Low-profile Hybrid-mode Antenna Providing Near-hemispherical Field-of-view Coverage
Keywords:
Broad beam, hemispherical coverage, hybrid modes, low profile, wide-angle scanningAbstract
The hybrid-mode model (HMM) combining monopole and dipole radiation modes can provide near-hemispherical coverage but has a high profile. To reduce the profile of HMM, a modified HMM is presented in this paper using a dipole radiator and a magnetic current loop radiator. Based on the modified model, a low-profile on-board antenna is proposed. When the side length of the ground is infinite, the 3-dB beamwidths in the xz plane and yz plane of the proposed antenna are both 180°. When the side length of the ground is finite, the proposed antenna can provide a near-hemispherical field-of- view coverage. The design example demonstrates the practicability of the modified HMM and the proposed antenna can be used in wide-angle scanning arrays and rich-multipath communication systems.
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References
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