A design of high-gain Vivaldi antenna and its array research

摘要

In order to meet the request of ultra wideband (UWB) system to antenna, In this paper, a kind of Vivaldi antenna with ripple is designed, and its array is studied. Its working frequency band is from 400MHz to 900MHz, the gain of the antenna array unit in the low frequency band is 5.11dB, and 8.68dB in the high frequency band. In addition, we studied the antenna array respectively according to Dolph-chebyshef series distribution array of sequence distribution, the test results showed that Dolph-Chebyshef series distribution array can improve the gain of the antenna array and can reduce the side lobe level, the gain in the low frequency band can reach 26.7dB and gain at high frequency band to 28.4dB. The simulation results show that the array antenna has ideal gain effect and excellent radiation performance in the operating frequency band.