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2018-01-11

Electrically-Small Circularly-Polarized Quasi-Yagi Antenna

By Son Xuat Ta
Progress In Electromagnetics Research Letters, Vol. 72, 75-81, 2018
doi:10.2528/PIERL17102403

Abstract

In this letter, an electrically-small circularly polarized (CP) quasi-Yagi antenna is presented. It is composed of three elements; i.e., a compact single-feed crossed-dipole antenna acted as the driver and two parasitic elements acted as the reflector and director, respectively. Each arm of all elements contains a meander line with an arrowhead ending to realize compactness. The driver has double vacant-quarter printed rings incorporated into it to generate the CP radiation. The parasitic elements are incorporated with the crossed-dipole driver to not only produce a directive radiation, but also broaden the antenna bandwidth. The final design with overall size of 35 mm×35 mm×27 mm (0.184λo×0.184λo×0.142λo at 1.575 GHz, ka = 0.93) a measured 10-dB bandwidth of 19.23% (1.476-1.790 GHz), 3-dB axial ratio bandwidth of 7.67% (1.505-1.625 GHz), a broadside gain of 3.0 ± 0.2 dBic, and the maximum front-to-back ratio of 8.2 dB. The proposed antenna is applicable to a variety of wireless system operating near 1.575 GHz, such as Global Positioning Systems, Global Navigation Satellite Systems, as well as international maritime satellite organization (Inmarsat) networks.

Citation


Son Xuat Ta, "Electrically-Small Circularly-Polarized Quasi-Yagi Antenna," Progress In Electromagnetics Research Letters, Vol. 72, 75-81, 2018.
doi:10.2528/PIERL17102403
http://www.jpier.org/PIERL/pier.php?paper=17102403

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