemetry radio;
a two-way splitter coupled to the two-stage circulator and to a transmission-reception path of the donor antenna
a second single-stage circulator coupled between the two-way splitter and the first single-stage circulator;
wherein wireless transmissions of the repeater travel from the first single-stage circulator to the two-stage circulator to the two-way splitter to the donor antenna and wireless transmissions of the telemetry radio travel from the two-stage circulator to the second single-stage circulator to the two-way splitter to the donor antenna, and wherein, wireless reception at the donor antenna are routed from the two-way splitter.
15. The repeater station of claim 14 , further comprising a data link configured to provide an Operations, Administration, Maintenance & Provisioning (OAM&P) path between the telemetry radio and the repeater.
16. The repeater station of claim 15 , wherein the telemetry radio remotely monitors and controls the repeater.
17. The repeater station of claim 14 , further comprising a tuned line disposed between the two-stage circulator and the second single-stage circulator.
18. The repeater station of claim 14 , further comprising a tuned line disposed between the first single-stage circulator and the second single-stage circulator.
19. The repeater station of claim 14 , wherein the first and the second wireless communications devices use a WiMAX wireless data communications network.
20. A method for wireless communications, the method comprising:
connecting first and second communications devices to a donor antenna utilizing a circuit, wherein the circuit comprises:
a first single-stage circulator coupled to a transmission-reception path of the first wireless communications device;
a two-stage circulator coupled to the first single-stage circulator and to a transmission-reception path of the second wireless communications device;
a two-way splitter coupled to the two-stage circulator and to a transmission-reception path of the donor antenna; and
a second single-stage circulator coupled between the two-way splitter and the first single-stage circulator;
transmitting wireless transmissions from the first wireless communications device by routing a signal to the first signal-stage circulator to the two-stage circulator to the two-way splitter to the donor antenna;
transmitting wireless transmissions from the second wireless communications device by routing a signal to the two-stage circulator to the second single-stage circulator to the two-way splitter to the donor antenna; and
forwarding wireless reception at the donor antenna from the two-way splitter to the first wireless communications device and/or the second wireless communications device.
21. The method of claim 20 , further comprising receiving wireless transmissions at the first wireless device by routing a signal from the donor antenna to the two-way splitter to the second single-stage circulator to the first single-stage circulator to the first wireless communications device.
22. The method of claim 20 , further comprising receiving wireless transmissions at the second wireless device by routing a signal from the donor antenna to the two-way splitter to the two-stage circulator to the second wireless communications device.
23. The method of claim 20 , further comprising:
pre-tuning a first radio frequency (RF) feedline between the two-stage circulator and the second single-stage circulator; and
pre-tuning a second radio frequency (RF) feedline disposed between the first single-stage circulator and the second single-stage circulator.
24. The method of claim 20 , wherein the first wireless communications device comprises a second transmission-reception path that is coupled to a service antenna.
25. The method of claim 20 , further comprising performing Operations, Administration, Maintenance & Provisioning (OAM&P) between the first and the second wireless communications devices.
26. The method of claim 20 , wherein the first and the second wireless communications devices use the same wireless data communications network.
27. The method of claim 20 , wherein the first and the second wireless communications devices comprise a base station each, and each base station is configured to operate on different channels while transmitting-receiving over the donor antenna.