Vol. 72

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2017-03-02

Wideband Circularly Polaried Cross Bowtie Dipole Antenna with Axial-Ratio Bandwidth Enhancement

By Dan Wu, Zhi-Ya Zhang, Luyang Ji, Long Yang, Guang Fu, and Xiao-Wei Shi
Progress In Electromagnetics Research C, Vol. 72, 65-72, 2017
doi:10.2528/PIERC17011503

Abstract

A wideband circularly polarized (CP) cross-dipole antenna is proposed for wireless applications. In this design, four parasitic square patches are utilized around the radiation patch to enhance the Axial-ratio (AR) bandwidth. By employing the bowtie-shape dipoles, the proposed antenna can achieve a wide impedance bandwidth. Meanwhile, by integrating with a curved-delay line which provides a 90° phase difference, the proposed antenna can radiate a CP pattern. A prototype is calculated, fabricated, and measured. Good agreement between the simulated and measured results is achieved. The measured results show an impedance bandwidth for VSWR≤2 of 47.73% (1.93-3.14 GHz) and a 3-dB AR bandwidth of 42.8% (2.00-3.09 GHz).

Citation


Dan Wu, Zhi-Ya Zhang, Luyang Ji, Long Yang, Guang Fu, and Xiao-Wei Shi, "Wideband Circularly Polaried Cross Bowtie Dipole Antenna with Axial-Ratio Bandwidth Enhancement," Progress In Electromagnetics Research C, Vol. 72, 65-72, 2017.
doi:10.2528/PIERC17011503
http://jpier.org/PIERC/pier.php?paper=17011503

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