Compact quad-band bandpass filter based on uniform impedance stub-loaded resonators
Published online by Cambridge University Press: 24 April 2014
Abstract
A new quad-band bandpass filter for Global System for Mobile Communications, Wireless Local Area Network, and Worldwide Interoperability for Microwave Access is designed and fabricated using the stub-loaded resonator (SLR) technology without complex fabrication process, such as via-hole or multi-layer substrate. Owing to the embedded SLR, the proposed quad-mode resonator is compact. Equivalent circuits of the proposed quad-mode resonator are analyzed in detail, and high design freedom is shown because of shifting the passband frequencies individually. Good passband selectivity and isolation of the each passband at 1.8, 2.4, 3.5, and 5.2 GHz can be well achieved due to the transmission zeros appeared near the each passband edges. Experimental results show good agreement with the simulated results.
Keywords
- Type
- Research Papers
- Information
- International Journal of Microwave and Wireless Technologies , Volume 7 , Issue 2 , April 2015 , pp. 121 - 126
- Copyright
- Copyright © Cambridge University Press and the European Microwave Association 2014
References
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