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Abstract #1583

A highly-miniaturized inverted cable trap

Xinqiang Yan1,2 and John C. Gore1,2

1Institute of Imaging Science, Vanderbilt University, Nashville, TN, United States, 2Radiology and Radiological Science, Vanderbilt University, Nashville, TN, United States

Cable traps are commonly used for RF coils to suppress the common-mode current flowing on the outer conductor of coaxial cables. In massive-element array coils, conventional cable traps become cumbersome and not easy to assemble due to the limited space. In this work, we propose a novel circuit component called an “inverted cable trap”, which uses the outer conductor of a coaxial cable to form a capacitor rather than an inductor and which can be highly miniaturized. This inverted trap suppresses common-mode signals by up to -23 dB at 300 MHz which makes it valuable for operations at 7T.

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