Hironobu Yamamoto Jian Zhou Takehiko Kobayashi Ultra Wideband Electromagnetic Phantoms for Antennas and Propagation Studies. 3173-3182 2008 91-A IEICE Transactions 11 http://dx.doi.org/10.1093/ietfec/e91-a.11.3173 db/journals/ieicet/ieicet91a.html#YamamotoZK08