Design and development of low loss microstrip band pass filters by using YBCO- high temperature superconducting thin film

Author

Shivhare, Jagdish

Author_Institution

Department of ECE & EI, Institute of Technology and Management, Sector-23A, Gurgaon-122 017, India

fYear

2008

fDate

21-24 Nov. 2008

Firstpage

382

Lastpage

383

Abstract

To demonstrate the suitability of HTS filters we chose a four pole chebyshev band pass filter with 80 MHz band width, insertion loss of 0.5dB at 4035 MHz center frequency on LaAlO₃ single crystal with YBCO HTS thin film. The filter was designed with four-pole quarter wave parallel-coupled line. To check the validity of filter design, two filters were fabricated using gold thin films of 0.5 microns thickness on 0.5mm thick LaAlO₃. The filter showed an insertion loss of 8.5 dB at the pass band at room temperature and 3.5 dB at 77degK.

Keywords

Chebyshev filters; band-pass filters; microstrip filters; superconducting thin films; Chebyshev band pass filter; HTS filters; four-pole quarter wave parallel-coupled line; frequency 4035 MHz; frequency 80 MHz; loss 0.5 dB; microstrip band pass filters; superconducting thin film; temperature 77 K; Band pass filters; Frequency; Gold; High temperature superconductors; Insertion loss; Microstrip filters; Superconducting filters; Superconducting thin films; Transistors; Yttrium barium copper oxide; Chebeshive; YBCO thin film; insertion loss; lanthanum aluminate; microstrip; semirigid; substrate;

fLanguage

English

Publisher

ieee

Conference_Titel

Recent Advances in Microwave Theory and Applications, 2008. MICROWAVE 2008. International Conference on

Conference_Location

Jaipur

Print_ISBN

978-1-4244-2690-4

Electronic_ISBN

978-1-4244-2691-1

Type

conf

DOI

10.1109/AMTA.2008.4762964

Filename

4762964