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Design and implementation of a lumped-element multipole HTS filter at 15 MHz

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6 Author(s)
Hui Xu ; Dept. of Electr. Eng., Columbia Univ., New York, NY, USA ; E. Gao ; S. Sahba ; J. R. Miller
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We have designed a three-pole bandpass filter operating at 15 MHz. The parameters of the filter include high Q, narrow band, low insertion loss and a return loss of 20 dB. The filter was fabricated from double-sided YBCO thin film on a two inch LAO substrate. The design utilizes individual HTS lumped elements (interdigital capacitors and meander line inductors) to realise the poles of the filter. The design and modeling of the filter are discussed in detail. Experimental results from the S-parameter measurements will be presented. Good agreement has been found between the simulation results and experimental data.

Published in:

IEEE Transactions on Applied Superconductivity  (Volume:9 ,  Issue: 2 )