مرکز منطقه ای اطلاع رساني علوم و فناوري - Cross-coupled narrow-band filter for the frequency range of 2.1 GHz using YBCO resonators with artificial magnetic pinning lattices

DocumentCode :

836415

Title :

Cross-coupled narrow-band filter for the frequency range of 2.1 GHz using YBCO resonators with artificial magnetic pinning lattices

Author :

Wang, L.M. ; Hsieh, Chang-Hao ; Chang, Chih-Chang

Author_Institution :

Dept. of Electr. Eng., Da-Yeh Univ., Chang-Hwa, Taiwan

Volume :

Issue :

fYear :

2005

fDate :

6/1/2005 12:00:00 AM

Firstpage :

1040

Lastpage :

1043

Abstract :

Narrow-band microstrip cross-coupled band-pass filters based on the quadruplet geometry are designed for wireless-communication applications. We have fabricated the high-T_c superconducting filters by pattering YBa₂Cu₃O_y (YBCO) films deposited on LaAlO₃ substrates. The flux pinning in YBCO resonators is increased with an artificial magnetic lattice of Nd_0.2Sr_0.8MnO₃ (NSMO) pinning dots. The 4-pole 15-mm-square filter has a pair of transmission zeros near the pass-band edge, a 2.18-GHz center frequency with a 9.8-MHz bandwidth and a 1.48-dB minimum insertion loss at 77 K. The results are discussed and compared with that of an identical YBCO filter without NSMO pinning dots. The influences of the flux pinning on filter performance are discussed.

Keywords :

band-pass filters; barium compounds; flux pinning; lanthanum compounds; manganese compounds; microstrip filters; microstrip resonators; mobile communication; neodymium compounds; strontium compounds; superconducting filters; yttrium compounds; 2.1 GHz; 2.18 GHz; 77 K; 9.8 MHz; LaAlO₃; NSMO; Nd_0.2Sr_0.8MnO₃; YBCO; YBa₂Cu₃O₇; artificial magnetic pinning lattices; band-pass filters; cross-coupled filters; cross-coupling; flux pinning; high-temperature superconductors; microstrip filters; microstrip resonators; narrow-band filter; pinning dots; quadruplet geometry; superconducting filters; transmission zeros; wireless communication; Band pass filters; Frequency; Lattices; Magnetic flux; Magnetic separation; Narrowband; Resonator filters; Superconducting filters; Superconducting magnets; Yttrium barium copper oxide; Bandpass filter; cross-coupling; flux pinning; high-;

fLanguage :

English

Journal_Title :

Applied Superconductivity, IEEE Transactions on

Publisher :

ieee

ISSN :

1051-8223

Type :

jour

DOI :

10.1109/TASC.2005.850192

Filename :

1439819

Link To Document :

https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=836415