Title :
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
fDate :
7/7/1905 12:00:00 AM
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;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2015.2416005
