A high-gain dual-band shared-aperture array integrating zero-order-resonance patch and higher-order metasurface antenna

Abstract

This letter proposes a high-gain shared-aperture array for vehicular communications which integrates the hybrid zeroth-order-resonance (ZOR) patch and the higher-order metasurface antenna (MA). In terms of each array element, four hybrid ZOR patches with shorting pins form a metasurface which is fed by slot coupling. Different from some reported designs which have more high-frequency elements than low-frequency ones, the whole array is composed of 4 $$\times$$ × 4 hybrid ZOR patches operating in C band (4.74–5.12 GHz) and 2 $$\times$$ × 2 MAs working in Ku band (13.0–14.0 GHz). Such a layout brings that the designed array has the benefit to reduce Ku-band loss. Measure results validate the dual-band operation and show that the antenna has its peak gains of 12.7 dBi and 17.2 dBi in these two bands, respectively, which can support vehicle-to-base station and vehicle-to-satellite communications.

Droplet dynamics affecting the shape of patterns formed spontaneously by transforming UV-curable emulsions

“…This requires a texture that has sensitive feels such as the shading effect and tactile feel that can be obtained from a large pitches and depths pattern. For application examples requiring high functionality, antenna patterns 2 , 3 for electromagnetic metamaterials 4 – 6 require large pitches on the submillimeter-to-millimeter-scale. To provide optical functions such as anisotropic reflection, a deep asymmetrical sloped shape is required, and more three-dimensional processing within the plane of the substrate is becoming necessary.…”