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J Electromagn Eng Sci > Volume 16(1); 2016 > Article
Journal of Electromagnetic Engineering and Science 2016;16(1):29-34.
DOI: https://doi.org/10.5515/JKIEES.2016.16.1.29   
Design of a Switchplexer Based on a Microstrip Ring Resonator with Single-Switch Operation
Wook-Ki Park1, Chi-Hyung Ahn2, In-Ryeol Kim3, Soon-Soo Oh3
1Technology Convergence Center, Incheon Technopark
2New Transportation Systems Research Center, Korea Railroad Research Institute
3Department of Electronic Engineering, Chosun University
Correspondence:  Soon-Soo Oh,Email: ssoh@chosun.ac.kr
This paper proposes a reconfigurable microstrip diplexer, also known as a switchplexer, for use with single-switch operation of frequency band and output path. The proposed switchplexer is composed of a rectangular ring resonator and a switch on a shorting pin, which is inserted between the ring resonator and the ground plane. The rotated main current distributions occurring at different switch statuses provide the diplexer's different operating bands and different output ports. The performance of the simply designed switchplexer is successfully demonstrated via simulation and measurement.
Key words: Diplexer, Filter, Reconfigurable Diplexer, Switchplexer
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