▎ 摘　　要

NOVELTY - The transparent meta-material hidden portion has an uppermost medium layer (1), an upper layer pattern layer (2), an upper medium substrate (3), a middle layer medium layer (4), a lower layer reflecting layer (5), and a lower layer medium substrate (6). The upper layer pattern layer comprises a non-closed arched ring, and a resonant structure that is composed of symmetrical branches. The upper layer pattern layer is a centro-symmetric structure. The upper layer pattern layer and the lower layer reflecting layer are made of transparent conductive material zinc oxide aluminum, indium tin oxide, fluorine-doped tin dioxide, graphene film, nano-silver wire. USE - Transparent meta-material hidden portion based on arch-type and internal symmetrical structure used in electromagnetic wave and new artificial electromagnetic material platform. ADVANTAGE - The absorption efficiency of the electromagnetic wave and incident angle stability of the metamaterial wave absorber is improved. The absorption of electromagnetic wave in certain broadband range is realized while keeping the high transmittance. The wave-absorbing performance has good angle stability. The internal symmetrical structure of the hidden portion is simplified, so that the manufacturing cost is reduced. DESCRIPTION OF DRAWING(S) - The drawing shows a side view of the single unit structure of ttransparent meta-material hidden portion. Uppermost medium layer (1) Upper layer pattern layer (2) Upper medium substrate (3) Middle layer medium layer (4) Lower layer reflecting layer (5) Lower layer medium substrate (6)