CAJ | 학술논문

该文从频域和时域两方面对一种正六边形贴片的电磁带隙(EBG)结构进行了特性分析和研究.利用等效电路理论分析和研究了贴片边长、贴片间距和过孔半径对该结构的带隙和传输特性的各自不同的影响,得到并验证了准确估算不同贴片边长带隙的上、下限频率和带宽的数学表达式.研究表明可以通过贴片间距来改变带宽,但不影响带隙左侧特性,过孔半径的缩小会导致带隙左移并变窄.最终分析了以 EBG 结构为返回路径的信号线的时域特性,实验证明 EBG 结构的周期越小,信号的传输质量越差.
해문종빈역화시역량방면대일충정륙변형첩편적전자대극(EBG)결구진행료특성분석화연구.이용등효전로이론분석화연구료첩편변장、첩편간거화과공반경대해결구적대극화전수특성적각자불동적영향,득도병험증료준학고산불동첩편변장대극적상、하한빈솔화대관적수학표체식.연구표명가이통과첩편간거래개변대관,단불영향대극좌측특성,과공반경적축소회도치대극좌이병변착.최종분석료이 EBG 결구위반회로경적신호선적시역특성,실험증명 EBG 결구적주기월소,신호적전수질량월차.
The characteristics of the Electromagnetic Band-Gap (EBG) structure composed of regular hexagonal patches is analyzed in the frequency domain and time domain. Respective influences of the side length of patches, space between patches and the radius of vias on the band-gap and transmission characteristics are investigated from the theory of the equivalent circuit. Mathematical expressions which estimate accurately the upper and lower cutoff frequency and bandwidth of the band gap for different side lengths of patches are obtained and verified. Studies show that space between patches changes the bandwidth, but has no influence on the characteristics of the left part of the band gap. When the radius of vias is reduced, the band-gap shifts left and becomes narrow. Finally, The time-domain characteristic of the signal transmission line using EBG structure as a return path is also analyzed. Experiments show that the smaller the period of structure, the worse the signal quality.