Abstract
ABSTRACTIn this paper, a novel compact dual‐band dual‐polarized microstrip stacked patch antenna suitable for base stations is presented. The first and second frequency bands cover the GSM and DCS bands respectively. The antenna layout consists of a single circular patch with four symmetrical slots along its periphery mainly responsible for the upper frequency band and one cross‐shaped slot at the center, mainly responsible for the lower one. The stacked configuration is considered for bandwidth enhancement. The antenna utilizes a simple orthogonal feed network for the two polarizations, which feeds the patch through a relatively wide cross‐shaped slot at the antenna's ground plane, placed centrally with respect to the patch. The antenna bandwidth completely covers the two desired bands with relatively good return loss and also exhibits polarization isolation of greater than 33 dB and 40 dB in the lower and upper frequency bands respectively. In addition, the antenna has good radiation characteristics in terms of cross‐polarization in both bands of interest. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2557–2559, 2016
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