supported by National Natural Science Foundation of China(60532010 and 60601007);by Specialized Research Fundfor the Doctoral Programof Higher Education(20070614041)
This work is supported by the National Natural Science Foundation of China (No.60532010) and the Talent Fund of Chinese Educational Administration (No.NCET-05-0800).
A novel Folded waveguide (FW) amplifier for Traveling-wave tubes (TWT) was investigated. It is formed by adding rectangular grooves periodically to the bends of a normal FW. In order to test its performance, a thr...