Abstract
A dual frequency resonance antenna achieved by introducing L-strip feed in circular disk patch is analysed by using circuit theory concept. The resonance frequency is found to be 5.19 and 10.44 GHz for lower and upper resonance frequency respectively and the bandwidth of the proposed antenna for lower and upper resonance frequency is found to be 11.54 and 13.12 %. When the notch is cut on the circular disk patch dual resonance frequency is shifted higher side and the resonance frequency is found to be 5.84 and 10.54 GHz. It is found that the resonance frequency is observed 1.860 and 1.824 respectively. It is easy to adjust the higher and lower band by changing the dimensions of L-strip. It is found that the resonance frequency also depends on the notch dimensions. The theoretical results are compared with IE3D simulation results which are in close agreement.
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