Novel transit-time oscillator (TTO) combining advantages of radial-line and axial TTO
Xu Wei-Li, He Jun-Tao, Ling Jun-Pu, Song Li-Li, Deng Bing-Fang, Dai Ouzhixiong, Ge Xing-Jun
       

Electric field | E | distribution in extractor of (a) novel TTO and (b) traditional TTO.