Patent ID: 9563243
Date: 2017-02-07
CPC Classifications: G06F,H04L

Claim:
1. A power over Ethernet midspan injector for providing power to a powered device, the power over Ethernet midspan injector comprising: an Ethernet device side data port comprising a plurality of pairs of pins; a powered device side data port comprising a plurality of pairs of pins; a plurality of pairs of data wires arranged to transmit data at frequencies of between a predetermined minimum frequency up to a predetermined maximum frequency, each of said plurality of pairs of pins of said powered device side data port coupled via a respective one of said plurality of data wire pairs to a respective one of said plurality of pairs of pins of said Ethernet device side data port; a power reception port; a first pair of first type coils; and a first pair of second type coils, each of said first pair of second type coils coupled in series to a respective one of said first pair of first type coils thereby forming a first coil set, wherein said power reception port is coupled to each wire of the pair of data wire pairs at a respective power node, via a respective first coil set, wherein the impedance of said first type coil is greater than the impedance of said second type coil when data is being transmitted through said first data wire pair at said predetermined minimum frequency, and wherein the impedance of said second type coil is greater than the impedance of said first type coil when data is being transmitted through said first data wire pair at said predetermined maximum frequency.