Abstract
Snow accretion on a radome makes millimeter-wave radar unusable big problem. We developed a structure in which a m-PPE foamed resin is placed as an insulator on the back of the ABS solid resin to obtain effective snow-melting ability to a radome with a heater element. The impact of reduced power consumption was computed employing heat transfer simulations. The millimeter-wave transmittance of the foamed resin was experimentally determined by measuring the dependence of the complex permittivity on the foaming factor. Thus, design factors for a radome with both high snow-melting efficiency and millimeter-wave transmittance are proposed.
