Design of the 94GHz, TE62 Mode Generator Using Quasi-Optical Techniques

This paper details the core of the high-order TE ₆₂ mode generator components -the coaxial resonant cavity. In order to obtain high purity TE ₆₂ mode and improve the isolation among the modes, we use a cavity with an improved coaxial structure. The slowly variable section open coaxial cavity structure can make the TE ₆₂ mode well separated from its nearby modes. In this paper, the influence of the inner and outer radii of the coaxial cavity on the resonant frequency is presented. The TE ₆₂ mode purity of the cavity was calculated by the MATLAB program to be 95.3% and the result of the HFSS simulation after the optimization design of the W-band high-purity TE ₆₂ mode cavity is given, which is in close agreement with the ideal field distribution.