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Future radar and military communication systems need powerful signal generators with much higher frequencies. In this paper, the preliminary studies of a high power terahertz wave generator are presented. A novel 2.5D fully electromagnetic particle-in-cell simulation tool, UNIPIC, is introduced, and with this code we investigated the ??hot?? characteristics of a prototype 0.14 THz wave generator in...
Future radar and military communication systems need powerful signal generators with much higher frequencies. In this paper, results of the theoretical and numerical simulation studies of a MW-class, large diameter terahertz wave generator are presented. The device consists of a miniaturized foilless diode as well as an oversized rectangular slow wave structure (SWS) which could support surface wave...
Future wireless communication systems make high requirements on the ultra wide bandwidth as well as on the super high data rates. In this paper, we proposed a powerful 0.22 THz sinusoidal signal generator, which could be used as the power sources of carrier frequencies or local oscillators in heterodyne systems. The physical mechanism of THz wave generation was related to the Cherenkov radiation,...
Results of the theoretical and numerical simulation studies of a mega watt, large diameter terahertz backward wave oscillator are presented in this paper. The device consists of a large cross-section (overmoded), slow wave structure (SWS) with a unique profile of wall radius specifically designed to support surface wave and to provide a strong beam-wave coupling at moderate voltage. The Particle-in-cell...
New micromachining techniques now provide the technology to fabricate slow wave structure (SWS) which are commonly used in the backward wave oscillators (BWOs) with dimensions suitable for operation in the terahertz region. In this paper, results of theoretical and numerical simulation studies of a large cross section, cylindrical SWS with the rectangluarly corrugated inner wall are presented. The...
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