Capacitive-loaded jumper cables, shunt capacitance units and related methods for enhanced power delivery to remote radio heads
Tower systems suitable for use at cellular base stations include a tower, an antenna mounted on the tower, a remote radio head mounted on the tower and a power supply. A power cable having a power supply conductor and a return conductor is connected between the power supply and the remote radio head. A shunt capacitance unit that is separate from the remote radio head that is electrically coupled between the power supply conductor and the return conductor of the power cable.
1. An inline connector module comprising:
a housing;
a first connector on a first end of the housing configured to connect to a connector of a jumper cable;
a second connector on a second end of the housing;
a power supply conductor and a return conductor provided within the housing; and
a shunt capacitance unit within the housing that is connected between the power supply conductor and the return conductor, the shunt capacitance unit including at least one capacitor that is coupled between the power supply conductor and the return conductor.
2. The inline connector module of claim 1 , wherein the at least one capacitor is a non-polar electrolytic capacitor.
3. The inline connector module of claim 1 , wherein the at least one capacitor comprises a first capacitor and a second capacitor coupled in series between the power supply conductor and the return conductor.
4. The inline connector module of claim 3 , further comprising a fuse circuit that is coupled in series between the first capacitor and the second capacitor.
5. The inline connector module of claim 1 , wherein the second connector is configured to mate with a connector of a junction enclosure.
6. The inline connector module of claim 1 , wherein the second connector is configured to mate with a connector of a remote radio head.
7. The inline connector module of claim 1 , wherein the at least one capacitor has a capacitance of at least 400 microfarads.
8. The inline connector module of claim 7 , wherein the at least one capacitor has a capacitance less than 2500 microfarads.
9. The inline connector module of claim 1 , wherein the shunt capacitance unit is configured to reduce a voltage drop at a remote radio head due to a spike in a direct current power supply signal carried by the jumper cable.
10. A method comprising:
attaching a first connector on a first end of an inline connector module to a connector of a jumper cable, wherein the inline connector module houses a power supply conductor, a return conductor, and a shunt capacitance unit therein, and wherein the shunt capacitance unit is connected between the power supply conductor and the return conductor and includes at least one capacitor that is coupled between the power supply conductor and the return conductor;
mating a second connector on a second end of the inline connector module to a mating connector; and
outputting a direct current (“DC”) power signal from a power supply and supplying the DC power signal that is output from the power supply to a remote radio head that is mounted remotely from the power supply over the jumper cable and the inline connector module.
11. The method of claim 10 , wherein the mating connector is a connector of the remote radio head.
12. The method of claim 10 , wherein the mating connector is a connector of a junction enclosure.
13. The method of claim 10 , wherein the at least one capacitor comprises a first capacitor and a second capacitor coupled in series between the power supply conductor and the return conductor.
14. The method of claim 13 , further comprising a fuse circuit that is coupled in series between the first capacitor and the second capacitor.
15. The method of claim 10 , further comprising determining that at least one capacitor that is coupled between the power supply conductor and the return conductor has failed; and
replacing the shunt capacitance unit.