IEEE Antennas and Wireless Propagation Letters · 2019 · 32 citations · 13 references
EngineeringAerospace EngineeringElectrical EngineeringAntennasGeodesyGlobal Navigation Satellite SystemsAntenna DesignAntenna MeasurementAntenna PolarizationBroadband AntennasSlot AntennasAntenna Impedance BandwidthAxial RatioCircular PolarizationCircularly Polarized AntennasGlobal Navigation Satellite System AntennasImpedance BandwidthOrthogonal Polarization ModesPhase Center
A wideband circularly polarized crossed-slot antenna with a stable phase center is investigated in this letter. The proposed antenna consists of a crossed-slot radiator and a Γ-shaped feeding structure. Orthogonal modes can be excited by perturbing the crossed slot to realize circular polarization. Both simulation and measurement of the designed antenna demonstrate a -10 dB impedance bandwidth of 43.8% and a 3 dB axial-ratio bandwidth of 42.6%, covering all the global navigation satellite system (GNSS) bands. Due to the overall symmetry of the radiation crossed slot, a phase center of the proposed antenna remains stable within a wide beam of 100° covering the whole GNSS bands, with phase center variation retained below 5°.
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Antennas for Global Navigation Satellite System (GNSS)
J. J. H. Wang · Proceedings of the IEEE · 2012 · 177 citations
Mubarak Sani Ellis, Zhiqin Zhao, Jiangniu Wu et al. · IEEE Transactions on Antennas and Propagation · 2016 · 164 citations