Reduction of sidelobe radiations of the standard pyramidal horn using a thin metamaterial lens
- Publisher:
- Institution of Engineering and Technology (IET)
- Publication Type:
- Journal Article
- Citation:
- Electronics Letters, 2016, 52, (24), pp. 1973-1974
- Issue Date:
- 2016-11-24
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Electronics Letters - 2016 - Chen - Reduction of sidelobe radiations of the standard pyramidal horn using a thin.pdf | Published version | 575.11 kB |
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A method is reported to suppress the sidelobe radiation of a standard pyramidal horn using a thin single-layer metamaterial lens. The metamaterial lens is composed of two identical metallic dipole arrays printed on both sides of a single dielectric layer. By placing the metamaterial lens inside a standard pyramidal horn, the electromagnetic fields over the horn aperture can be modified, resulting in low-sidelobe radiation in both the E- and H-planes of the horn. The measurement of a prototype lens gave a 10 dB reduction of the first sidelobe level in the E-plane, compared with that of the original air-filled pyramidal horn. Other design possibilities with a compensating lens are suggested.
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