Title :
A Directive Resonator Antenna Using Degenerate Band Edge Crystals
Author :
Yarga, Salih ; Sertel, Kubilay ; Volakis, John L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Ohio State Univ., Columbus, OH
fDate :
3/1/2009 12:00:00 AM
Abstract :
A new small antenna formed by a periodic assembly of two-tone dielectrics (Barium-titanate and Alumina) emulating an anisotropic medium is presented. Directive radiation characteristics are achieved when operated close to the band edge frequencies of a class of anisotropic photonic crystals supporting degenerate band edge (DBE) modes. Unique aspects of the antenna design are its smaller size (0.79 lambda0 times 0.80 lambda0 times 0.28 lambda0) and nearly optimum aperture efficiency. The subject 3-D assembly, fed by a slot on a ground plane, achieved a directivity of 10.17 dBi. This communication presents the design of the 3-D assembly using full-wave simulations and provides experimental verification of the overall antenna performance.
Keywords :
dielectric resonators; directive antennas; photonic crystals; anisotropic medium; anisotropic photonic crystals; band edge frequencies; degenerate band edge crystals; degenerate band edge modes; directive radiation characteristics; directive resonator antenna; periodic assembly; two tone dielectrics; Anisotropic magnetoresistance; Apertures; Assembly; Dielectric resonator antennas; Directive antennas; Frequency; Metamaterials; Periodic structures; Photonic crystals; Resonance; Artificial anisotropic dielectrics; degenerate band edge crystals; directive antennas; electromagnetic band gap structures; periodic structures; photonic crystals;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2009.2013451
