An adaptive antenna for a multipath propagation environment. - Yasutaka Ogawa; Ryuhei Sasaki; Takeo Ohgane; Kiyohiko Itoh (ICC, 1998)

Leaf-Shaped Element Bowtie Antenna with Flat Reflector for UWB Applications. - Michitaka Ameya; Manabu Yamamoto; Toshio Nojima; Kiyohiko Itoh (IEICE Trans. Commun., 2007)