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Circularly Polarized (CP) antennas are becoming increasingly popular for wireless applications. This paper describes design and simulation of circularly polarized slot patch antenna for C-band applications. Cband has frequency range from 4 to 8 GHz that is used for satellite communication transmissions, some Wi-Fi devices, and cordless telephone. For circular polarization, the axial ratio (AR) less than 3 dB can be produced by inserting a rectangular stub from the ground plane towards thedoi:10.21917/ijme.2017.0080 fatcat:lpxe6jlhsjfizosvyusvw4a3a4