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2012-05-04
Broadband Monopole Antenna with Wideband Circular Polarization
By
Progress In Electromagnetics Research Letters, Vol. 32, 19-28, 2012
Abstract
A novel broadband monopole antenna design with wideband circular polarization (CP) characteristic is presented. This antenna consists of a feed line and a step-shaped ground plane which is formed by cutting a notch in the upper left corner of an asymmetric ground plane. The asymmetric ground plane is capable of exciting two orthogonal electric field vectors with equal amplitude and 90° phase difference (PD) for CP. By cutting a notch, the impedance-bandwidth can be enhanced greatly and the 3-dB axial ratio (AR) bandwidth is improved meanwhile. The measured impedance-bandwidth is about 5.96 GHz (84.7%) from 4.06 to 10.02 GHz, and the measured AR-bandwidth is about 2.64 GHz (36.5%) from 5.91 to 8.55 GHz. The results show that the antenna can achieve wide impedance-bandwidth and wide AR-bandwidth simultaneously.
Citation
Bo Chen, Yong-Chang Jiao, Feng-Chao Ren, and Li Zhang, "Broadband Monopole Antenna with Wideband Circular Polarization," Progress In Electromagnetics Research Letters, Vol. 32, 19-28, 2012.
doi:10.2528/PIERL12032807
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