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2023-11-27
Series-Fed Loop Antenna Arrays with an Expanded Bandwidth of Circular Polarization
By
Progress In Electromagnetics Research Letters, Vol. 114, 75-81, 2023
Abstract
Three array antennas are analyzed to expand a 3 dB axial ratio bandwidth using the method of moments. First, we design reference and present antennas comprising loop elements with a perturbation segment and quasi-two sources for circular polarization. It is found that the reference and present antennas have an axial ratio bandwidth of 9% and a 3 dB gain drop bandwidth of 31% (35% for the axial ratio bandwidth), respectively. Subsequently, the present antenna is modified using a sequential rotation technique. It is revealed that the modified antenna shows a gain drop bandwidth of 45% (60% for the axial ratio bandwidth). The simulated results are verified with experimental ones.
Citation
Kazuhide Hirose, Susumu Tsubouchi, and Hisamatsu Nakano, "Series-Fed Loop Antenna Arrays with an Expanded Bandwidth of Circular Polarization," Progress In Electromagnetics Research Letters, Vol. 114, 75-81, 2023.
doi:10.2528/PIERL23082002
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