Nobuaki Kumagai

Scattering and mode conversion of guided modes by a spherical object in an optical fiber

Nagayoshi Morita, T. Oda, Nobuaki Kumagai, 1979 .

Magnetostatic wave delay lines using an inhomogeneously magnetized YIG slab

Nobuaki Kumagai, Yoshihiko Masaoka, M. Tsutsumi, 1980 .

An improved finite-element formulation using transverse electric or magnetic fields components for electromagnetic waveguide mode analysis

Masanori Matsuhara, Nobuaki Kumagai, Tuptim Angkaew, 1987 .

Reflection and Transmission of Electromagnetic Waves by a Dielectric Half‐Space Moving Perpendicular to the Plane of Incidence

Toshiyuki Shiozawa, Nobuaki Kumagai, K. Hazama, 1967 .

Integral Equation Methods for Electromagnetics

Nagayoshi Morita, Nobuaki Kumagai, N. Morita, 1991 .

Finite-Element Analysis of Waveguide Modes: A Novel Approach that Eliminates Spurious Modes

Masanori Matsuhara, Nobuaki Kumagai, Tuptim Angkaew, 1987 .

Unified approach to the derivation of variational expressions for electromagnetic fields

Katsumi Morishita, Nobuaki Kumagai, N. Kumagai, 1976 .