Abstract #1406

Passive Tunable RF Leakage Canceller for Simultaneous Transmit and Receive (STAR) RF Coils at 1.5T Imaging

Zachary Colwell¹, Djaudat Idiyatullin², Lance DelaBarre², Thomas Vaughan³, Michael Garwood², and Sung-Min Sohn¹

¹School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, United States, ²Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, MN, United States, ³Zuckerman Institute, Columbia University, New York, NY, United States

Simultaneous Transmit and Receive (STAR) requires high decoupling between the RF transmitter and receiver. Current methods for this include, but are not limited to: geometric isolation, active RF leakage cancellation and metamaterial decoupling. The presented method uses a passive, four-port, tunable canceller circuit to achieve upwards of 40 dB of isolation between a quadrature transmit coil pair and the single receiving coil for a 1.5T system.

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