Improvement of the critical temperature of superconducting NbTiN and NbN thin films using the AlN buffer layer

Tatsuya Shiino, Shoichi Shiba, Nami Sakai, +5

Superconductor Science and Technology

A Molecular Line Observation toward Massive Clumps Associated with Infrared Dark Clouds

Takeshi Sakai, Nami Sakai, Kazuhisa Kamegai, +4

The Astrophysical Journal

Ch3oh EmissionCosmic AbundanceEngineeringPhysicsMolecular Line Observation +12

Enhancement of $f_{\mathrm {max}}$ to 910 GHz by Adopting Asymmetric Gate Recess and Double-Side-Doped Structure in 75-nm-Gate InAlAs/InGaAs HEMTs

Tsuyoshi Takahashi, Yoichi Kawano, Kozo Makiyama, +4

IEEE Transactions on Electron Devices

Electrical Engineering75-Nm-gate Inalas/ingaas HemtsEngineeringPhysicsHigh-frequency Device +11

Anomalous ¹³C Isotope Abundances in C₃S and C₄H Observed toward the Cold Interstellar Cloud, Taurus Molecular Cloud-1

Nami Sakai, Shuro Takano, Takeshi Sakai, +4

The Journal of Physical Chemistry A

Cosmic AbundanceCcs RatiosPhysicsNatural SciencesTaurus Molecular Cloud-1 +7

Maximum frequency of oscillation of 1.3 THz obtained by using an extended drain-side recess structure in 75-nm-gate InAlAs/InGaAs high-electron-mobility transistors

Tsuyoshi Takahashi, Yoichi Kawano, Kozo Makiyama, +4

Applied Physics Express

Thz PhotonicsElectrical EngineeringEngineeringPhysicsHigh-frequency Device +11

Development of 1.5 THz waveguide NbTiN superconducting hot electron bolometer mixers

Ling Jiang, Shoichi Shiba, Tatsuya Shiino, +7

Superconductor Science and Technology

Thz PhotonicsElectrical EngineeringTerahertz TechnologyHot Electron BolometerEngineering +13

3.1-THz Heterodyne Receiver Using an NbTiN Hot-Electron Bolometer Mixer and a Quantum Cascade Laser

Shoichi Shiba, Yoshihisa Irimajiri, T. Yamakura, +4

IEEE Transactions on Terahertz Science and Technology

PhotonicsThz PhotonicsTerahertz SpectroscopyEngineeringPhysics +10

Flip chip assembly for sub-millimeter wave amplifier MMIC on polyimide substrate

Yoichi Kawano, Hiroshi Matsumura, Shoichi Shiba, +6

Millimeter Wave TechnologyEngineeringHigh-frequency DeviceMixed-signal Integrated CircuitAntenna +8

A 20 Gbit/s, 280 GHz wireless transmission in InPHEMT based receiver module using flip-chip assembly

Yoichi Kawano, Hiroshi Matsumura, Shoichi Shiba, +7

Electrical EngineeringEngineeringRadio FrequencyHigh-frequency DeviceFlip-chip Assembly Technique +10

F-Band Bidirectional Amplifier Using 75-nm InP HEMTs

Shoichi Shiba, Masaru Sato, Toshihide Suzuki, +4