Electromagnetic band gaps from H-shaped fractals Lin Li, Dong Cheng, Sheng Wang, Zhangyou Chen, Zhengyou Liu and Xing-Zhong Zhao Eur. Phys. J. Appl. Phys., 36 2 (2006) 131-134 Published online: 11 October 2006 DOI: 10.1051/epjap:2006118