Title :
Characterization of a volumetric metamaterial realization of an artificial magnetic conductor for antenna applications
Author :
Erentok, Aycan ; Luljak, Paul L. ; Ziolkowski, Richard W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Arizona, Tucson, AZ, USA
Abstract :
The design, fabrication and measurement of a volumetric metamaterial realization of an artificial magnetic conductor (AMC) is presented. In contrast to most current realizations of AMCs, such as the mushroom and the uniplanar compact photonic bandgap surfaces, the present design has no perfect electric conductor ground plane. The perfect magnetic conductor properties were designed with capacitively loaded loops for X band operation at 10 GHz. Very good agreement between the numerical and experimental scattering results was achieved. The performance of a dipole antenna radiating in the presence of this volumetric metamaterial AMC is quantified numerically. Resonant interactions of the antenna and metamaterial structure lead to a significant enhancement of the radiated field amplitudes and isolation measured as the front-to-back ratio.
Keywords :
dielectric materials; dielectric resonance; dipole antennas; electromagnetic wave scattering; metamaterials; microwave antennas; photonic band gap; 10 GHz; X band operation; antenna applications; antenna resonant interactions; artificial dielectrics; artificial magnetic conductor; capacitively loaded loops; dipole antenna radiating; electric conductor ground plane; isolation measurement; metamaterial structure; radiated field amplitudes; scattering; uniplanar compact photonic bandgap surfaces; volumetric metamaterial realization; Antenna measurements; Conductors; Dipole antennas; Fabrication; Magnetic materials; Magnetic properties; Magnetic resonance; Metamaterials; Photonic band gap; Volume measurement;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2004.840534
