Electronically steered metasurface antenna

Mobile devices, climate science, and autonomous vehicles all require advanced microwave antennas for imaging, radar, and wireless communications. We propose a waveguide-fed metasurface antenna architecture that enables electronic beamsteering from a lightweight circuit board with varactor-tuned elements. Our approach uses a unique feed structure and layout that enables spatial sampling at the Nyquist limit of half a wavelength. We detail the design of this Nyquist metasurface antenna and experimentally demonstrate electronic beamsteering in two directions. Nyquist metasurface antennas can realize high performance without costly and power hungry phase shifters, making them a compelling technology for future antenna hardware.

Automated summary

This study introduces a novel waveguide-fed metasurface antenna architecture, which enables electronic beamsteering and demonstrates high performance and low cost. By utilizing a unique feed structure and layout, the research achieves significant breakthroughs in spatial sampling, providing strong support for future antenna hardware technology.