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http://dx.doi.org/10.6109/jkiice.2011.15.10.2065

Extracting Method of External Quality Factor(Qe) Using Phase Response  

Park, Young-Bae (신라대학교 전자공학과)
Kim, Gi-Rae (신라대학교 전자공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.15, no.10, 2011 , pp. 2065-2071 More about this Journal
Abstract
The external quality factor ($Q_e$) is controlled by coupling condition between resonator and input/output ports in design of microwave filter. In this paper, we represent extracting method of external quality factor using phase response for resonator with input/output ports according to position of feed line from microstrip line resonator. The results regarding to position, coupling gap and line width for tapped line and coupled line structure are represented, and we got the exact $Q_e$ value from the this method. This results will be applied to coupled resonator filter design.
Keywords
junction microstrip line resonator; rectangular open loop resonator; phase characteristic; External Quality Factor;
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