Xinrong Shi, Yi-Hao Lu, Jie Shi, Yangyang Xiong, Xudong Lou
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High-Gain Vivaldi Antipodal Broadband Antenna with a CSRR Array and T-shaped Strips
An ultra-wideband Vivaldi antipodal antenna with high gain is presented. A CSRR array and T-shaped strips were developed to embedded in the tapered slot antenna, which improves VSWR and gain performances, especially in the low frequency regions. Simulation results have been presented with a fractional impedance bandwidth of 186% from 1 GHz to 28 GHz for VSWR<2 and gains better than 2dB. The simulated antenna gain of up to 17.3dB is achieved, making the antenna suitable for metrology and test in the fifth generation mobile communication.