Low-Profile Wideband D-Band Absorber Utilizing Resistive Thin-Film Screen-Printing

Abstract

A low-profile and wideband Sub-THz absorber utilizing a thin resistive ruthenium oxide (RuO2) printing technique is proposed in this article. The proposed absorber exhibits an absorption bandwidth from 108.2 GHz to 171.1 GHz, which represents 45.04 % with a profile of 0.076 λmax which is the free-space wavelength at the lowest frequency. The detailed manufacturing steps are presented along with step-by-step photos of the fabricated sample. The fabricated prototype is validated by the free space measurement setup with good coherence to the simulated results. This invention is expected to provide a practical and concise solution for mitigating electromagnetic interference in future 6G devices. IEEE