Takafumi Kojima

Design and Development of a Hybrid-Coupled Waveguide Multiplexer for a Multiband Receiver

Takafumi Kojima, Álvaro González, Shin’ichiro Asayama et al. · IEEE Transactions on Terahertz Science and Technology · 2016 · 54 citations

Engineering, Electrical Engineering, Microelectronics +16

275–500 GHz Waveguide Diplexer to Combine Local Oscillators for Different Frequency Bands

Álvaro González, Takafumi Kojima, Keiko Kaneko et al. · IEEE Transactions on Terahertz Science and Technology · 2017 · 54 citations

Engineering, Electrical Engineering, Global Navigation Satellite Systems +16

Terahertz Corrugated Horns (1.25<formula> <tex>${\hbox{--}}$</tex> </formula>1.57 THz): Design, Gaussian Modeling, and Measurements

Álvaro González, Keiko Kaneko, Takafumi Kojima et al. · IEEE Transactions on Terahertz Science and Technology · 2016 · 49 citations

Natural Sciences, Electrical Engineering, Physics +10

Development and testing of Band 10 receivers for the ALMA project

Yoshinori Uzawa, Yasunori Fujii, Álvaro González et al. · Physica C Superconductivity · 2013 · 28 citations

Engineering, Electrical Engineering, Instrumentation +12

Three Quanta Sensitivity Superconductor–Insulator–Superconductor Mixer for the 0.78–0.95 THz Band

Takafumi Kojima, M. Kroug, Masanori Takeda et al. · Applied Physics Express · 2009 · 26 citations

Engineering, Electrical Engineering, Physics +17