Design of a High-gain Wideband Dual-polarized Antenna Based on Split Ring Resonators
REN Yuhui①② DING Jun① GUO Chenjiang①
①(School of Electronics and Information, University of Northwestern Polytechnical, Xi’an 710129, China) ②(School of Information Science and Technology, Northwest University, Xi’an 710069, China)
Abstract：A wideband and high gain dual-polarized antenna based on split ring resonators is presented. The antenna is composed of two cross printed dipole antennas vertically fixed on an aluminum plate as ground plane, which are excited by two similar micro-strip baluns. In order to further improve the gain with a broad bandwidth, split ring resonators and complementary split ring resonators are loaded on the printed dipole antennas. Measured results show that the proposed antenna achieves -10 dB return loss with bandwidth of 0.98~2.01 GHz (69%), and its port isolation is higher than 20 dB within that band. The maximum gain of antenna is improved up by 4.1 dB because of split ring resonators. Furthermore, the height of the antenna is reduced about 12% than the LPPDs- DPA.
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