Dual-polarization ultra-wideband three-dimensional electromagnetic wave absorber

The invention discloses a dual-polarization ultra-wideband three-dimensional electromagnetic wave absorber. The wave absorber comprises a plurality of wave absorbing structure units which are arranged in a square period. Each wave-absorbing structure unit comprises a hollow cuboid structure enclosed by four dielectric substrates, special-shaped metal belts which are respectively plated on two adjacent inner side surfaces of the cuboid structure and are loaded with lumped resistors, and a metal reflecting surface arranged on the bottom surface of the cuboid structure. The ultra-wide wave-absorbing frequency band with the high wave-absorbing rate can be achieved, and meanwhile the structure is small in relative thickness and light in weight. 本发明公开了一种双极化超宽带三维电磁波吸收体，包括若干个呈方形周期排布的吸波结构单元，每个吸波结构单元包括由四块介质基板围成的中空的长方体结构、分别镀在长方体结构相邻两内侧面的加载有集总电阻的异形金属带、设置在长方体结构底面的金属反射面；本发明能够实现具备高吸波率的超宽吸波频带，同时结构相对厚度薄，重量轻。