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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kuwabara, N. Amemiya, F. Asou, H. |
| Copyright Year | 2003 |
| Description | Author affiliation: Kyushu Inst. of Technol., Kitakyushu, Japan (Kuwabara, N.) |
| Abstract | A common-mode choke coil (CM coil) was developed to use for countermeasures after installation for high speed LAN systems. The relations between the magnetic permeability of ferrite core and the common-mode insertion loss were investigated. The results indicated that the ferrite core, whose permeability was large in frequency range from 0.1 MHz to 5 MHz, was appropriate to realize the CM coil. Using this core, a CM coil with two twisted pairs was developed. The results of the investigation indicated that the differential mode insertion loss of this coil satisfied requirements to use for 1000 base-T system, and the common-mode insertion loss was sufficient to use countermeasures after installation. The CM coil for 1000 base-T telecommunication port was composed with the two developed CM coils. The investigation results for transmission quality showed that the CM coil for 1000 base-T was applicable for the cable length of 100 m or less. The measurement of countermeasure effect indicated that the CM coil was effective to reduce emissions and to improve immunity at telecommunication port for 1000 base-T. |
| Sponsorship | IEICE IEEE Power Electron. Soc |
| Starting Page | 586 |
| Ending Page | 591 |
| File Size | 373789 |
| Page Count | 6 |
| File Format | |
| ISBN | 4885521963 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-10-23 |
| Publisher Place | Japan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electronics |
| Subject Keyword | Inductors Local area networks Coils Permeability Insertion loss Magnetic cores Frequency Ferrites Impedance Communication cables |
| Content Type | Text |
| Resource Type | Article |
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