A New Bidirectional Wideband Circularly Polarized Cylindrical Dielectric Resonator Antenna using Modified J-shaped Ground Plane for WiMAX/LTE Applications
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Date
2019-06
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Mark
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Společnost pro radioelektronické inženýrství
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Abstract
A new singly-fed bidirectional wideband circularly polarized cylindrical dielectric resonator antenna (CDRA) using modified J-shaped ground plane is investigated and presented in this paper. The designed antenna excited by a single microstrip feed line with the modified J-shaped ground plane, which supports the orthogonal mode generation i.e. HEM_11δ mode for realizing circular polarization (CP). Measured results show that proposed antenna achieved S11≤-10 dB, input impedance bandwidth of 41.44% (centered at 3.74 GHz) and 3-dB axial ratio bandwidth in broadside direction of 29.91% (centered at 3.61 GHz). The average measured gain and simulated radiation efficiency in broadside are 2.84 dBic and 94.69% respectively, throughout the working band. The proposed CPDRA is a bidirectional radiator, and the radiation patterns on both sides are nearly the same. The antenna radiates left-handed CP wave in +z-direction and right-handed CP wave in -z-direction for both the resonance frequencies, which has been confirmed by plotting CP radiation pattern. The presented design can be used for Wi-MAX (3.3-3.7 GHz) and LTE3400 (3400–3800 MHz) bands.
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Radioengineering. 2019 vol. 28, č. 2, s. 391-398. ISSN 1210-2512
https://www.radioeng.cz/fulltexts/2019/19_02_0391_0398.pdf
https://www.radioeng.cz/fulltexts/2019/19_02_0391_0398.pdf
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Peer-reviewed
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en