Method and apparatus for controlling a line side impedance in a network device

摘要

In one embodiment, an apparatus includes a line side of a network device. The line side is configured to connect to a device external to the network device. The apparatus also includes a physical side of the network device. The physical side is configured to communicate with an external entity. An isolation device is configured to isolate the physical side from the line side. An inductor is coupled between the line side and the physical side. The inductor has a value configured to control a matching of an impedance of the line side with an impedance of the physical side as seen through the isolation device.

主权项

1. An apparatus comprising:
a line side of a network device, the line side configured to connect to a device external to the network device, wherein the line side comprises a connector of the network device configured to connect to the device external to the network device, and wherein the device external to the network device includes a cable; a physical side of the network device, the physical side configured to communicate with an external entity; an isolation device configured to isolate the physical side from the line side, wherein the isolation device includes a transformer configured to isolate a transmitter or receiver of the network device from the cable, and wherein the transmitter or receiver sends or receives communications to and from the cable; and a set of inductors coupled between the transmitter or receiver and the cable, wherein each inductor of the set of inductors has an inductance value configured to control a matching of an output impedance of the transformer with a combined impedance of the connector of the network device and the cable.