期刊
IEEE ELECTRON DEVICE LETTERS
卷 41, 期 10, 页码 1580-1583出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LED.2020.3015036
关键词
Metamaterial; extended interaction klystron; miniaturization; high electronic efficiency
资金
- National Natural Science Foundation of China [61871095, 61921002, 61531010]
- Cell Nature Science (CNS) project of the University of Electronic Science and Technology of China (UESTC) [Y03111023901014005]
A miniaturized, high electronic efficiency, S-band metamaterial extended interaction klystron (MEIK) is proposed. The metamaterial-based extended interaction resonant cavitieswere designed, fabricated, and tested, the assembled and cold-tested results confirm the feasibility of miniaturization in MEIK. Furthermore, the particle-in-cell (PIC) simulation predicts that, typically, when the beam voltage and current are 30 kV and 3 A, respectively, the focusing magnetic field is 1000 G, a 3-cavity MEIK yields the output power of 56 kWat 2.453GHz, with the saturated gain of 47 dB and the electronic efficiency of 62%, and, importantly, with the cavity diameter of its interaction structure being similar to 1/2 of a conventional extended interaction klystron. As a power amplifier, the emerging MEIK with its miniaturization and high electronic efficiency has potential applications such as in future accelerators and microwave heating systems.
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