The Primary Research of 140GHz EIO

In this paper, a preliminary study of the structure of EIO is based on the EIO of the same aperture. The influence of the length of the coupling hole and the relative opening size on the EIO structure of the 2πoperating point was studied by computer simulation. The dispersion curves and Q values of the 140 GHz EIO in TM 11 and TM 31 modes are analyzed. After obtaining the optimal aperture length, the aperture of the EIO interval is shortened to increase the bandwidth.