DocumentCode
432697
Title
5-GHz high temperature superconducting filter using coplanar waveguide quarter wavelength resonator
Author
Kawai, Kunihiro ; Satoh, Kei ; Narahashi, Shoichi ; Zhewang Ma ; Kobayashi, Yoshiyuki
Author_Institution
NTT DoCoMo, Inc., Wireless Laboratories, 3-5 Hikarino-oka, 239-8536 Yokosuka, Japan
Volume
2
fYear
2004
fDate
12-14 Oct. 2004
Firstpage
1109
Lastpage
1112
Abstract
This paper presents a 5-GHz high temperature superconducting (TITS) filter that employs coplanar waveguide quarter wavelength resonators. The fabricated four-pole Chebyshev HTS bandpass filter applies photolithography and ion milling to form a precise filter circuit pattern on Yttrium Barium Copper Oxide film. The filter has a center frequency of 5.02 GHz, a 4.0% (200 MHz) equal ripple bandwidth, 0.13 dB ripple, and 0.22 dB average insertion loss, all measured at 60 K. This insertion loss is quite low compared to that of the HTS filters employing CPW resonators reported so far.
Keywords
Band pass filters; Bandwidth; Circuits; Coplanar waveguides; Frequency; High temperature superconductors; Microwave filters; Resonator filters; Superconducting filters; Superconducting microwave devices;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 2004. 34th European
Conference_Location
Amsterdam, The Netherlands
Print_ISBN
1-58053-992-0
Type
conf
Filename
1419027
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