RADIO WAVE ABSORPTION SHEET AND COMMUNICATION DEVICE

To provide a radio wave absorption sheet capable of solving a problem that an absorption band is limited by the dielectric loss tangent of a dielectric layer, and capable of easily enlarging the absorption band, and a communication device including the same.SOLUTION: A radio wave absorption sheet 10 includes a first dielectric layer 20 including a first surface 21 and a second surface located on the opposite side of the first surface, and a plurality of first conductive layers 30 located on the first surface and arranged in the first direction, and a second conductor layer located on the second surface. The first conductor layer has a first conductivity σ1 of 1.0 [MS/m] or less.SELECTED DRAWING: Figure 1 【課題】吸収帯域が誘電体層の誘電正接によって制限される問題を解決できる吸収帯域を拡大しやすい電波吸収シート及びそれを備える通信装置を提供する。【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導電体層と、を備える。第１導電体層は、１．０〔ＭＳ／ｍ〕以下の第１導電率σ１を有する。【選択図】図１