Investigations of Advanced, Slow-Wave, Microwave Vacuum ELectron Devices

摘要

Our major research breakthroughs to date include: (1) Developing and operating a novel, multi-sensored I'Wl' for research of fundamental nonlinear physics in MPM-class TWTs, Advancing a new understanding of the physics of nonlinear distortions in TWTs, (2) Developing a new computational method to model ID linear-beam VEDs with Eulerian formulations, including the effects of charge overtaking, Establishing the fundamental physical mechanisms of harmonic and distortion product injection for linearization of TWTs, (3) Identifying a novel TWT transmitter configuration enabling extremely linear amplification of digitally-modulated signals while operating saturated and thus at maximum efficiency, (4) Completing the first combined experimental and simulation study of impulse amplification in TWTs revealing realistic prospects for novel applications to impulse radar, impulse communications, and impulse response measurements of small signal gain characteristics, (5) Conducting pioneering investigations of xray LIOA, UV LIGA and deep reactive ion etching methods for microfabricating mmwave and THz regime TWTs, and Developed and disseminated a suite of 1D TWT simulation codes for teaching and research of TWTs, making them available as open source software at http://www.1msuite.or2.