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Contact Conditions in Connectors that Cause Common Mode Radiation
Yu-ichi HAYASHI Yoshiki KAYANO Takaaki MIZUKI Hideaki SONE Hiroshi INOUE
IEICE TRANSACTIONS on Electronics
Publication Date: 2011/09/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices – Papers selected from International Session on Electro-Mechanical Devices (IS-EMD2010) and other research results –)
cable television internet, coaxial transmission line, common-mode current, contact failure, electromagnetic interference,
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When contact failure occurs in a connector in a coaxial high-frequency (HF) signal transmission line, it is well known that common-mode (CM) radiation occurs on the line. We focus on contact conditions in a connector causing such CM radiation. Experiments and simulations verify that CM radiation increases as the contact resistance increases. While the CM current strongly depends on the distribution pattern of contact resistances at a low resistance, the CM current does not depend on these pattern at a high resistance. Our results indicate that it is important to maintain a symmetrical distribution of contact spots whenever the number of such spots is four or more.