Fabrication of Alternating-Phase Fed Single-Layer Slotted Waveguide Arrays using Plastic Materials with Metal-Plating

Abstract Lightweight single-layer slotted waveguide array antennas are fabricated using plastic materials with metal-plating. A plastic material that has good heat-radiation properties is investigated. Three types of antennas are fabricated in milling process, using ABS resin, heatradiating plastic, and aluminium alloy. In measurements, all three types of antennas are confirmed to have almost the same VSWR and gain around 25GHz frequency band