RADIO WAVE ABSORPTION SHEET AND COMMUNICATION DEVICE

To provide a radio wave absorption sheet that limits an absorption band by the dielectric loss tangent of a dielectric layer, and makes it easy to expand the absorption band.SOLUTION: A radio wave absorption sheet 10 includes a first dielectric layer 20 including a first surface 21 and a second surface 22 located on the opposite side of the first surface, a plurality of first conductor layers 30 located on the first surface and arranged in the first direction, and a second conductor layer 40 located on the second surface, and the plurality of first conductor layers include a plurality of first shape layers 31, and a plurality of second shape layers 32 having different shapes from the first shape layer in a plan view.SELECTED DRAWING: Figure 2 【課題】電波吸収シートにおいて、吸収帯域が誘電体層の誘電正接によって制限されることがある。吸収帯域を拡大しやすい電波吸収シートを提供する。【解決手段】電波吸収シート１０は、第１面２１及び第１面の反対側に位置する第２面２２を含む第１誘電体層２０と、第１面に位置し、第１方向に並ぶ複数の第１導電体層３０と、第２面に位置する第２導電体層４０と、を備える。複数の第１導電体層は、複数の第１形状層３１と、平面視において第１形状層とは異なる形状を有する複数の第２形状層３２と、を含む。【選択図】図２