Project supported by the National Natural Science Foundation of China(Nos.61771116 and 62022022);the National Key R&D Program of China(No.2018YFB1801502);the China Postdoctoral Science Foundation(No.2021TQ0057)。
This paper presents a mechanical reliability study of 3-dB waveguide hybrid couplers in submillimeter and terahertz bands.To show the necessity of improving the mechanical properties of the coupler’s branch in submil...