Improved design of a low sidelobe pyramidal horn antenna loaded with a metasurface lens

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Conference Proceeding
2017 IEEE Antennas and Propagation Society International Symposium, Proceedings, 2017, 2017-January pp. 1951 - 1952
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© 2017 IEEE. A technique for the design of low side-lobe pyramidal horn antennas loaded with a thin single-layer metasurface lens is extended using a subwavelength-size element. The single dielectric lens is printed on both sides with two identical subwavelength metallic square-ring resonators arrays. By placing the metasurface lens inside an existing standard horn antenna, both amplitudes and phases of electromagnetic waves can be controlled. An example is given of a metamaterial lens and horn (metahorn) antenna that simultaneously possesses high gain and low sidelobes. The measurement of this metahorn shows a 35-dB reduction of the first sidelobe level in the E plane, compared with that of the original air-filled standard pyramidal horn.
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