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A high return loss of microwave bandpass filter using superconducting electrospun YBCO nanostructures

Jasim, S. E. and Jusoh, M. A. and Yeow, Y. K. and Jose, R. (2018) A high return loss of microwave bandpass filter using superconducting electrospun YBCO nanostructures. Progress In Electromagnetics Research C, 81 . pp. 63-75. ISSN 1937-8718

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Official URL: http://dx.doi.org/10.2528/pierc17102601

Abstract

A high return loss (−30 dB), small size (100mm2) and broad bandwidth (1.5GHz) microwave bandpass filter has been designed using finite element modelling and practically realized using superconducting YBa2Cu3O7−δ (YBCO) thin films deposited on a (10 × 10mm2) LaAlO3 substrate by spin coating. Superconducting YBCO material was prepared by electrospinning echnique and solidstate reaction. The microwave properties of filter circuits were experimentally determined using the vector network analyser (VNA) at room temperature 300K) and in the presence of liquid nitrogen (77K). The solid-state filter showed high return loss (i.e., −22 dB) at operating frequency of 9.7GHz and broad bandwidth of 1.5GHz, which is consistent with the simulation results. The insertion losses for YBCO filters are ∼ −2, ∼ −1.5 and ∼ −3 dB for the normal, nanoparticle and nanorod respectively. However, the electrospun filters exhibited lower performance due to the nano-structural properties of BCO samples at nanoscale which make these samples have a large band gap compared to solid-state sample. The results indicate that the filter design and simulation result are reliable. Hence, HTS YBCO could be a potential microwave bandpass filter in industry.

Item Type:Article
Uncontrolled Keywords:YBCO, electrospun
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:86666
Deposited By: Widya Wahid
Deposited On:30 Sep 2020 09:01
Last Modified:30 Sep 2020 09:01

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