Design and Development of a 14-Pole High-Temperature Superconducting Filter at 127.5MHz

Jian Chang Du; Lai Yun Ji; Li Juan He

doi:10.4028/www.scientific.net/AMM.392.672

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 392Design and Development of a 14-Pole...

Design and Development of a 14-Pole High-Temperature Superconducting Filter at 127.5MHz

Abstract:

A high-temperature superconducting (HTS) band-pass filter centered frequency at 127.5MHz was successfully designed and developed. The HTS filter is 14-pole, adopting compact symmetrical dual-spiral resonators. The filter was fabricated on a 3-inch-diameter 0.5-mm-thick LaAlO₃ wafer with double-sided DyBa₂Cu₃O₇ thin films. Through the low temperature test, the insertion loss of the HTS filter is under 0.1dB, the bandwidth is 20 MHz, the return loss is better than-22dB and the out-of-band rejection is greater than 80dB. The filters measurements agree well with the simulation.

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Periodical:

Applied Mechanics and Materials (Volume 392)

Pages:

672-675

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.392.672

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Online since:

September 2013

Authors:

Jian Chang Du, Lai Yun Ji, Li Juan He

Keywords:

3-Inch-Diameter DyBa₂Cu₃O₇Thin Films, High-Temperature, Superconducting Filter, Symmetrical Dual-Spiral Resonator, Ultra-Low Frequency

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References

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