Shielded cable channel electromagnetic compatibility improvement using absorbers

Abstract

Multi-Gigabit Ethernet communication over shielded cables have challenging electromagnetic compatibility (EMC) and electromagnetic interference (EMI) problems. Circuitry on-board Ethernet physical layer (PHY) transceivers cannot adequately address these problems. In some cases, some circuitry may pose constraints on the transceiver design, making these problems more difficult to address. To improve EMC and increase tolerance to EMI, an improved shielded cable can be used to connect Ethernet PHY transceivers. In particular, a microwave-absorbing material is added to wrap one or more segments of the shielded cable. The microwave-absorbing material can be applied at or near the cable connectors attached to the ends of the shielded cable. One or more parameters of the microwave-absorbing material can be chosen or optimized for a particular type of shielded cable and sensitivity of the Ethernet PHY transceiver to EMC and EMI problems.

Dependencies are inferred from the claim text.