CAJ | 학술논문

设计制作了一种新颖的宽带EBG(Electromagnetic Bandgap)结构小型圆极化GPS微带贴片天线单元.采用Koch矩形分形设计圆极化GPS微带贴片天线和特定尺寸的EBG结构,一方面有效减小了天线单元的尺寸,另一方面有效抑制其工作时产生的表面波,改善了其工作性能.仿真和实测结果表明,相对于普通矩形结构的微带贴片天线单元,该分形天线单元尺寸减小了约27%.同时,采用EBG结构使工作频率上的3 dB轴比带宽增加了约30%,增益增加约0.2 dB.
설계제작료일충신영적관대EBG(Electromagnetic Bandgap)결구소형원겁화GPS미대첩편천선단원.채용Koch구형분형설계원겁화GPS미대첩편천선화특정척촌적EBG결구,일방면유효감소료천선단원적척촌,령일방면유효억제기공작시산생적표면파,개선료기공작성능.방진화실측결과표명,상대우보통구형결구적미대첩편천선단원,해분형천선단원척촌감소료약27%.동시,채용EBG결구사공작빈솔상적3 dB축비대관증가료약30%,증익증가약0.2 dB.
A novel miniaturized circularly polarized microstrip antenna with the EBG structure for GPS applications is designed and constructed.The size of the circularly polarized GPS microstrip antenna desiged by the Koch rectangle fractal is reduced considerably.And the properties of bandwidth and gain are improved effectively due to the introduction of given size EGB designed by the Koch rectangle fractal.Simulation and experimental results show that,compared with the conventional rectangle structure.the proposed antenna has reduced the size by 27%,and increased the axial-ratio bandwidth by about 30%as well as the gain by 0.2 dB due to the application of the EBG structure.