K band broadband microwave orthogonal mode tansducer design and radiation characteristics study

• Main Authors: Chen, Yu-Shin, 陳昱時
• Other Authors: Su, Wen-Kuan
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/33967933974171199111

碩士 === 國防大學中正理工學院 === 電子工程研究所 === 95 === This paper mainly discussed the design of a planar orthogonal mode transducer which operates at K band. The optimum design parameters of those the cross plane radius, the backshort, the broadwall holds the quasi-TEM wave, the probe size, and the coupler of orthogonal mode transducer was simulated with the soft of Ansoft HFSS. We will actualize it when finding adaptable sizes before using a seriese of analysis. It will be compared with simulate and measured ways after collocating a single antenna system, and we can use this result to be made a study of 24GHZ FMCW radar sensor and a reference of improvement. We apply this planar orthomode transducer in frequency moduled continuous wave radar sensor, it includes waveguide, polarizer, space coupler and conical horn which forms a single antenna system in FMCW radar sensor structure. And we will study the performance after OMT probe in the antenna system. Use its symmetry characteristic to archive the high isolation requirement