0.2 THz频段的光子晶体微带天线研究

将缺陷型一维光子晶体应用在微带天线上，设计了一款工作在0.2 THz 频段处的光子晶体微带天线，并且利用基于有限元法的三维电磁仿真软件 HFSS 以及软件 Origin 进行模拟仿真及作图。研究表明：光子晶体微带天线的增益可以达到9.3 dB，与普通微带天线相比增益增加了2.5 dB。并且讨论了光子晶体的周期层数对微带天线的影响，发现光子晶体周期层数为3层时，天线的回波损耗最低。然后以周期层数为3层的光子晶体微带天线为例，讨论了不同的光子晶体与微带天线的距离对天线的增益和回波损耗的影响。

Study on photonic crystal microstrip antenna at 0.2 terahertz frequency

One dimensional photonic crystals with insertion of defect are applied to the microstrip antenna. The photonic crystal microstrip antenna is designed at 0.2 THz frequency,and the three dimensional electromagnetic simulation software HFSS based on finite element method and software Origin are used to simulate and draw. The study results show that the gain of the photonic crystal microstrip antenna can reach 9.3 dB,which is increased by 2.5 dB compared with the gain of normal microstrip antenna. The effect of different cycles of photonic crystal on the proposed microstrip antenna is discussed. When the cycle is three,the return loss of the antenna is lowest. Taking the three cycle of photonic crystal microstrip antenna as an example,the influence of the different distances between the photonic and the microstrip antenna on the gain and the return loss of the proposed antenna is discussed.