Patch antennas filled using different material loadings, both homogeneous and dispersive, are reviewed in order to assess its FBW value. A compact formulation proposed by Yaghjian and Best  to compute the FBW of antennas is successfully applied.
CitationCalafell, I. [et al.]. Microstrip patch antenna design using artificial material loadings. A: European Conference on Antennas and Propagation. "4th European Conference on Antennas and Propagation". Barcelona: 2010, p. 1-5.
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