Abstract
A one-dimensional electromagnetic bandgap (1-D EBG) ground plane was designed and characterized. The 1-D EBG ground plane, composed of metal patches, metal lines, and a ground plane, has in-phase re∞ection characteristics when the polarization of the incident electromagnetic waves is parallel to the direction of the EBG unit- cell array. The proposed 1-D EBG ground plane was applied to the design of low-proflle directive dipole antennas. The radiators of the designed antennas could be placed very close to the 1-D EBG ground plane without noticeable performance degradation of the antennas. In particular, the dipole antenna designed with the 1-D EBG ground plane and directors has higher directivity and a better F-B (front- to-back) ratio as compared to a conventional dipole antenna backed with a normal ground plane.
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