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Please use this identifier to cite or link to this item:
http://ir.ncue.edu.tw/ir/handle/987654321/10693
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| Title: | Cross- coupled YBCO BPFs with wide upper stopband using quarter-wavelength stepped-impedance resonators |
| Authors: | Hsu, Chung-I G.;Wang, Li-Ming;Chen, Li-Shian;Lee, Ching-Her |
| Contributors: | 電子工程學系 |
| Date: | 2007-04
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| Issue Date: | 2012-05-29T01:21:44Z
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| Publisher: | Physical Society of the Republic of China |
| Abstract: | This paper presents a cross-coupled high-temperature superconducting (HTS) bandpass filter (BPF) design using quarter-wavelength stepped-impedance resonators (λ/4 SIRs) for the wireless communication applications. A pair of transmission zeros associated with the cross-coupled configuration is designed to be placed near the passband skirts, greatly sharpening the rolling-off at the passband edges. The spurious-passband center frequency of the BPF using λ/4 SIRs is simulated to be higher than that of the BPF adopting λ/2 SIRs. A BPF using λ/4 SIRs, conceived to be smaller than the corresponding BPF using λ/2 SIRs, has been fabricated by double-sided depositing patterned YBCO film on a 10-mm-square and 0.5-mm-thick LaAlO3 substrate and by putting them in a copper housing. The measured results revealed that this BPF has a very wide stopband bandwidth beyond the desired passband. |
| Relation: | Chinese Journal of Phys., 45(2-II): 273-280 |
| Appears in Collections: | [電子工程學系] 期刊論文
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Files in This Item:
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Size | Format | |
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| 2050300110010.pdf | 75Kb | Adobe PDF | 472 | View/Open |
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