空间电子技术2024，Vol.21Issue(3)：67-71,5.DOI:10.3969/j.issn.1674-7135.2024.03.010
全金属Fabry-Perot谐振腔天线
Metal Fabry-Perot cavity antenna
摘要
Abstract
In order to realize long-distance microwave wireless power transmission,the transmitting antenna should satisfy the needs of high power,high gain,low loss,and simple structure.To meet the above requirements,this paper designs an all metal Fabry-Perot cavity antenna.The whole antenna consists of a metal cavity,a waveguide feed port and a double-layer metal grid covering layer.The size of the covering layer is 3 λ0×3 λ0,λ0 is the corresponding working wavelength.Each layer of the metal grid contains 9×9 units.The designed double-layer covering layer can be regarded as an electromagnetic band gap structure Electromagnetic Band Gap.By optimizing the thickness and spacing of the double-layer metal grid cells,the simulations show that the double-layer covering layer achieves a broadband transmission characteristic of insert loss is less than 3 dB from 9.72 GHz to 10.3 GHz.The gain of the antenna is improved because the amplitude and phase of the microwave radiated from the feed source is modified by the EBG structure.According to the simulationresults,the gain of the antenna is 9.7 dBi when the double layer is not loaded,and the gain can be increased to 17.76 dBi when the double layer is added.In order to verify the above design and simulation,a Fabry-Perot cavity antenna with all metal structure is fabricated.The measured results show that the antenna achieves a high gain of 17.31 dBi at 10 GHz and an impedance bandwidth of echo loss is above 10 dB from 9.51 GHz to 11.42 GHz.关键词
微波无线能量传输/发射天线/大功率/Fabry-Perot谐振腔Key words
microwave wireless power transmission/transmitting antenna/high power分类
航空航天引用本文复制引用
易先进,陈星..全金属Fabry-Perot谐振腔天线[J].空间电子技术,2024,21(3):67-71,5.基金项目
国家自然科学基金(编号:U19A2054) （编号:U19A2054）
