Non-contact PIM Evaluation Method Using a Standing Wave Coaxial Tube. - Daijiro Ishibashi; Nobuhiro Kuga (IEICE Trans. Electron., 2012)

Noncontact PIM Measurement Method Using Partial Impedance-Matching Method. - Kensuke Saito; Daijiro Ishibashi; Nobuhiro Kuga (IEICE Trans. Electron., 2013)

19.2 cm3 flexible fetal heart rate sensor for improved quality of pregnancy life. - Hiroyuki Sato; Kazuhiro Yoshimura; Hiroyuki Nakamoto; Daijiro Ishibashi; Yoshihiro Nakata; Yoshinori Yaginuma; Shoichi Masui (BioCAS, 2016)