Affiliations: [a] National Laboratory of Science and Technology on Antennas and Microwaves, Xidian University, Xi'an, Shaanxi, China | [b] Collaborative Innovation Center of Information Sensing and Understanding at Xidian University, Xi'an, Shaanxi, China
Correspondence:
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Corresponding author: Li Zhang, National Laboratory of Science and Technology on Antennas and Microwaves, Collaborative Innovation Center of Information Sensing and Understanding at Xidian University, Xidian University, Xi'an, Shaanxi 710071, China. E-mail:lizhang@mail.xidian.edu.cn
Abstract: A wideband circular polarization (CP) printed monopole
antenna with coplanar-waveguide (CPW)-fed is presented for wireless
communication applications. By employing T-shaped slot in the ground-plane,
the impedance bandwidth of the antenna is enlarged, and its wide axial-ratio
(AR) bandwidth is realized. The measured results show a -10 dB impedance
bandwidth of 75.39% (3.62-8.00 GHz) and an axial ratio (AR) bandwidth of
31.38% (4.81-6.60 GHz), which agree well with the simulated results. The
proposed antenna can provide a peak antenna gain of about 1.68 dBi at 5.00
GHz, with gain variations less than 0.81 dB for frequencies within the CP
bandwidth.
