IEEE Transactions on Antennas and Propagation · 2012 · 41 citations · 16 references
EngineeringElectrical EngineeringMaterials ScienceAntennasMagnetic MaterialsMicrowave EngineeringAntenna DesignAntenna MiniaturizationAntenna RadiationDielectric MaterialsMicrowave AntennasSmall AntennasAntenna Substrate DesignAntenna Substrate MaterialsChip AntennasCompact Antenna DesignElectrically Small AntennasLow-loss Dielectric MaterialsMiniaturized AntennasPrinted Antennas
This communication presents practical implementations of small antennas using magneto-dielectric (MD) materials. We first describe the manufacturing process of MD materials with a low-loss property (tan δ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">m</sub> <; 0.1) up to 2 GHz. With this MD material as a substrate, miniaturized handset antennas are developed and the radiation performances are compared with the dielectric substrate antenna. The measured results show that the required volume of MD chip antenna is minimized to 25 mm × 5 mm × 3 mm at cellular frequency and the bandwidth is better compared to dielectric chip antennas. In addition, MD loaded antenna is designed to improve the performance of conventional antennas on the plastic carriers.
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Fundamental Limitations of Small Antennas
H.A. Wheeler · Proceedings of the IRE · 1947 · 1.2K citations
Fundamental limitations in antennas
R.C. Hansen · Proceedings of the IEEE · 1981 · 615 citations