A Novel Scheme for Gain and Power Enhancement of THz TWTs by Extended Interaction Cavities
| العنوان: | A Novel Scheme for Gain and Power Enhancement of THz TWTs by Extended Interaction Cavities |
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| المؤلفون: | Zhigang Lu, Tao Tang, Wei Shao, Yubin Gong, Shaomeng Wang, Changqing Zhang, Zhaoyun Duan, Shi Ningjie, Huarong Gong, Hanwen Tian, Zhanliang Wang, Sheel Aditya |
| المصدر: | IEEE Transactions on Electron Devices. 67:667-672 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Physics, business.industry, Terahertz radiation, Maximum gain, Amplifier, Bandwidth (signal processing), Cathode ray, Optoelectronics, Electrical and Electronic Engineering, business, Electronic, Optical and Magnetic Materials, Voltage |
| الوصف: | A novel scheme is proposed for the enhancement of the gain and output power of terahertz (THz) traveling-wave tube (TWT) amplifiers. The scheme combines a slow-wave structure (SWS) and multigap resonant cavities, resulting in a complementary hybrid of traveling-wave and standing-wave elements, thus offering a compact circuit length. The idea has been verified by a specific design of a 220-GHz TWT amplifier by means of particle-in-cell (PIC) simulations. For an electron beam with a voltage of 21 kV and a current of 200 mA, a maximum gain of 42.22 dB and a 3-dB bandwidth of 6.5 GHz has been achieved while the overall circuit length is only 38 mm. For an input power of 11.25 mW, the CW peak power is predicted to be 187.5 W at 220 GHz, corresponding to an electronic efficiency of 4.47%. These simulation results predict a performance that well exceeds that reported for conventional TWTs, along with a significant reduction of the input power and circuit length. |
| تدمد: | 1557-9646 0018-9383 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::e3bcde73a5e791654988575d419bc902 https://doi.org/10.1109/ted.2019.2958749 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........e3bcde73a5e791654988575d419bc902 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15579646 00189383 |
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