95GHz准光模式转换器实验研究

摘要

This paper presents the experimental results of a 95 GHz quasi-optical mode converter. The test system is a near-field scanning system based on millimeter wave antenna. The mode converter includes a Vlasov launcher, a quasi-elliptical mirror and two phase correcting mirrors. It converts the TE62 mode in a circular waveguide of 5. 62 mm radius into a Gaussian mode of 22. 4 mm waist. The scalar correlation coefficient is 97. 43%, and the vector correlation coefficient is 88. 65%.%介绍了采用95 GHz准光模式转换器将T E62模式转换为高斯波束的实验测试结果.准光模式转换器由螺旋切口的Vlasov辐射器、一个准抛物柱面反射镜和两个相位修正镜组成.将半径5.62 mm圆波导内的TE62模式转换为束腰直径22.4 mm的高斯波束.实验采用毫米波天线近场扫描测试系统测试,实验结果表明标量转换效率大于97％,矢量转换效率大于88％.