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Analysis of Stepped Impedance Lowpass Filter with Coupled Open Stubs  

김성일 (아주대학교 전자공학부)
기철식 (아주대학교 전자공학부)
박익모 (아주대학교 전자공학부)
임한조 (아주대학교 전자공학부)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.13, no.10, 2002 , pp. 1078-1082 More about this Journal
Abstract
In this paper, we have studied the dependence of insertion loss of a microstrip stepped impedance lowpass filter with coupled open stubs. Coupling mechanisms in the filter depend not only on the transmission line width of the filter but also the gap width of coupled open stubs and three attenuation poles are created with the proper conditions. Also edge capacitance between open stubs play an important role in having three attenuation Poles. We verify the results by obtaining [S] matrices.
Keywords
Stepped Impedance Lowpass Filter;
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