Design Procedure for a Broadband TE11/HE11 Mode Converter for High-Power Radar Applications

Abstract The HE 11 hybrid mode, propagating in an overmoded corrugated circular waveguide, is widely used for low loss transmission of high-power microwaves. Due to the inherent broadband frequency behaviour, this will be also essential future radar applications, like space debris observation earth orbit (LEO). A promising amplifier concept such sensors a helical gyro-TWT. However, since mode not suitable electron-beam-wave interaction kind vacuum electron device, additional converter required. present paper addresses design procedure converter, designed gyro-TWT intended applications W-band. under consideration can easily transferred waveguide TE mode. Therefore, ↦ addressed here. based on scattering matrix formalism and leads high content ≥98.6% within considered range from 92 GHz 100 GHz. Inside band, even better reaches ≈ 99.7% at ≈95 This allows operation applications.