Abstract
A novel half Maxwell fish-eye (HMFE) lens is presented, which can be employed to broaden the beamwidth. The novel HMFE lens is a deformation of traditional one. To verify the proposed principle, a common circularly polarized microstrip antenna with a 100mm-diameter ground working at 7.8GHz is chosen as a radiating source. The radiation patterns of the antenna with and without the novel HMFE lens have been simulated. The results reveal that by loading the novel HMFE lens, 3-dB beamwidth can be extended from 70° to 160° for an antenna even in the case of the large dimensional ground. Good circular polarization is achieved as well.
Published Version
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