Electrically Small Antennas with Dielectric, Magneto-Dielectric and Metamaterial Loading

Conference Paper · May 2007with12 Reads
DOI: 10.1109/LAPC.2007.367431 · Source: IEEE Xplore
Conference: Antennas and Propagation Conference, 2007. LAPC 2007. Loughborough
With recent advances in manufacture and study of high dielectric ceramics, magneto-dielectrics and metamaterials, there have been renewed interests in studying electrically small antennas. Prospective features of aforementioned loading schemes have been discussed by various research groups, however, there lacks of a fair comparison in antenna performance taking into consideration of material dispersion and losses. This paper presents a comparative study on antenna performance, in particular, the beam pattern, gain, efficiency and bandwidth of three types of material/metamaterial loaded antennas as a function of physical size, electrical size and frequency. Selected antennas are built and tested, measurement results are in good agreement with theoretical predictions.
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