Practical DMA-Based Analog and Wave-Domain Computing

Develop practical dynamic metasurface antenna platforms for analog and wave-domain computing with adequate accuracy, calibration, bandwidth, and reconfigurability, together with microwave RF-digital co-design.

Background

The article identifies analog and wave-domain computing as a potential use of programmable DMA apertures, in which spatial transformations, filtering, combining, or wavefront operations are performed electromagnetically before conventional digital processing. This could reduce the burden of digitizing and processing high-dimensional RF data in MIMO, sensing, and computational-imaging systems.

However, the article characterizes practical DMA-based analog computing as immature and lists accuracy, calibration, bandwidth, reconfigurability, and RF-digital co-design as unresolved implementation challenges.