Suspended stripline over mushroom-like shorted metallic patches and its application to the dual-frequency dual-polarization antenna

This paper introduces a suspended stripline over mushroom-like SMPs that has excellent band stop filter characteristics, and apply it to the conventional DFDP antenna in order to enhance isolation. Since the structure of the suspended stripline over the SMP provides strong coupling between the feedline and the SMP, a significant skirt rejection band and near 0 dB the insertion loss outside the rejection band can be achieved with only two SMP unit cells