To develop miniaturized and compact vacuum electron devices, new approaches to device manufacturing must be embraced. Here, a terahertz oscillator based on carbon nanotube (CNT) cold cathode is investigated through particle-in-cell (PIC) simulations. The studies show that the high-frequency (HF) field excited by the device can modulate the field emission current efficiently, with an output power of 4.6 W at 139.4 GHz obtained at an operating voltage of 2.9 kV and an initial emission current and current density of 15.8 mA and 7.65 A/cm 2 , respectively, and the efficiency is 10.0%.
- Electronics engineering
- electron emission
- field electron emission
- Carbon nanotube (CNT)
Xu, X., Yuan, X., Chen, Q., Cole, M., Zhang, Y., Xie, J., ... Yan, Y. (2020). A Low-Voltage, Pre-Modulation Terahertz Oscillator Based on a Carbon Nanotube Cold-Cathode. IEEE Transactions on Electron Devices, 67(3), 1266 - 1269. https://doi.org/10.1109/TED.2020.2968932