High-Temperature Superconducting Microstrip Line Filter for Mobile Telecommunication

• UENO Yoshiki

  Advanced Mobile Telecommunication Technology Inc.

• SAITO Kenshi

  Advanced Mobile Telecommunication Technology Inc.

• SAKAKIBARA Nobuyoshi

  Advanced Mobile Telecommunication Technology Inc.

• OKAZAKI Mitsunari

  Advanced Mobile Telecommunication Technology Inc.

• AOKI Masayuki

  Advanced Mobile Telecommunication Technology Inc.

抄録

Large-area High-temperature superconducting films and damage-free processing techniques have been developed to fabricate low insertion loss and sharp skirt filters for mobile telecommunication. An off-axis-type dc sputtering method was employed to deposit Y-Ba-Cu-O films on both sides of the substrate. The surface resistance of the films was about 0.35mΩ (at 70 K and 10 GHz). An 11-pole bandpass receiving filter for the IS-95 telecommunication system was designed and fabricated using 60mm×50mm YBCO films on a 0.5-mm-thick MgO substrate. The passband insertion loss at 70 K was about 0.1 dB with 0.1 dB ripple. The third-order intercept point of the filter was 49.5 dBm. We have assembled the filter and a low-noise amplifier in a dewar with a cryocooler. Ultralow-noise performance (noise figure: 0.5 dB at 70 K) was presented by the cryogenic filter subsystem.

収録刊行物

• IEICE transactions on electronics

  IEICE transactions on electronics 81 (10), 1573-1577, 1998-10-25

  一般社団法人電子情報通信学会

キーワード

• high-temperature superconductor
• HTS
• bandpass filter
• filter subsystem
• front-end

詳細情報

• CRID: 1573105977302574592
• NII論文ID: 110003211357
• NII書誌ID: AA10826283
• ISSN: 09168524
• 本文言語コード: en
• データソース種別:
  • CiNii Articles