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Investigation on a Ka Band Diamond-Supported Meander-Line SWS

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Abstract

The microstrip meander-line traveling wave tube (TWT) is a kind of small sized, low voltage, low cost, and easy to fabricate TWT. It is an attractive choice for many applications, such as communication systems, phased array radars, security detectors, and electronic counter measure (ECM) instruments. In this paper, a Ka band U-shape meander-line slow wave structure (SWS) supported by a diamond rod is presented. The dispersion characteristics of this meander-line SWS are analyzed using CST MW Studio. The S-parameter simulation results show that the reflection is below − 15 dB between 32 and 38 GHz, and the particle-in-cell (PIC) simulation reveals that this meander-line TWT can produce 57 W output power at 36 GHz, when it is driven by a 8.1 kV, 0.04 A sheet beam with rectangular cross-sectional area of 1.0 mm × 0.12 mm. This meander-line SWS is manufactured, assembled, and tested. The good agreement between the simulated and measured S11 has been achieved and the mismatch between the simulated and measured S21 has been discussed at the end.

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Funding

This work is supported by the National Natural Science Foundation of China under (Grant Nos. 61531010, 61921002) and by Science and Technology on High Power Microwave Laboratory Fund (Grant No 6142605180201) and by Sichuan Science Fund (Grant No. 2020YFSY0011) and by the Research Funds for the Central Universities(Grant No. ZYGX2019J016).

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Authors and Affiliations

  1. School of Electronics Science and Engineering, University Electronic Science and Technology of China (UESTC), Chengdu, 610054, China

    Zhanliang Wang, Liangxin Su, Zhaoyun Duan, Huarong Gong, Zhigang Lu & Yubin Gong

  2. Jihua laboratory, Foshan, 528000, China

    Qiang Hu

  3. Beijing Vacuum Electronics Research Institute (BVERI), Beijing, 100015, China

    Jinjun Feng

  4. Institute of Applied Electronics, China Academy of Engineering Physics (CAEP), Mianyang, 621900, China

    Shifeng Li

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  1. Zhanliang Wang
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  2. Liangxin Su
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  3. Zhaoyun Duan
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  4. Qiang Hu
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  5. Huarong Gong
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  6. Zhigang Lu
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  7. Jinjun Feng
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  8. Shifeng Li
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  9. Yubin Gong
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Correspondence to Zhanliang Wang.

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Wang, Z., Su, L., Duan, Z. et al. Investigation on a Ka Band Diamond-Supported Meander-Line SWS. J Infrared Milli Terahz Waves 41, 1460–1468 (2020). https://doi.org/10.1007/s10762-020-00737-8

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  • DOI: https://doi.org/10.1007/s10762-020-00737-8

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