Design of Quasi-Optical Lens Antenna for 3 mm Band Near Range Passive MMW Imaging
-
摘要: 针对近程焦平面被动阵成像系统应用,设计了3 mm波准光介质透镜天线。根据应用需求设计成像系统光路结构,并结合高斯准光理论得出光路设计参数;选择透镜表面为双凸非球面结构,利用光学分析软件ZEMAX优化设计透镜轮廓以减小成像像差;利用电磁仿真软件FEKO计算透镜天线近场分布,对设计进行验证与修正。测试结果表明,所设计的介质透镜在像平面上形成的聚焦波束3 dB尺寸仅为29.5 mm,偏轴时波束指向均匀性好,在700 mm(H)*1 800 mm(V)视场范围内波束功率电平值性改变量小于0.9 dB。
-
[1] YUJIRI L, SHOUCRI M, MOFFA P. Passive millimeter wave imaging[J]. IEEE Microwave Magazine, 2003, 4(3): 39-50. [2] PATI P, MATHER P. Open area concealed weapon detection system[C]//Proceeding of SPIE 8017, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVI. Orlando: [s.n.], 2011. [3] STANKO S, NOTEL D, WAHLEN A, et al. Active and passive mm-wave imaging for concealed weapon detection and surveillance[C]//The 33rd International Conference on Infrared, Millimeter and Terahertz Waves. Pasadena: [s.n.], 2008. [4] SHI Xiang, YANG M H. Development of passive millimeter wave imaging for concealed weapon detection indoors[J]. Microwave and Optical Technology Letters, 2014, 56(7): 1701-1706. [5] VOLKOV P V, BELOV Y I, GORYUNOV A V, et al. Aspherical single-lens objective for radio-vision systems of the millimeter-wavelength range[J]. Technical Physics, 2014, 59(4): 588-593. [6] GOLDSMITH P F, HSIEH C T, HUGUENIN G R, et al. Focal plane imaging systems for millimeter wavelengths[J]. IEEE Transactions on Microwave Theory and Techniques, 1993, 41(10): 1664-1675. [7] SATO S, SAWAYA K, MIZUNO K, et al. Passive millimeter-wave imaging for security and safety applications[C]//Proceedings of SPIE 7671, Terahertz Physics, Devices, and Systems. Bellingham: [s.n.], 2010. [8] THAKUR J P, KIM W G, KIM Y H. Large aperture low aberration aspheric dielectronic lens antenna for w-band quasi optics[J]. Progress in Electromagnetics Research, PIER, 2010, 103: 57-65. [9] KIM W G, MOON N W, SINGH M K, et al. Characteristic analysis of aspheric quasi optical lens antenna in millimeter-wave radiometer imaging system[J]. Applied Optics, 2013, 52(6): 1122-1131. [10] QIU Jing-hui, ZHUANG Zhong, HAN Xue, et al. Design of quasi-optical subsystem for millimeter-wave imaging system[C]//The 8th International Symposium on Antennas Propagation Em Theory. Kunming: IEEE Conference Publications, 2008: 530-533. [11] GOLDSMITH P F. Quasi-optical techniques[J]. Proceedings of the IEEE, 1992, 80(11): 1729-1747. [12] 窦文斌. 毫米波准光理论与技术[M]. 第2版. 北京: 高等教育出版社, 2006. DOU Wen-bin. Millimeter wave quasioptical theory and techniques (second edition)[M]. 2nd ed. Beijing: Higher Education Press, 2006. [13] GOLDSMITH P F. Quasi optical systems : Gaussian beam quasi optical propagation and applications[M]. New York: IEEE Press/chapman Hall Publishers, 1998.
点击查看大图
计量
- 文章访问数: 4836
- HTML全文浏览量: 166
- PDF下载量: 642
- 被引次数: 0