Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Kazuhiro Shimaoka"'
Autor:
Hitoshi Iida, Katsumi Fujii, Kazuhiro Shimaoka, Masahiro Horibe, Anton Widarta, Ryoko Kishikawa
Publikováno v:
IEEE Microwave Magazine. 14:59-66
In recent communication networks, 100 Gb/s passive optical Ethernet networks have been established and started becoming widely used. In consumer broadcasting, the use of high-definition television in studio and live-relay broadcasts has been planned
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 62:1807-1813
To use the atomic candle signals of Cs atoms for the measurement of microwave power, the main parameters such as a standing or running microwave in the glass cell containing Cs atoms, the probing position in the waveguide, the intensity of the probin
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 62:1828-1833
A new broadband rectangular waveguide calorimeter for radio-frequency (RF) power meter calibration in the millimeter-wave region is reported. The calorimeter has a quasi-twin structure exploiting the WR-10 and WR-15 rectangular waveguides, and its op
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 60:2696-2701
The Rabi frequency for an atomic hyperfine structure transition is proportional to the magnetic field strength of the incident electromagnetic wave. Using the known proportionality constant, an atomic microwave power standard based on the Rabi freque
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 58:1114-1119
This paper describes the development of a new type of microwave power standard based on atomic resonances. An atomic Rabi frequency is proportional to the magnetic field strength of the resonant microwave; the proportionality constant is determined o
Publikováno v:
2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
Publikováno v:
Physica C: Superconductivity. 293:44-48
We successfully observed intrinsic Josephson effects of Tl 2 Ba 2 CaCu 2 O x (Tl-2212) thin films by structuring step-edges or mesas and measuring the electrical transport properties along the c -axis. For a step-edge with the height of 350 nm, a hys
Publikováno v:
2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
A broadband rectangular waveguide calorimeter is fabricated to establish a reliable mm-wave power standard in the frequency range from 110 GHz to 170 GHz. Two types of mm-wave power meter are calibrated using this calorimeter and their calibration fa
Autor:
Shuichi Yoshikawa, Isao Yoshida, Yorinobu Yoshisato, Kazuya Niki, Masaaki Nemoto, Kazuhiro Shimaoka
Publikováno v:
Physica C: Superconductivity. 273:143-150
Tl 2 Ba 2 CaCu 2 O x (Tl-2212) step-edge Josephson junctions (SEJJs) on MgO substrates have been frabricated and tested for millimeter wave applications. Although the single SEJJs exhibited clear Shapiro steps under Ka-band (27 to 40 GHz) irradiation
Publikováno v:
2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves.
A broadband rectangular waveguide calorimeter was designed to establish a reliable mm-wave power standard in the frequency range from 110 GHz to 170 GHz. This calorimeter precisely measures the absorbed mm-wave power in the mm-wave absorber by compar