{"title":"Single Feed Broadband Circularly Polarized Antenna With Parasitic Patch","authors":"Zepei Jiang, Fushun Zhang","doi":"10.1109/ISAPE.2018.8634278","DOIUrl":null,"url":null,"abstract":"A single feed broadband circularly polarized (CP) antenna is proposed. The antenna is composed of single feeding loop structure which provides sequential phase, four driven patches, and one parasitic patches. The driven patches, which are capacitively coupled by the feeding structure, generate one CP mode due to the sequentially rotated structure. One parasitic patch produces additional CP mode. By combining single feeding loop structure with four driven patches and one parasitic patch, the axial ratio (AR) bandwidth is greatly broadened. The results of the simulation show that the antenna achieves a broad impedance bandwidth of 20.7% (4.38–5.39 GHz) and a 3-dB AR bandwidth of 14.2% (4.65–5.36 GHz). In addition, the proposed antenna has a flat gain within the operating frequency band and a size of $\\boldsymbol{\\Phi} 0.97\\boldsymbol{\\lambda}_{0}\\times 0.15\\boldsymbol{\\lambda}_{0}$ at 5.0 GHz.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAPE.2018.8634278","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
A single feed broadband circularly polarized (CP) antenna is proposed. The antenna is composed of single feeding loop structure which provides sequential phase, four driven patches, and one parasitic patches. The driven patches, which are capacitively coupled by the feeding structure, generate one CP mode due to the sequentially rotated structure. One parasitic patch produces additional CP mode. By combining single feeding loop structure with four driven patches and one parasitic patch, the axial ratio (AR) bandwidth is greatly broadened. The results of the simulation show that the antenna achieves a broad impedance bandwidth of 20.7% (4.38–5.39 GHz) and a 3-dB AR bandwidth of 14.2% (4.65–5.36 GHz). In addition, the proposed antenna has a flat gain within the operating frequency band and a size of $\boldsymbol{\Phi} 0.97\boldsymbol{\lambda}_{0}\times 0.15\boldsymbol{\lambda}_{0}$ at 5.0 GHz.
提出了一种单馈宽带圆极化(CP)天线。该天线由提供顺序相位的单馈电回路结构、四个驱动贴片和一个寄生贴片组成。驱动片由进给结构电容耦合,由于结构顺序旋转,产生一个CP模式。一个寄生补丁产生额外的CP模式。通过将单进给回路结构与四个驱动贴片和一个寄生贴片相结合,大大拓宽了轴比(AR)带宽。仿真结果表明,该天线具有20.7的宽阻抗带宽% (4.38–5.39 GHz) and a 3-dB AR bandwidth of 14.2% (4.65–5.36 GHz). In addition, the proposed antenna has a flat gain within the operating frequency band and a size of $\boldsymbol{\Phi} 0.97\boldsymbol{\lambda}_{0}\times 0.15\boldsymbol{\lambda}_{0}$ at 5.0 GHz.