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http://dx.doi.org/10.5515/KJKIEES.2007.18.6.674

Miniaturized Dual-Mode Microstrip Ring Resonator Using Open Stub for Bandpass Filter Applications  

Choi, Sung-Soo (Department of Radio Science & Engineering, Chungnam National University)
Park, Dong-Chul (Department of Radio Science & Engineering, Chungnam National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.18, no.6, 2007 , pp. 674-679 More about this Journal
Abstract
In this paper, the size of the dual-mode microstrip ring resonator is reduced by adding four open stubs, and bandpass filters having 100 MHz bandwidth are designed at the center frequency of 2 GHz. The size of the ring resonator can be controlled by varying the capacitance of the stubs, and the bandpass filter can be designed in two cases, which are two combinations of the stubs. Two bandpass filters are designed and fabricated by using the two-stage bandpass filter circuit model of the proposed structure, and the measured results show good agreement with the simulated results.
Keywords
Ring Resonator; Bandpass Filter; Miniaturization;
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