基于三频应用的混合谐振器天线设计

Design of hybrid resonator antenna for triple-band applications

提出了一种新的适用于三频应用的混合谐振器天线.该天线辐射结构采用H型金属辐射片并加载矩形介质谐振器,形成混合型谐振器.同时提出一种新的混合馈电方式,使得介质谐振器产生双高阶模,最终形成可工作于三频段的混合型天线.经过优化设计,天线工作频率为1.45~1.63GHz,3.62~4.1GHz和4.55~5.86GHz,其相对带宽分别为11.6%,12.4%和25.2%,天线实测结果表明了该设计的有效性.

A new hybrid dielectric resonant antenna for triple-band applications was proposed. A H-shaped monopole resonator and a dielectric loaded resonator were adopted as the radiation structures in this design. A hybrid feeding structure was also proposed to feed both the monopole and dielectric resonators simultaneously. In the dielectric resonator, two higher order resonant modes could be generated by the hybrid feeding at high frequency. Due to the H-shaped monopole, the new design had triple resonant frequency. The experiment results show that the three working frequency bands are 1. 45 - 1. 63 GHz, 3. 62 - 4. 1 GHz and 4. 55 - 5. 86 GHz respectively. The relative frequency band widths are 11. 6%, 12. 4% and 25. 2% for the three bands respectively. The measurements verified its well-performed applications in the three bands.