Figure 13
From: Multiple-beam and double-mode staggered double vane travelling wave tube with ultra-wide band
(a) Input power versus output power. (b) The output signal of the PIC simulation at 94 GHz. The max voltage of output signal is about 46 V, so the output power is over 2120 W with a 0.12 W input power corresponding to a 42.5 dB gain. (c) The growth rate of whole SWS. Maximum power reaches 8.43 W before the attenuator then falls, and the growth rate of whole structure is 0.62 dB/mm corresponding to 0.83 dB/period. (d) Frequency spectra of the input, reflection and output signal.
