An Active Transmission Matrix-Based Nonlinear Analysis for Folded Waveguide TWT Zhang, Ruifeng ; Gong, Huarong ; Lin, Xiaoyi ; Wang, Tieyang ; Xiao, Xiaoyi ; Wang, Zhanliang ; Duan, Zhaoyun ; Gong, Yubin ; Feng, Jinjun ; Travish, Gil Abstract Publication: IEEE Transactions on Electron Devices Pub Date: March 2020 DOI: 10.1109/TED.2019.2962628 Bibcode: 2020ITED...67.1205Z