Abstract
A monopole antenna is a type of radio antenna formed by replacing one half of a dipole antenna with a ground plane at right-angles to the remaining half. Monopoles may be used from a few hundred KHz through several GHz in frequency and are commonly one-quarter of a wave length long, but may be shorter or longer. Monopole antennas exhibit high gain and improved efficiency in a surprisingly small package. Monopole antenna can be designed to exhibit wideband capabilities. The different available monopole antennas are dual band printed monopole antenna, cross-slot monopole antenna, U-shaped monopole antenna, triangular shaped monopole antenna and a wideband monopole antenna. This paper deals with the comparison obtained from the results such as return loss, VSWR, current distribution, and the radiation pattern of simple U-shaped and complete monopole antenna. Keywords- CPW, CST, FR4, LAN, WiMAX
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