| A Coupled-Line Type Waveguide Bandpass Filter using Normalized Impedance Concept |
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Jun-Seok Park1, Young-Tae Kim2, Sun-Hyeong Kim2, Jae-Bong Lim1, Hong-Goo Cho1 |
1School of Electrical Engineering, College of Engineering, Kookmin University
2Division of Information Technology Engineering, Soonchunhyang University |
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| Abstract |
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In this paper, a coupled-line type waveguide bandpass filter is newly proposed. The proposed bandpass filter configuration consists of magnetically coupled waveguide cavities. In order to show the background of the proposed waveguide bandpass filter, the general coupled line TEM bandpass filter theory, which means the coupled line filter with arbitrary coupled line length and impedance level, will be briefly introduced. Calculations for the even- and odd-mode wave impedance of a coupled line waveguide structure are achieved based on the normalized impedance concept for a broad-side coupled waveguides by using vector finite element method(VFEM) calculation. Measured result of an implemented coupled-line type waveguide filter is presented. |
| Key words:
Waveguide Bandpass Filter, Normalized Impedance Concept, Vector Finite Element Method |
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