多子阵平板天线波束指向频率响应分析与固定长度延迟线应用

林志强; 秦丽平; 姚敏立; 沈晓卫

doi:10.3724/SP.J.1146.2010.00794

多子阵平板天线波束指向频率响应分析与固定长度延迟线应用

doi: 10.3724/SP.J.1146.2010.00794

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出版历程
- 收稿日期: 2010-07-28
- 修回日期: 2010-11-24
- 刊出日期: 2011-04-19

Beam Pointing Excursion Versus Frequency and Application of Fixed Delay Line for the Planar Antenna with Multiple Subarrays

摘要

摘要: 天线高度是宽带卫星移动通信系统推广应用的一个重要制约因素，采用多子阵技术可以降低平板天线的天线高度。然而多子阵平板天线阵的离散口径会造成天线波束指向频率响应的恶化。为改善天线波束指向频率响应，该文采用固定长度延迟线与移相器相结合的两级馈相方法，提出了一种基于多套延迟线的切换波束技术，将天线波束的扫描范围划分为多个区域，各区域采用不同的延迟线以合成相应的波束。仿真结果表明，该方法可以有效减小天线波束指向漂移，满足卫星移动通信系统对天线波束指向精度的要求。
- 多子阵平板天线 /
- 卫星移动通信 /
- 延迟线 /
- 波束指向频率响应 /
- 移相器
Abstract: As the application of SATCOM On-The-Move (SOTM) is restricted by the height of antenna, the planar antenna with multiple subarrays is adopted to reduce the height of antenna. However, the excursion of beam pointing versus frequency is deteriorated because of its dispersed aperture. In order to reduce the excursion of beam pointing, the feeder system using fixed delay line and phase shifter is applied in this paper, and the switching-beam technique based on multi-set fixed delay lines is proposed. The proposed method divides the antenna scanning range into several small ones, and uses different fixed delay lines in each range. Simulation results show that the method can reduce the excursion of beam pointing effectively, and the requirement of beam pointing accuracy for SOTM can be satisfied.
- The planar antenna with multiple subarrays /
- Mobile satellite communication /
- Delay line /
- Beam pointing excursion versus frequency /
- Phase shifter

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Shelley M, Pearson R, and Vazquez J. Low profile, dual-polarised antenna for aeronautical and land mobile satcom [C]. ASMS 2008. 4th Advanced Satellite Mobile Systems Conference, Bologna, Italy, Aug. 2008: 16-19.[2]Ito Y and Yamazaki S. A mobile 12 GHz DBS television receiving system [J].IEEE Transactions on Broadcasting.1989, 35(1):56-62[3]Vaccaro S, Tiezzi F, and Llorens D, et al.. Ku-band low profile antennas for mobile satcom [C]. ASMS 2008. 4th Advanced Satellite Mobile Systems Conference, Bologna, Italy, Aug. 2008: 24-28.[4]RaySat.[J].Inc. SpeedRayTM 1000 Installation User Guide [Z]. Virginia, US.2006,:-[5]Mousavi P, Fakharzadeh M, and Jamali S H, et al.. A low-cost ultra low profile phased array system for mobile satellite reception using zero-knowledge beamforming algorithm [J].IEEE Transactions on Antennas and Propagation.2008, 56(12):3667-3679[6]王琼. 低轮廓平板天线动中通的天馈系统设计及其优化研究 [D]. [博士论文], 第二炮兵工程学院, 2009.[9]Kong De-wu and Zhang Chuan-fang. X-band optically controlled phased array antenna demonstration [C]. 2009 IET International Radar Conference, Guilin, China, April. 2009: 1-3.[12]Wei Wen, Li Ning, and Tang Jun, et al.. Broadband digital beamforming based on fractional delay in SAR systems [C]. APSAR 2009. 2nd Asian-Pacific Conference on Synthetic Aperture Radar, Xian, China, Oct. 2009: 575-578.[13]Chen Chang-ming, Yi Yun-ji, and Wang Fei, et al.. Ultra-long compact optical polymeric array waveguide true-time-delay line devices [J].IEEE Journal of Quantum Electronics.2010, 46(5):754-761

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