回旋器件Vlasov准光模式变换器的研究与设计
发布时间：2018-11-10 14:09
【摘要】：本论文从理论到实际操作详细分析了Vlasov准光模式变换器的整个系统设计及数值计算,并对Denisov辐射器进行了简单的说明。文章先从总体上介绍了准光模式变换器国内外的发展状况,然后从理论出发,介绍各个准光模式变换器的设计机理及选择辐射器的条件及方法,再一步一步说明准光模式变换器中反射镜面的设计原理及其面上场的计算方法。最后用Matlab编程进行数值模拟。文中主要应用几何光学和矢量绕射理论及一些数学分析的方法对整个准光模式变换器系统进行了详细的分析研究。先用几何光学对辐射器原理进行了分析:不同模式下的馈源波导如何切口、如何计算切口的长度、如何选择辐射器的种类等。再用几何光学初步设计准光模式变换器的反射镜面的方程、几何参数及分析了其局部坐标与全局坐标的关系。然后再利用矢量绕射伦理进行辐射场计算,反复优化参数。并且文中推导了矢量绕射理论,说明了其物理意义,还通过数学分析将矢量绕射理论的矢量方程标量化。最后,通过理论的分析,本文设计了一个工作频率为94GHZ,馈源波导半径为9mm,模式为TE01的Vlasov准光模式变换器。此准光模式变换器选择了梯形切口,长度为82mm;两级抛物柱面反射镜面。通过编程计算优化,最后在输出窗口得到很好的高斯束(TEM00模),且转换效率为76.42%。并且在设计中详细说明了切口面、反射镜面等各个面的等效流源的算法。在计算方法和编程上的特色:相对于传统的口径面积分法,我们采用等效流源的方法把辐射器分为两个面(辐射器的切口面和波导馈源口面),并且计算这两个面上的等效流源,这种方法使计算更精确。
[Abstract]:In this paper, the whole system design and numerical calculation of Vlasov quasi-optical mode converter are analyzed in detail from theory to practice, and the Denisov radiator is simply explained. This paper first introduces the development of quasi-optical mode converters at home and abroad, and then introduces the design mechanism of each quasi-optical mode converter and the conditions and methods of selecting radiators from the theory. The design principle of reflection mirror in quasi-optical mode converter and the calculation method of its surface are further explained. Finally, the numerical simulation is carried out with Matlab programming. In this paper, geometric optics, vector diffraction theory and some mathematical analysis methods are used to analyze the whole quasi-optical mode converter system in detail. Firstly, the principle of the radiator is analyzed by geometrical optics: how to cut the feed waveguide in different modes, how to calculate the length of the notch, how to choose the type of radiator, etc. Then the equation of reflection mirror, geometric parameters and the relationship between local coordinate and global coordinate of quasi-optical mode converter are preliminarily designed by geometric optics. Then the radiation field is calculated by vector diffraction ethics, and the parameters are optimized repeatedly. The vector diffraction theory is deduced and its physical meaning is explained. The vector equation of vector diffraction theory is quantized by mathematical analysis. Finally, through theoretical analysis, a Vlasov quasi-optical mode converter with operating frequency of 94 GHz, feed waveguide radius of 9 mm and mode of TE01 is designed. The quasi-optical mode converter has a trapezoidal notch with a length of 82 mm and a two stage parabolic cylindrical reflection mirror. Finally, the Gao Si beam (TEM00 mode) is obtained in the output window, and the conversion efficiency is 76.42. In the design, the algorithm of the equivalent flow source of each plane, such as notch surface and reflective mirror surface, is described in detail. The characteristics of calculation and programming are as follows: compared with the traditional method of aperture area division, we use the method of equivalent current source to divide the radiator into two faces (the notch surface of the radiator and the feed surface of the waveguide). And the equivalent flow source on these two planes is calculated, which makes the calculation more accurate.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM46
本文编号：2322678
[Abstract]:In this paper, the whole system design and numerical calculation of Vlasov quasi-optical mode converter are analyzed in detail from theory to practice, and the Denisov radiator is simply explained. This paper first introduces the development of quasi-optical mode converters at home and abroad, and then introduces the design mechanism of each quasi-optical mode converter and the conditions and methods of selecting radiators from the theory. The design principle of reflection mirror in quasi-optical mode converter and the calculation method of its surface are further explained. Finally, the numerical simulation is carried out with Matlab programming. In this paper, geometric optics, vector diffraction theory and some mathematical analysis methods are used to analyze the whole quasi-optical mode converter system in detail. Firstly, the principle of the radiator is analyzed by geometrical optics: how to cut the feed waveguide in different modes, how to calculate the length of the notch, how to choose the type of radiator, etc. Then the equation of reflection mirror, geometric parameters and the relationship between local coordinate and global coordinate of quasi-optical mode converter are preliminarily designed by geometric optics. Then the radiation field is calculated by vector diffraction ethics, and the parameters are optimized repeatedly. The vector diffraction theory is deduced and its physical meaning is explained. The vector equation of vector diffraction theory is quantized by mathematical analysis. Finally, through theoretical analysis, a Vlasov quasi-optical mode converter with operating frequency of 94 GHz, feed waveguide radius of 9 mm and mode of TE01 is designed. The quasi-optical mode converter has a trapezoidal notch with a length of 82 mm and a two stage parabolic cylindrical reflection mirror. Finally, the Gao Si beam (TEM00 mode) is obtained in the output window, and the conversion efficiency is 76.42. In the design, the algorithm of the equivalent flow source of each plane, such as notch surface and reflective mirror surface, is described in detail. The characteristics of calculation and programming are as follows: compared with the traditional method of aperture area division, we use the method of equivalent current source to divide the radiator into two faces (the notch surface of the radiator and the feed surface of the waveguide). And the equivalent flow source on these two planes is calculated, which makes the calculation more accurate.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM46
【参考文献】
相关期刊论文 前1条
1 黄裕年;高功率微波武器技术的发展评述[J];微波学报;1999年04期
，本文编号：2322678
本文链接：https://www.wllwen.com/kejilunwen/dianlilw/2322678.html
教材专著
