Miniaturized cooling systems for HTS antennas

Katsufumi Ehata, Kazuaki Sato, Masanobu Kusunoki, Masashi Mukaida, Shigetoshi Ohshima, Yuichiro Suzuki, Ken Ichi Kanao

研究成果: ジャーナルへの寄稿会議記事査読

4 被引用数 (Scopus)


Two types of miniaturized cooling systems for High-Temperature Superconducting (HTS) antennas were designed and built. In this paper, details of these systems, measured and simulated properties of patch antennas installed in these systems, and results of a seal-off trial for 1 month are reported. Both the systems had portable size and weight and could cool the HTS devices. When a patch antenna with resonant frequency of 4.9 GHz was installed in the 1st cooling system, the radiation pattern of the antenna was strongly focused in the forward direction. This is because the vacuum chamber in which the antenna was packaged influenced the microwaves radiated from the antenna. Due to this effect, the directive gain of the antenna was enhanced by 11.2 dB. In the 2nd system, a seal-off trial was carried out to investigate the airtight property that is necessary for thermal isolation. The temperature of the sample stage could be kept under the critical temperature of YBCO for 1 month without continuous vacuum pumping. The cooling systems developed in this work are expected to promote the practical use of HTS antennas.

ジャーナルIEEE Transactions on Applied Superconductivity
1 I
出版ステータス出版済み - 3月 2001
イベント2000 Applied Superconductivity Conference - Virginia Beach, VA, 米国
継続期間: 9月 17 20009月 22 2000

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学


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