Wave transmission lines and networks – Transmission line inductive or radiation interference...
Reexamination Certificate
2008-03-25
2008-03-25
Ham, Seungsook (Department: 2817)
Wave transmission lines and networks
Transmission line inductive or radiation interference...
C333S181000, C439S620050, C439S620230
Reexamination Certificate
active
11196658
ABSTRACT:
An RJ 45 connector for unshielded CAT5 cable has electromagnetic-interference-suppression circuitry to meet the Class B conducted and radiated emissions standard. The connector comprises, in addition to signal-conditioning transformers, a current-blocking ferrite and a plurality of pairs of common-mode filters, one pair for each conductor of each active twisted pair of the cable. Each pair of filters is connected in series with each other between a conductor of an active twisted pair and a transformer winding, and meets or exceeds the impedance, reactance, and resistance curves of FIGS.2-4. The ferrite is connected in series with each conductor of each inactive pair of the cable and across a capacitor to ground, and meets or exceeds the impedance, reactance, and resistance curves of FIGS.5-7.
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Avaya Technology Corp.
Ham Seungsook
Volejnicek David
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