Abstract
The results of both numerical simulations and experimental study of the traveling-wave amplification in the <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${W}$ </tex-math></inline-formula> -band circuit with the nonuniform grating are presented and discussed. The circuit supports a wide sheet electron beam that is promising for a signal gain increase in terahertz (THz) amplifiers. The small-signal gain up to 30 dB is predicted by the simulations of the two-section amplifier in the frequency range from 94 to 99 GHz. The experimental tests of the 14.3-mm input section, powered by a 3.8 kV, 100-mA sheet electron beam, revealed the linear gain of 12 dB and instantaneous bandwidth of 2 GHz. The full bandwidth of 5 GHz has been experimentally observed by adjusting the beam voltage from 3.6 to 4.1 kV.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
