Abstract
This work discusses the design of a triple-band and dualpolarized high gain circularly polarized (CP) antenna based on artificial transmission line (ATL) based metamaterial (MTM) structures. To enhance the gain and extend the axial ratio (AR) beamwidth, a new multi-band artificial magnetic conductor (AMC) based metasurface (MS) is placed below the radiating triple-band antenna. Due to this, the impedance bandwidth (IBW), gain and AR beamwidth is enhanced. The intended antenna provides overall dimensions of $0.36\lambda_{0}\times 0.36\lambda_{0}\times 0.10\lambda_{0}$ at2.57 GHz. Also, the antenna is capable of providing positive gain value and extended AR beamwidth for theta $=\pm 58^{0}$ and $\phi=0^{0}$ to 3600 at 2.45 GHz. Hence the intended antenna is suitable for working in small satellite applications at S and C bands.
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