Slot Antenna Coupled YBa_2Cu_3O_<7-δ> Josephson Mixers for Millimeter Wave Radiation
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概要
- 論文の詳細を見る
The antenna structure and the direction of the irradiated signal wave were investigated in order to improve the responsivity of a slot antenna coupled YBa_2Cu_3O_<7-δ> (YBCO) Josephson mixer. The slot antenna coupled Josephson mixer consists of a thin-film slot antenna on a fused quartz substrate and a YBCO Josephson junction on a MgO substrate. It was found that maximum responsivity was obtained by letting the thickness of the MgO substrate be odd multiples of λ_d/4 (λ_d: wavelength in the substrate) and irradiating the electromagnetic wave through the MgO substrate. Furthermore, the device with the optimized structure improved the responsivity in the third-harmonic mixing by 7 dB compared to the device without a slot antenna in the harmonic mixing at 48 GHz.
- 社団法人応用物理学会の論文
- 1999-12-15
著者
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Uchida Takashi
Department of Urban Engineering, Osaka City University
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Yasuoka Yoshizumi
Department Of Electrical And Electronic Engineering National Defense Academy
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Yasuoka Yoshizumi
Department Of Electronic Engineering National Defense Academy
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Hasegawa Akihisa
Department Of Electronic Engineering National Defense Academy
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Hasegawa Akihisa
Department Of Biotechnology Faculty Of Engineering Osaka University
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Uchida Takashi
Department Of Electronic Engineering National Defense Academy
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Uchida Takashi
Department of Electrical and Electronic Engineering, National Defense Academy
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Uchida Takashi
Department of Clinical Pharmaceutical Sciences, School of Pharmaceutical Sciences, Kumamoto University
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