In this paper, a balanced Vivaldi antenna has presented. The exponential and tapered design for edge transitions and feeding is considered for enhancing the bandwidth of proposed antenna. The proposed design shows tri-band operation over 3-14 GHz frequency range with VSWR values 1.12, 1.12, 1.25 and bandwidths 7.6%, 11.4%, 2.8% at three operating frequencies 3.9 GHz, 8.7 GHz, 13.9 GHz, respectively. The proposed antenna uses at satellite broadcasting applications. All simulations are performed by HFSSvl3.0 software.
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