Simulation research of a new transit-time oscillator

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作者：
Institute of Applied Electronics, China Acad. of Eng. Phys., P.O.Box 919-1015, Mianyang 621900, China [1 ]
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来源：
Qiangjiguang Yu Lizishu | 2007年 / 8卷 / 1343-1346期
关键词：
Cathodes - Computer simulation - Electric impedance - Electron beams - Microwave devices;
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摘要：
A new low-impedance axial transit-time oscillator with six cavities at C-band was designed, based on three-cavity transit time oscillator (TTO). The impedance of this oscillator is about 15 Ω, the microwave is exported in coaxial wave-guide. The oscillator possesses a large area cathode without extra magnetics. The oscillator is simulated in 2D model by 2.5-dimentional PIC code, the peak values of input voltage and current are 483 kV and 32.5 kA respectively; the average peak value of output microwave is over 3.0 GW, the main frequency is 3.75 GHz. The power efficiency of microwave is above 19% and better than that of the normal low-impedance oscillators.
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