An Element of UWB Phased Array Antenna

doi:10.3969/j.issn.1006-2475.2019.09.013

Abstract

Abstract: To improve the ultra-wideband and wide-angle scanning performance of phased array antennas, an all-metal Vivaldi antenna element with ultra-wideband characteristics is designed. The model of the Vivaldi antenna is built and its size is optimized with the simulation software CST. Finally, the VSWR is less than 2 in the bandwidth from 2 to 18 GHz. To solve the problem of scan blindness, an innovative structure with a thicker bottom is proposed, which changes the current path and eliminates the scan blindness, thus achieving a wide scanning angle of ±45° in the whole bandwidth. The results indicate that the antenna has ultra-wideband characteristics and wide scanning angle. So it can be applied as UWB phased array antenna element.

Key words: ultra-wideband, wide-angle scanning, phased array antenna, Vivaldi antenna

CLC Number:

TN957.2

HOU Jian-chun1,2， ZHAO Feng-jun2， WU Liang2， YUAN Cheng1,2. An Element of UWB Phased Array Antenna[J]. Computer and Modernization, doi: 10.3969/j.issn.1006-2475.2019.09.013.

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