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A new multi-band left-handed unit cell which uses Hilbert grounded patch is proposed and compared with the previously reported configuration which uses grounded square patch. The novel unit cell exhibits three distinct passbands and one deep pole. By changing specific geometrical parameters of the unit cell, three passbands can be independently positioned. The Hilbert patch provides an additional...
In this paper, a novel bandpass filter using microstrip-via-CPW resonator is proposed. This symmetric resonator can support two modes. By introducing source/load coupling, two additional zeros can be generated. The whole structure was meandered for size reducing. Advantages of using this type of filter are not only its low insertion loss, but also its controllable transmission zeros. Both simulated...
In this paper, the substrate integrated waveguide (SIW) cavity resonator is proposed. The coupling between SIW cavity and microstrip line is achieved by the electric field at the vertical center plane along the propagation direction. Unlike the conventional cavity coupling structure that shows absorption characteristics at the resonant frequency, it can be easily integrated into planar form. The cavity...
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