Narrow-band filter for the frequency range of 1.9 GHz using double-sided YBCO films on 10-mm-square and 20-mm-square LaAlO3 substrates

L. M. Wang*, Mao Yuan Horng, Chen Chung Liu, Jyh Haur Tsao, H. H. Sung, H. C. Yang, H. E. Horng

*此作品的通信作者

研究成果: 雜誌貢獻會議論文同行評審

5 引文 斯高帕斯(Scopus)

摘要

Narrow-band microstrip hairpin-type filters are designed for wireless-communication applications. We have fabricated the high-Tc superconducting filters by pattering YBa2Cu3Oy (YBCO) films deposited on 10-mm-square and 20-mm-squáre, 0.6-mm-thick LaAlO3 substrates. The form of hairpin-resonator band-pass filter can be thought of as an alternative version of parallel-couple-resonator filter, except that the open-circuited ends of the resonator are folded back. Our 3-pole 10-mm-square filter has a 2.5-dB maximum insertion loss and 16 MHz bandwidth at 1.94 GHz, while 3-pole 20-mm-square filter has a 0.45-dB maximum insertion loss and 30 MHz bandwidth at 1.94 GHz both with the air-gap height of 3 mm. By mechanically changing the height of air gap between the filter pattern and the top housing plane, the center of frequency of the filter was varied from 1.92 to 2.0 GHz, corresponding to a frequency shift of about 5%. The influences of wafer sizes and housing height on filter performance are discussed.

原文英語
頁(從 - 到)272-275
頁數4
期刊IEEE Transactions on Applied Superconductivity
13
發行號2 I
DOIs
出版狀態已發佈 - 2003 6月
對外發佈
事件2002 Applied Superconductivity Conference - Houston, TX, 美国
持續時間: 2002 8月 42002 8月 9

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學
  • 電氣與電子工程

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