The possibility of Cherenkov radiation generation in a photonic crystal formed by parallel metallic threads

Photonic crystals, formed by the periodically strained parallel metallic threads, can be used (and already are in use) in the most various applications, first of all for microwave antenna applications [1]. In the present work we show, that the refractive index of photonic crystal, formed from the metallic threads, for the wave with polarization orthogonal to the threads n > 1 and, therefore, Cherenkov radiation can be generated in the crystal.