Reduction of sidelobe radiations of the standard pyramidal horn using a thin metamaterial lens. Issue 24 (1st November 2016)

• Record Type: Journal Article
• Authors: Chen, Xuxiang; Ge, Yuehe; Bird, Trevor S.
• Is Part Of: Electronics letters. Volume 52:Issue 24(2016)
• Page Start: 1973
• Page End: 1974
• Publication Date: 2016-11-01
• Subjects: aperture antennas -- dipole antenna arrays -- antenna radiation patterns -- horn antennas -- metamaterial antennas -- lens antennas -- microstrip antenna arrays; standard pyramidal horn sidelobe radiation suppression -- thin single‐layer metamaterial lens -- metallic dipole array -- single dielectric layer -- electromagnetic field -- horn aperture -- low‐sidelobe radiation -- H‐plane -- E‐plane -- prototype lens measurement -- printed antenna; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2016.3336
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : 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.