We present a new technique for data transmission by wireless. We show how a circular array can have each of its major radiating modes orthogonally encoded with data. These data impressed radiating modes are concurrently excited, and then spatially combined, in order to give a structured far-field radiation pattern. Also discussed is how a receiver can recover these orthogonal data streams. A proof of principle Multi-ModeCircular Array (MMCA) is designed, simulated and tested at 900MHz.
Chepala, A., Ding, Y., & Fusco, V. (2019). Multimode Circular Antenna Array for Spatially Encoded Data Transmission. IEEE Transactions on Antennas and Propagation, 67(6), 3863-3868. [ 10.1109/TAP.2019.2905725 ]. https://doi.org/10.1109/TAP.2019.2905725