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目的:通过调整谐振器结构改善介质谐振器天线的圆极化性能，设计一种结构简单的单馈宽带圆极化介质谐振器天线。方法:利用不等长十字缝隙激励介质谐振器的正交工作模式，通过调整谐振器结构，观察谐振器变化前后天线的回波损耗和轴比变化情况，最终加工出介质谐振器天线实物并进行测试。结果:当加载相位差为90°的长条形谐振器和圆环谐振器后，天线仿真结果的-10 dB阻抗带宽和3 dB轴比带宽分别为1.97～3.15 GHz和2.12～3.06 GHz;实测结果表明-10 dB阻抗带宽为2.1～3.14 GHz, 3 dB轴比带宽为2.08～3.00 GHz。结论:仿真与实测结果基本一致，表明通过调整谐振器结构设计单馈宽带圆极化介质谐振器天线具有可行性。
Abstract：Aims: This paper aims to improve the circular polarization performance of dielectric resonator antennas by adjusting the resonator structure and to propose a single fed broadband circular polarization dielectric resonator antennae. Methods: Unequal cross gaps were used to excite the orthogonal working mode of the dielectric resonator; and then the resonator structure was adjusted to observe the changes in the return loss and axial ratio of the dielectric resonator antenna before and after the resonator change. Finally, the actual dielectric resonator antenna was processed and tested. Results: After loading a rectangular resonator and a circular resonator with a phase difference of 90°, the simulation results of the-10 dB impedance bandwidth and the 3 dB axial ratio bandwidth of the dielectric resonator antenna were 1.97～3.15 GHz and 2.12～3.06 GHz, respectively. The measured-10 dB impedance bandwidth was 2.1～3.14 GHz; and the measured 3 dB axial ratio bandwidth was 2.08～3.00 GHz. Conclusions: The simulation and experimental results are basically consistent, indicating the feasibility of designing a single fed broadband circularly polarized dielectric resonator antenna by adjusting the resonator structure.
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基本信息:
DOI：
中图分类号:TN820
引用信息:
[1]袁诚浩,郁国良,邱阳等.单馈宽频段圆极化介质谐振器天线的设计[J].中国计量大学学报,2025,36(01):35-43.
基金信息:
国家重点研发计划NQI专项(No.2023YFF0616800)