Short-Length and High-Aperture-Efficiency Horn Antenna Using Low-Loss Bulk Anisotropic Metamaterial

Author

Yingran He ; Ning Ding ; Lingfei Zhang ; Wenjing Zhang ; Biao Du

Author_Institution

54th Res. Inst., China Electron. Technol. Group Corp., Shijiazhuang, China

Volume

14

fYear

2015

fDate

7/7/1905 12:00:00 AM

Firstpage

1642

Lastpage

1645

Abstract

An empty horn antenna is filled with a bulk anisotropic metamaterial to enhance its gain and aperture efficiency. Radiation patterns in both the E-plane and the H-plane are improved owing to the anisotropic permittivity and the anisotropic permeability. Aperture efficiency over 70% is achieved despite of its short longitudinal length ~ λ₀. Insertion loss below 0.18 dB and energy reflection below - 20 dB are obtained, which are quite small compared to most metamaterial-based antennas. The metamaterial-filled horn is fabricated and tested, and the measured results agree very well with the simulated results.

Keywords

antenna radiation patterns; horn antennas; metamaterial antennas; permeability; permittivity; E-plane; H-plane; anisotropic permeability; anisotropic permittivity; aperture efficiency enhancement; energy reflection; gain enhancement; high-aperture-efficiency horn antenna; insertion loss; low-loss bulk anisotropic metamaterial; radiation pattern improvement; short-length horn antenna; Aperture antennas; Gain; Horn antennas; Magnetic materials; Metamaterials; Anisotropy; aperture efficiency; horn antenna; metamaterial; short length;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2015.2416005

Filename

7065277