Abstract
This paper proposes a variable thickness radome for application in millimeter-wave (mm-wave) radar at missile warhead, so as to figure out the radiation distortion caused by uniform thickness radome (UTR). By choosing a appropriate condition of wall thickness of radome, the adverse effect of field reflection and phase delay on radiation pattern is minimized. Moreover, the radome thickness is further optimized through simulation, by which the ripple variation of main beam is effectively mitigated and radiation pattern become more symmetric. Simulated results show that the radiation performance of the 24-GHz off-center antenna array with our proposed radome has been improved a lot in terms of beam symmetry and broadside gain level.
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