Binary-coded multiplexing acquisition for flexible receiver arrays in Magnetic Particle Imaging

Wearable Magnetic Particle Imaging (MPI) relies on dense arrays of small receiver coils to achieve flexible sensing, but increasing coil count rapidly raises DAQ channel requirements and system complexity. We propose a binary-coded, time-division multiplexed readout that sequentially addresses receiver coils and jointly encodes coil identity and discretized signal amplitude using rectification, thresholding, and logic decoding. The quantization level is configurable, and higher quantization improves reconstruction fidelity in our evaluations while maintaining a reduced channel requirement. This approach enables scalable, low-cost readout for dense, flexible MPI receiver arrays.