Four-pair midspan powering with a splitter in a power over...

Details Four-pair midspan powering with a splitter in a power over... Four-pair midspan powering with a splitter in a power over...

2011-06-28

2011-06-28

Wang, Albert (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

C307S017000

Reexamination Certificate

active

07971075

ABSTRACT:
A midspan power sourcing equipment (PSE) that supports four-pair powering in a power over Ethernet (PoE) applications. The midspan PSE can provide power to two separate end devices using a single cable. To ensure compatibility with legacy Ethernet devices, the ports used for transmission of data are designed with a sufficient inductance level or a low effective impedance at a frequency of operation.

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David Law and Wael William Diab, “100BASE-T normative 350uH inductance specification and IEEE P802.3at,” IEEE P802.3at DTE Power Enhancements Task Force, Jul. 16-19, 2007.

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