Ultra-Efficient Wideband Multi-Layer Dielectric Resonator Antennas and Arrays

摘要

A very efficient, wideband and steerable DRA at 10 GHz is based on the radiation properties of a multi-layer dielectric resonator. The radiating bandwidth is maximized via an interplay between TE and TM radiating modes. The resonator shape, multi-layer structure and unit cell architecture favor multiple TE radiating modes in spectral proximity. Furthermore, radiating TM modes are suppressed and shifted to higher frequencies utilizing an air center. The technique provides a flat and high boresight gain over a wide frequency band. DRA designs are scalable over a broad frequency range from C-Band to automotive radar frequencies and beyond. We strongly believe that the technology provides valuable tradeoffs that cannot be readily achieved with conventional antenna technologies.