Coaxial Self-decoupled RF Coil

Abstract

Wearable RF coils are receiving increasing attention since they can improve patient comfort and maximize SNR. For wearable coil arrays, however, the geometrical relationships between coils may change when they are bent and/or stretched. This in turn may decrease the performance of conventional decoupling methods such as overlapping and L/C network, especially for transmit/receive coil where the preamp decoupling is not feasible. In this work, we proposed a novel coaxial self-decoupled coil that has robustness decoupling performance versus coil distance and coil shapes. High isolations of <-15 dB can be achieved when the coils are gapped, overlapped, and/or stretched.