Patent ID: 7411564

Claim:
A frequency multiband antenna comprising: a Photonic Bandgap (PBG) material suitable for the spatial and frequency-wise filtering of electromagnetic waves, said PBG material exhibiting at least one stopband and forming an exterior surface radiating in emission and/or in reception, at least one defect of periodicity of the PBG material in such a way as to create at least one narrow passband within said at least one stopband of said PBG material, and an excitation device suitable for emitting and/or receiving electromagnetic waves inside said at least one narrow passband created by said at least one defect, wherein: the excitation device is suitable for working simultaneously at least around a first and a second distinct working frequency; the first and the second working frequencies are situated inside respectively a first and a second narrow passband, mutually distinct, and the first and the second narrow passbands are created by the same defect of periodicity of the PBG material.