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Radio-Frequency Characteristics of a Printed Rectangular Helix Slow-Wave Structure |
| FU Cheng-Fang, WEI Yan-Yu, WANG Wen-Xiang, GONG Yu-Bin |
| National Key Laboratory of High Power Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu 610054 |
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| Cite this article: |
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FU Cheng-Fang, WEI Yan-Yu, WANG Wen-Xiang et al 2008 Chin. Phys. Lett. 25 3478-3481 |
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Abstract A new type of printed rectangular helix slow-wave structure (SWS) is investigated using the field-matching method and the electromagnetic integral equations at the boundaries. The radio-frequency characteristics including the dispersion equation and the coupling impedance for transverse antisymmetric (odd) modes of this structure are analysed. The numerical results agree well with the results obtained by the EM simulation software HFSS. It is shown that the dispersion of the rectangular helix circuit is weakened, the phase velocity is reduced after filling the dielectric materials in the rectangular helix SWS. As a planar slow-wave structure, this structure has potential applications in compact TWTs.
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| Keywords:
84.40.Fe
84.47.+w
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Received: 29 May 2008
Published: 29 August 2008
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| PACS: |
84.40.Fe
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(Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))
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84.47.+w
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(Vacuum tubes)
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