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In this letter, a novel broad-band E-plane filter with improved stop-band performance is proposed. The spurious pass bands commonly encountered with standard E-plane filters are suppressed by integrating band-stop structures into the coupling elements of the filter and are realized by fin-line post structures. By optimizing the geometry of fin-line post structure, the proposed filter achieves improved...
In this paper, a compact bandpass filter with high selectivity and wide stopband using the dual-layer structure is proposed. Fundamental-resonance with two close transmission zeros can be employed and adjusted by the hybrid microstrip/coupled-meander-shape defected ground structure (CMSDGS) cell. Then, based on these cells, an interdigital-coupled scheme with short-stubs is introduced to provide strong...
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