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A dual-wideband bandpass filter using open/shorted coupled lines
Published online by Cambridge University Press: 11 September 2018
Abstract
A compact dual-wideband (DWB) bandpass filter utilizing open-shorted coupled lines (OSCL) is proposed in this paper. The introduction of the folded structure not only reduces the overall size but also contribute to the split of the transmission zero (TZ), which improves the selectivity effectively. Six transmission poles and five TZs are realized utilizing the shorted-circuit stub and OSCL. The characteristic of the flexible adjustment method of TZs guarantees an independently wide adjustable range of the bandwidth. For demonstration, a DWB filter (3 dB bandwidth 120 and 28%, respectively) is designed and fabricated. The filter is compact and has the characteristics of extraordinary wide bandwidth, low insertion loss, as well as high selectivity.
- Type
- Research Papers
- Information
- International Journal of Microwave and Wireless Technologies , Volume 10 , Issue 10 , December 2018 , pp. 1113 - 1117
- Copyright
- Copyright © Cambridge University Press and the European Microwave Association 2018