亚毫米波频率选择表面圆极化器分析.pdfVIP

万方数据 ABSTRACT ABSTRACT Millimeter wave and sub-millimeter wave has important applications prospect in the field of modern wireless communications and radar acquisition, and it makes ever-increasing demands on transmission control of the electromagnetic wave in this band.Line - circular polarization converter as an important transmission control function devices, has an important role in the development of application systems. Therefore, this paper designs a circular polarization which works center frequency is in 351GHz . The main work in this thesis is as follows: Firstly, the FSS circular polarization which based split slot ring has been studied,Through simulation, the impacts on polarization efficiency that the relevant parameters of the circular polarization has has been studied.The results show that:the difference of the slit length between the inner and outer ring is the key parameters to determine the phase difference between the two out going TE and TM polarized components; The slit width of the ring primarily affects on the bandwidth of the circular polarization,and the bandwidth will be wider if the slit is wider; the cellspacing is the key parameters to determine the bandwidth of the circular polarization,the coupling between units will stronger if cellspacing is smaller,and the bandwidth will be wider. The circular polarization this paper researched which working in center frequency 351GHz can