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Title: Cross-coupled dual-spiral high-temperature superconducting filter
Authors: Tan, C.Y. 
Chen, L. 
Lu, J.
Rao, X.S. 
Ong, C.K. 
Keywords: Cross coupling
Dual-spiral resonators
High-temperature superconductor
Microstrip bandpass filter
Issue Date: Jun-2003
Citation: Tan, C.Y., Chen, L., Lu, J., Rao, X.S., Ong, C.K. (2003-06). Cross-coupled dual-spiral high-temperature superconducting filter. IEEE Microwave and Wireless Components Letters 13 (6) : 247-249. ScholarBank@NUS Repository.
Abstract: A microstrip bandpass filter implemented with dual-spiral resonators is described in this letter. The dual-spiral resonators make the filter compact and allow implementation of positive and negative inter-resonator couplings. Implementation of the positive and negative couplings is used to introduce a pair of finite frequency transmission-zeros in the filter response. The two zeros are designed to be close to the passband, thus improving the selectivity of the filter. As an example, a four-stage cross-coupled dual-spiral filter is designed and fabricated using superconducting YBa2Cu3O7-δ thin films deposited on LaAlO3 substrate.
Source Title: IEEE Microwave and Wireless Components Letters
ISSN: 15311309
DOI: 10.1109/LMWC.2003.814603
Appears in Collections:Staff Publications

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