Omega Bianisotropic Huygens’ Metamaterial Lens for Matching Improvement of W-Band Substrate Integrated E-Plane Horn

摘要

An omega bianisotropic Huygens’ metamaterial lens is utilized to alleviate the intrinsic discontinuity along the excited traveling wave at the radiating aperture area of a substrate integrated E-plane horn antenna at millimeter-wave frequencies at W-band. This discontinuity, which is mostly due to a wave impedance mismatch at the air and dielectric substrate, is smoothened by a Huygens’ metamaterial lens comprising omega bianisotropic particles. This allows to match the impedance mismatch between the horn and free space. For the presented E-plane integrated horn, the meta-lens improves the antenna matching bandwidth between 75 and 80 GHz, which is a significant improvement for this kind of antennas.