Title :
Realizing Huygens sources through spherical sheet impedances
Author :
Pfeiffer, Carl ; Grbic, Anthony
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
An electrically small Huygens source realized as two concentric spherical sheet impedances is investigated. Closed-form expressions for the electric and magnetic polarizabilities, the directivity (D), and the fractional scattering bandwidth (FBW) are found. An impedance matched, electrically small antenna (ESA), of the same topology, is presented with a directivity of 7.6 dB. The antenna is simply fed with a coaxial cable.
Keywords :
antenna feeds; coaxial cables; directive antennas; electric impedance; electromagnetic wave scattering; antenna fed; closed-form expressions; coaxial cable; concentric spherical sheet impedances; directivity; electric polarizabilities; electrically small Huygens source; fractional scattering bandwidth; magnetic polarizabilities; spherical sheet impedances; Bandwidth; Dipole antennas; Impedance; Magnetic resonance; Directivity; Huygens source; electrically small antennas; metamaterials;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6349335
