Towards Millimeter-wavelength: Transmission-Mode Fresnel-Zone Plate Lens Antennas using Plastic Material Porosity Control in Homogeneous Medium

Abstract

We present two transmission-mode dielectric Fresnel-Zone Plate Lens (FZPL) antennas for use within the V-band spectrum. The proposed FZPs are realized via pure plastic material using two different additive manufacturing processes. The proposed FZP lenses are designed with half (λ/2) and quarter (λ/4) phase correction rings at 60-GHz with 30λ0 diameter, where λ0 is the free-space wavelength. The permittivity effect for lens sub-zones is controlled by material porosity in cube-shaped structures. The 3D printed zone plate lenses are built using additive manufacturing plastic materials with a thickness of λ0 and constant relative permittivities equal to 2.76 and 3.6. Different types of antenna with cosn-like radiation patterns as lens illuminators are analyzed on the vertical plane of the flat lenses to have a high efficiency over the considered operating band. Simulations and experimental measurements show a reasonably close match, therefore allowing for a reliable predictability.

Development of 60-GHz millimeter wave, electromagnetic bandgap ground planes for multiple-input multiple-output antenna applications

“…The small range communication in the 60 GHz required a multi Gb/s data transmission; therefore, a photonics-based mmW antenna was utilized for high-speed data transmission 8 . At mmW two Fresnel-zone plate antennas with the pure plastic material were used to achieve a high efficiency over the considered operating band 9 . The currently deployed wireless communication systems are overcrowded, which make the mmW band suitable for communications.…”

Design of a Metalens for Correcting the Phase Distortions of a Hemispheric Dielectric Radome in the Ka Band

“…The design is inspired by the well-known Fresnel lens. As it is known, a Fresnel lens consists of a set of concentric annular sections of the same curvature as the standard lens but with reduced thickness and with stepwise discontinuities between them, e.g., [14,15].…”

3D Printed Radar Lenses with Anti-Reflective Structures

“…The most common low-cost 3D printing technique is Fused Filament Fabrication (FFF) in which a thermoplastic filament material is heated and extruded through a nozzle that selectively deposits material for the specific geometry desired. This allows for complex, bespoke geometries to be readily produced out of materials suitable for millimeter wavelengths, and previous works have exploited this for the production of radar lenses [8][9][10][11][12][13][14].…”