Abstract—A resonance radar absorber is proposed that is theoretically matched with the free space for a reflection coefficient level no greater than –40 dB at a given frequency. The design of the absorber is an array of electrically conductive squares on a lossy dielectric layer metallized on the opposite side of the array. A preset dielectric is used in the absorber design, and the dimensions of the square elements of the array are many times greater than the thickness of the dielectric layer. The relative change in the resonance frequency with a change in the angle of incidence of TE- and TM-polarized waves in range of 0°–45° does not exceed 1%.

中文翻译：

---

在给定频率下与自由空间匹配的共振雷达吸收器

摘要—提出了一种共振雷达吸收器，在给定频率下，其理论上与自由空间匹配，反射系数水平不大于–40 dB。吸收体的设计是在金属化的有损介电层上形成的导电正方形阵列，该介电层在该阵列的相对侧。吸收体设计中使用了预设的电介质，阵列中正方形元素的尺寸比电介质层的厚度大许多倍。共振频率随TE和TM极化波的入射角在0°-45°范围内变化的相对变化不超过1％。