一种应用于平方公里中频阵的锥削槽天线阵的设计
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摘要
设计了一种应用于平方公里中频孔径阵列的双极化超宽带锥削槽天线.该天线采用五边形谐振腔代替传统锥削槽天线的正方形谐振腔,在不占用有源电路面积的情况下,拓展了低频工作带宽;采用辐射板与馈电巴伦分离设计,在不影响天线电性能的前提下,极大地缩小了介质板尺寸以节约加工成本;天线加工成十字形结构以实现阵元间良好的电流连续性和不恶化天线的极化性能.仿真结果显示,该天线能够在0.25～1.57 GHz带宽内进行±45°扫描,且在整个工作频带内具备较好的极化特性,因此所设计天线能够满足平方公里(the Square Kilometer Array, SKA)中频阵超宽带、低成本、大扫描角以及高极化隔离度的要求.
A dual-polarized ultra-wideband tapered slot antenna for a square kilometer Intermediate frequency aperture array is designed. The antenna adopts a pentagon resonator instead of the square cavity of the conventional tapered slot antenna, and expands the low-frequency working bandwidth without occupying the active circuit area. The antenna adopts a pentagon resonator instead of the square cavity of the conventional tapered slot antenna, and expands the low-frequency working bandwidth without occupying the active circuit area. The radiant panel and the feed balun are separated designed, thus, the size of the dielectric plate can be greatly reduced to save processing cost, and the electrical performance of the antenna can be maintained. The antenna is processed into a cross-shaped structure to achieve good current continuity in the array elements and not deteriorate the polarization performance of the antenna. The simulation results show that the antenna can scan in the bandwidth of 0.25-1.57 GHz and has better polarization characteristics in the whole working frequency band. Therefore, the design of antenna can fulfill the requirements of the Square Kilometer Array(SKA) in the ultra-wideband intermediate frequency,low cost, large scan angle and high polarization isolation.
A dual-polarized ultra-wideband tapered slot antenna for a square kilometer Intermediate frequency aperture array is designed. The antenna adopts a pentagon resonator instead of the square cavity of the conventional tapered slot antenna, and expands the low-frequency working bandwidth without occupying the active circuit area. The antenna adopts a pentagon resonator instead of the square cavity of the conventional tapered slot antenna, and expands the low-frequency working bandwidth without occupying the active circuit area. The radiant panel and the feed balun are separated designed, thus, the size of the dielectric plate can be greatly reduced to save processing cost, and the electrical performance of the antenna can be maintained. The antenna is processed into a cross-shaped structure to achieve good current continuity in the array elements and not deteriorate the polarization performance of the antenna. The simulation results show that the antenna can scan in the bandwidth of 0.25-1.57 GHz and has better polarization characteristics in the whole working frequency band. Therefore, the design of antenna can fulfill the requirements of the Square Kilometer Array(SKA) in the ultra-wideband intermediate frequency,low cost, large scan angle and high polarization isolation.
引文
[1] DEWDNEY P E,HALL P J,SCHILIZZI R T,et al.The square kilometer array[J].Proceedings of the IEEE,2009,97(8):1482-1496.
[2] 吴曼青,曹锐,陶小辉,等.世界最大综合孔径望远镜SKA低频数字阵列系统研究[J].中国科学:信息科学,2015,45(12):1600-1614.WU M Q,CAO R,TAO X H,et al.The world’s largest synthesis radio telescope-SKA:low frequency digital-array system[J].Scientia sinica informationis,2015,45(12):1600-1614.(in Chinese)
[3] VAN CAPPELLEN W A,KANT G W,PATEL P D.Antenna developments for EMBRACE,the European demonstrator program for SKA[C]//11th International Symposium on Antenna Technology and Applied Electromagnetics,Saint-Malo,2005:1-3.
[4] KANT G W,PATEL P D,WIJNHOLDS S J,et al.EMBRACE:a multi-beam 20,000-element radio astronomical phased array antenna demonstrator[J].IEEE transactions on antennas and propagation,2011,59(6):1990-2003.
[5] RUITER M,VAN CAPPELLEN W,VAN DER WAL E,et al.Development of a Vivaldi tile for the SKA mid frequency aperture array[C]//10th European Conference on Antennas and Propagation,Davos,2016:1-4.
[6] ARTS M J,FIORELLI B.Polarization studies of Vivaldi aperture arrays for the Square Kilometre Array[C]//2013 International Conference on Electromagnetics in Advanced Applications,2013:356-359.
[7] ZHANG YW,BROWN A K.Octagonal ring antenna for a compact dual-polarized aperture array[C]//IEEE transactions on antennas and propagation,2011,59(10):3927-3932.
[8] GILMORE J,DAVIDSON D B,BIJ DE VAATE J G.Progress on the development of a dual-polarized dense dipole array for the SKA mid-frequency aperture array[C]//10th European Conference on Antennas and Propagation,Davos,2016:1-2.
[9] 彭勃,金乘进,杜彪,等.持续参与世界最大综合孔径望远镜SKA国际合作[J].中国科学:物理学力学天文学,2012,42:1292-1307.PENG B,JIN C J,DU B,et al.China’s participation in the SKA—the world’s largest synthesis radio telescope[J].Scientia sinica physica,mechanica&astronomica,2012,42:1292-1307.(in Chinese)
[10] 伍洋,杜彪,金乘进,等.平方公里阵天线新技术综述[J].电波科学学报,2016,31(2):413-419.WU Y,DU B,JIN C J,et al.Overview of new antenna technologies for the Square Kilometre Array[J].Chinese journal of radio science,2016,31(2):413-419.(in Chinese)
[11] 王乃彪.超宽频带锥削槽天线及阵列的设计与实现[D].西安:西安电子科技大学,2009.WANG N B.Design and implementation of utra-wideband tapered slot antennas and arrays[D].Xi’an:Xidian University,2009.(in Chinese)
[12] 费鹏.超宽频带环槽与锥削槽天线研究[D].西安:电子科技大学,2013.FEI P.A Study of ultra wideband slot loop and tapered slot antennas[D].Xi’an:Xidian University,2013.(in Chinese)
[13] 王军会.超宽带天线及其阵列的若干技术研究[D].西安:电子科技大学,2015.WANG J H.Research on several issues in ultra-wideband antenna and array[D].Xi’an:Xidian University,2015.(in Chinese)
[2] 吴曼青,曹锐,陶小辉,等.世界最大综合孔径望远镜SKA低频数字阵列系统研究[J].中国科学:信息科学,2015,45(12):1600-1614.WU M Q,CAO R,TAO X H,et al.The world’s largest synthesis radio telescope-SKA:low frequency digital-array system[J].Scientia sinica informationis,2015,45(12):1600-1614.(in Chinese)
[3] VAN CAPPELLEN W A,KANT G W,PATEL P D.Antenna developments for EMBRACE,the European demonstrator program for SKA[C]//11th International Symposium on Antenna Technology and Applied Electromagnetics,Saint-Malo,2005:1-3.
[4] KANT G W,PATEL P D,WIJNHOLDS S J,et al.EMBRACE:a multi-beam 20,000-element radio astronomical phased array antenna demonstrator[J].IEEE transactions on antennas and propagation,2011,59(6):1990-2003.
[5] RUITER M,VAN CAPPELLEN W,VAN DER WAL E,et al.Development of a Vivaldi tile for the SKA mid frequency aperture array[C]//10th European Conference on Antennas and Propagation,Davos,2016:1-4.
[6] ARTS M J,FIORELLI B.Polarization studies of Vivaldi aperture arrays for the Square Kilometre Array[C]//2013 International Conference on Electromagnetics in Advanced Applications,2013:356-359.
[7] ZHANG YW,BROWN A K.Octagonal ring antenna for a compact dual-polarized aperture array[C]//IEEE transactions on antennas and propagation,2011,59(10):3927-3932.
[8] GILMORE J,DAVIDSON D B,BIJ DE VAATE J G.Progress on the development of a dual-polarized dense dipole array for the SKA mid-frequency aperture array[C]//10th European Conference on Antennas and Propagation,Davos,2016:1-2.
[9] 彭勃,金乘进,杜彪,等.持续参与世界最大综合孔径望远镜SKA国际合作[J].中国科学:物理学力学天文学,2012,42:1292-1307.PENG B,JIN C J,DU B,et al.China’s participation in the SKA—the world’s largest synthesis radio telescope[J].Scientia sinica physica,mechanica&astronomica,2012,42:1292-1307.(in Chinese)
[10] 伍洋,杜彪,金乘进,等.平方公里阵天线新技术综述[J].电波科学学报,2016,31(2):413-419.WU Y,DU B,JIN C J,et al.Overview of new antenna technologies for the Square Kilometre Array[J].Chinese journal of radio science,2016,31(2):413-419.(in Chinese)
[11] 王乃彪.超宽频带锥削槽天线及阵列的设计与实现[D].西安:西安电子科技大学,2009.WANG N B.Design and implementation of utra-wideband tapered slot antennas and arrays[D].Xi’an:Xidian University,2009.(in Chinese)
[12] 费鹏.超宽频带环槽与锥削槽天线研究[D].西安:电子科技大学,2013.FEI P.A Study of ultra wideband slot loop and tapered slot antennas[D].Xi’an:Xidian University,2013.(in Chinese)
[13] 王军会.超宽带天线及其阵列的若干技术研究[D].西安:电子科技大学,2015.WANG J H.Research on several issues in ultra-wideband antenna and array[D].Xi’an:Xidian University,2015.(in Chinese)