A Matching Layer Loaded Absorber Using Screen‐Printed Resistive Meandering Square Ring and Line Structure With Wide‐Angle Stability

In this paper, we propose a broadband and wide‐angle stable absorber based on screen‐printing resistive film (SPRF) and impedance matching layer (IML). The proposed absorber consists of five layers: two IMLs, a lossy layer based on SPRF, a dielectric matching layer, and a metallic ground plane. Simulation and measurement results show that the reflection coefficient with | S 11 | less than −10 dB ranges from 4.5 to 19.3 GHz and 3.11 to 25.6GHz under normal incidence, respectively. Furthermore, the absorption band can maintain good stabilities under both TE and TM polarizations within 60° of oblique incidences. The measured and simulated results agree well with each other, verifying the design principle and manufacturing process. The proposed SPRF‐based and IML‐loaded absorber with improved angular stabilities can be applied in stealth radome and interference suppression in the future.