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A compact and high-performance microstrip diplexer is designed by using stub-loaded parallel-coupled lines and half-wavelength resonators. First, the traditional equivalent circuit of the parallel-coupled line is extended to consider the length effect of the loaded stub. Second, by choosing the length of the stub, the multiple transmission zeros can be introduced and allocated to reduce the coupling...
In this paper, we propose a transmission line model and detailed design process for designing the common-mode suppression filter on multi differential signal pairs. Based on proposed model, we can easily define the geometric parameters of the common-mode filter, and predict its common-mode suppression bandwidth and resonant frequency. The proposed model is verified on a common-mode suppression filter...
In this paper, we proposed a wideband common-mode suppression filter for multi differential signal pairs. The method of the proposed design is utilized by using Defected Ground Structure (DGS) of two quarter-wavelength resonators with the mutual coupling effect to achieve the wideband common-mode suppression. For observing one pair differential signal lines in the frequency domain analysis, the differential-mode...
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