Abstract
Abstract This article presents wideband metamaterial cross-polarizer (MCP) structure for X-band applications. The proposed MCP consists of a splitted square-shaped resonating structure with two inner and one outer stub. It has an overall dimension of 8.6 mm × 8.6 mm. A wideband polarization conversion ratio (PCR) above 0.87 magnitude is achieved with a bandwidth of 3.49 GHz ranging from 8.8 to 12.29 GHz, which works for X (8–12 GHz) band. The PCR bandwidth of full width half maxima achieved is 4.55 GHz ranging from 8.5 to 13.05 GHz. Two distinct PCR peaks are observed at 9.44 and 11.47 GHz with PCR magnitude at 99.39 and 99.00% respectively. The normalized impedance and electromagnetic parameters (real and imaginary) curves proved the presence of metamaterial properties in the region of interest. Analysis of polarization conversion phenomena at two distinct frequencies is described with the help of electric field and current distribution. The structure is replicated using ANSYS HFSS 19.1 and measured inside anechoic chamber with the help of Vector Network Analyzer (VNA). The replicated and experimented responses obtained are almost similar to one another with adaptation due to fabrication liberality.
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