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A New Method for Increasing Output Power of a Three-Cavity Transit-Time Oscillator |
| HE Jun-Tao;ZHONG Hui-Huang;QIAN Bao-Liang;LIU Yong-Gui |
| College of Science, National University of Defense Technology, Changsha 410073 |
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| Cite this article: |
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HE Jun-Tao, ZHONG Hui-Huang, QIAN Bao-Liang et al 2004 Chin. Phys. Lett. 21 1302-1305 |
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Abstract We propose a new method to increase the output power of a three-cavity transit-time oscillator (TC-TTO). Conventional transit-time effect oscillators, such as the split-cavity oscillator (SCO), super-Reltron, and TC-TTO (or double-foil SCO), etc., have a common feature that the span of any modulating cavity is uniform. The new method is to vary the three-cavity spans from uniform to nonuniform. Its configuration is called the nonuniform three-cavity transit-time oscillator (NTC-TTO). Numerical simulations show that the electron-beam is modulated more deeply in certain NTC-TTOs than that in the TC-TTO with the same whole modulating length, and the output microwave power in certain NTC-TTOs is higher than that in the TC-TTO. The experimental results are in agreement with those of the numerical simulations. The results show that the new method can increase the output power of a microwave tube based on the TC-TTO.
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52.35.-g
52.65.-y
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Published: 01 July 2004
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| PACS: |
52.35.-g
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(Waves, oscillations, and instabilities in plasmas and intense beams)
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52.65.-y
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(Plasma simulation)
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