Electromagnetic Wave Absorber

An electromagnetic wave absorber comprising:

• a pattern layer in which a plurality of pieces of conductive patterns including a single or plurality of kinds of conductive patterns having a substantially polygonal outline shape in which at least one corner portion is shaped in curve is formed in a mode where the plurality of conductive patterns are separated from each others;
• and
• a loss layer having a portion made of at least one material of a magnetic loss material having complex specific magnetic permeability and a dielectric loss material having complex specific permittivity,
• the pattern layer and the loss layer being laminated on each other, and
• a portion, formed in curve in the corner portion, being formed with a dimension in which frequencies where peaks of absorption amount are reached are fixed regardless of an angle position relationship of the conductive pattern with respect to a polarization direction as viewed from an incident direction of electromagnetic direction, the dimension being small.