Overcoming Inherent Narrow Bandwidth and Low Radiation Properties of Electrically Small Antennas by Using an Active Interior-Matching Circuit
نویسندگان
چکیده
A technique is described to extend the working frequency-band and increase radiation gain efficiency of an electrically small antenna (ESA). The geometry proposed ESA in shape “H”structure. gap included at symmetry H-shape structure embed inductive load that used connect two halves H-shaped antenna. With lumped element inductor, bandwidth restricted by Chu-lower bound. However, it demonstrated analytical analysis through 3D full-wave electromagnetic simulations when replaced with negative reactance from a impedance converter (NIC) antenna's bandwidth, performance can be significantly improved ~40%, 3.6 dBi 55%, respectively. This because NIC acts as effective interior matching circuit. resonant frequency was determine required inductance variation realize characteristics
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ژورنال
عنوان ژورنال: IEEE Access
سال: 2021
ISSN: ['2169-3536']
DOI: https://doi.org/10.1109/access.2021.3054939