Broadband Multi-Way Microstrip Power Dividers. - Mitsuyoshi Kishihara; Kuniyoshi Yamane; Isao Ohta; Tadashi Kawai (IEICE Trans. Electron., 2005)

Multi-Stage, Multi-Way Microstrip Power Dividers with Broadband Properties. - Mitsuyoshi Kishihara; Isao Ohta; Kuniyoshi Yamane (IEICE Trans. Electron., 2006)

Cruciform Directional Couplers in E-Plane Rectangular Waveguide. - Mitsuyoshi Kishihara; Isao Ohta; Kuniyoshi Yamane (IEICE Trans. Electron., 2007)