ANTENNA DEVICE, RADIO COMMUNICATION DEVICE, AND RADAR DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an antenna device having a variable main lobe direction that prevents reduction in antenna gain and increase in a side lobe level due to a radome.SOLUTION: An antenna device 10 comprises: an antenna element 2 having a main lobe in a prescribed direction; and a radome 1 provided such that radio waves of the main lobe and side lobe of the antenna element 2 pass through. The radome 1 comprises: a convergence lens structure section 11 for converging the radio wave of the main lobe passing through the radome 1; and divergence lens structure sections 12 and 13 for spreading the radio wave of the side lobe passing through the radome 1.SELECTED DRAWING: Figure 1