Design and Fabrication of 5 GHz Miniaturized Bandpass Filter Using Superconducting Microstrip Quasi-Spiral Resonators

Author

Ono, S. ; Harada, Y. ; Saito, A. ; Kimura, M. ; Sekiya, N. ; Hirano, S. ; Ohshima, S. ; Iriuda, H. ; Takahashi, T. ; Yoshizawa, M.

Author_Institution

Yamagata Univ., Yonezawa

Volume

17

Issue

2

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

890

Lastpage

893

Abstract

We propose a miniaturized novel microstrip quasi-spiral resonator (QSR) system composed of rewound-type spiral resonator and c-type spiral resonator. We have also designed a 5 GHz superconducting 4-pole bandpass filter (BPF) using QSR for international mobile telecommunication (IMT)-advanced base station receiver applications. The filter has been fabricated using a single-sided MgB₂ superconducting thin film deposited by thermal co-evaporation technique. The measured performance of the BPF has been found to show close agreement with the simulated one.

Keywords

band-pass filters; magnesium compounds; microstrip resonators; mobile communication; superconducting resonators; superconducting thin films; type II superconductors; vacuum deposition; base station receiver applications.; c-type spiral resonator; frequency 5 GHz; international mobile telecommunication; miniaturized bandpass filter; rewound-type spiral resonator; superconducting microstrip quasispiral resonators; superconducting thin film; thermal coevaporation; Band pass filters; Base stations; Fabrication; Microstrip filters; Microstrip resonators; Radio frequency; Resonator filters; Spirals; Superconducting filters; Superconducting thin films; ${rm MgB}_{2}$ thin film; Bandpass filter; miniaturized superconducting filter; quasi-spiral resonator (QSR);

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2007.897707

Filename

4277647