光学学报, 2019, 39 (12): 1206001, 网络出版: 2019-12-06
用于通信的自由空间光/毫米波复合天线设计 下载: 1246次
Design of Compound Free Space Optical/Millimeter Wave Antenna for Communication
光通信 自由空间光通信 毫米波 复合天线 混合传输线理论-射线追踪算法 optical communications free space optical communication millimeter wave compound antenna hybrid transmission line theory-ray tracing method
摘要
提出一种用于点对点通信的自由空间光/毫米波(FSO/MMW)复合天线设计方法;提出传输线理论-射线追踪混合算法(TLT-RTM),用于快速高效模拟包含有损介质的电大尺寸复合天线的传输特性,并利用该算法对复合天线进行优化设计。复合天线的光学波段工作波长为1550 nm,毫米波频率为28 GHz。复合天线口径为200 mm,有效焦距为816.86 mm。对于光波,对比度调制传递函数下降到0.7时对应的空间频率为30 lp/mm;对于毫米波,复合天线增益为32.97 dBi,半功率宽度为3.29°。该复合天线可用于5G通信中点对点地面链接的光学信号和毫米波信号共口径复合传输。
Abstract
A design method of compound free space optical/millimeter wave (FSO/MMW) antenna for point-to-point communication is proposed. A hybrid transmission line theory-ray tracing method (TLT-RTM) is proposed for rapid and efficient simulation of the FSO/MMW antenna, which contains an absorption dielectric material with electrically large size. Meanwhile, a compound antenna is optimized using TLT-RTM. The working wavelength of the compound antenna in optical spectrum is 1550 nm and the microwave frequency is 28 GHz. The aperture of the compound antenna is 200 mm and the effective focal length is 816.86 mm. The spatial frequency is 30 lp/mm when the contrast transfer function is reduced to 0.7 for optical wave. The gain of the compound antenna is 32.97 dBi and the half power bandwidth is 3.29° for millimeter wave. The compound antenna can be applied to transmitting optical and millimeter wave signals at the common aperture in point-to-point terrestrial links of 5G communication networks.
王一婷, 杨苏辉, 李卓, 郝凯子, 王欣. 用于通信的自由空间光/毫米波复合天线设计[J]. 光学学报, 2019, 39(12): 1206001. Yiting Wang, Suhui Yang, Zhuo Li, Kaizi Hao, Xin Wang. Design of Compound Free Space Optical/Millimeter Wave Antenna for Communication[J]. Acta Optica Sinica, 2019, 39(12): 1206001.