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Abstract #1784

Design and development of general propose transmit-receive (TR) switch for a linear, quadrature and dual tuned coils

Bijaya Thapa 1 , Joshua Kaggie 1 , Nabraj Sapkota 1 , and Eun Kee Jeong 1,2

1 Dept. of Physics and Astronomy, Utah Center for Advanced Imaging Research, University of Utah, Salt Lake City, Utah, United States, 2 Dept. of Radiology, Korea University, Seoul, Korea

TR switches are used to route high power RF pulses from the RF amplifier to the coil during transmit and the low power MR signal from the coil to the preamplifier during receive. This work developed a custom TR switch with high isolation that protected the preamplifiers from large transmit power. In this study, we designed and developed a TR switch with high isolation and low insertion loss at low cost and reasonable development time, that enabled both linear and quadrature modes for a double frequency coil. The switch's performance was comparable to a commercial TR switch.

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