Measurements of Wideband Spectrum

In modern times needs for Broadband application has increased. In resent year many work done by design of antenna system. T-shape slot antenna has nearly omni directional radiation patter for all operating bands and gain variation of the range in each of the bands can be less than 3dBi. The maximum impedance bandwidth reaching about 121 % has been obtained and the size of the proposed antenna is reduced by 26.5 %. In this paper we compare the parameters of T-shape slot antenna, Micro strip patch antenna, Horn antenna, slot antenna for wideband application.