H. Kojima

Fabrication and simulation of permittivity graded materials for electric field grading of gas insulated power apparatus

Naoki Hayakawa, Junya Ishiguro, H. Kojima et al. · IEEE Transactions on Dielectrics and Electrical Insulation · 2016 · 94 citations

Materials Engineering, Materials Science, Electrical Engineering +12

Half-swing clocking scheme for 75% power saving in clocking circuitry

H. Kojima, Shigehisa Tanaka, K. Sasaki · IEEE Journal of Solid-State Circuits · 1995 · 64 citations

Engineering, Vlsi Design, Power Optimization (Eda) +18

Simulation on discharge inception voltage improvement of GIS spacer with permittivity graded materials (ε-FGM) using flexible mixture casting method

Naoki Hayakawa, Yoshitaka Miyaji, H. Kojima et al. · IEEE Transactions on Dielectrics and Electrical Insulation · 2018 · 58 citations

Electrical Engineering, Engineering, Flexible Mixture Casting +6

Surface charge accumulation and partial discharge activity for small gaps of electrode/epoxy interface in sf₆ gas

Diaa‐Eldin A. Mansour, H. Kojima, Naoki Hayakawa et al. · IEEE Transactions on Dielectrics and Electrical Insulation · 2009 · 57 citations

Partial Discharge, Engineering, Glow Discharge +19

Evaluation of UHF method for partial discharge measurement by simultaneous observation of UHF signal and current pulse waveforms

M. Yoshida, H. Kojima, Naoki Hayakawa et al. · IEEE Transactions on Dielectrics and Electrical Insulation · 2011 · 53 citations

Ultra High Frequency, Electrical Engineering, Partial Discharge +15