基于二维电磁带隙(EBG)结构, 设计了工作在0.22 THz的直波导传输线和90°弯波导传输线。数值模拟结果显示: 直波导和弯波导的S21参数在0.22 THz处均大于10-5 dB, 20 GHz模拟频带内的S21参数分别大于-0.001 dB和-0.003 5 dB。EBG结构很好地阻止了电磁波在电磁带隙内部的传播。基于EBG结构波导, 设计了3 dB功分器和H面扇形喇叭阵列天线。数值模拟结果显示: 功分器的S21参数在0.22 THz处为-3 dB, 阵列天线方向性为17.1 dBi, 具有较小的旁瓣和后瓣, E面和H面方向图均具有良好对称性。

Based on two-dimensional electromagnetic bandgap (2-D EBG) structure, both straight and 90°curving waveguide transmission lines working at 0.22 THz were designed. The numerical simulation result shows that the S21 parameters of straight and curving waveguides are both above 10-5 dB at 0.22 THz, they are above -0.001 dB and -0.003 5 dB respectively in the 20 GHz simulation frequency band, and the bandgap has good inhibition to the electromagnetic wave. Based on the EBG waveguide, 3 dB power divider and H-plane horn array antenna were designed. Their numerical simulation result shows that the S21 parameter of the power divider is -3 dB at 0.14 THz, the array antenna has the directivity of 17.1 dBi with small side and back lobe, and both E-plane and H-plane patterns are symmetrical.