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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yang Liu Yu-bin Gong Yan-yu Wei Jin Xu Zhao-yun Duan Wen-xiang Wang |
| Copyright Year | 2010 |
| Description | Author affiliation: Vacuum Electron. Nat. Lab., Univ. of Electron. Sci. & Technol. of China, Chengdu, China (Yang Liu; Yu-bin Gong; Yan-yu Wei; Jin Xu; Zhao-yun Duan; Wen-xiang Wang) |
| Abstract | Characterized with full-metal structure, low RF loss, broad bandwidth and relatively high output power, folded waveguide (FW) is considered as a prospective slow-wave structure for traveling-wave tubes (TWTs) at millimeter and sub-millimeter wave range. In this paper, a high efficient FW slow-wave structure is designed for 60GHz central frequency TWT. Firstly, cold-test properties such as phase velocity, beam-wave interaction impedance and cold circuit attenuation are studied and optimized by 3D simulator. Based on the detailed cold-test simulation, the optimized structural parameters for the FW circuit with high interaction impedance, low cold-test attenuation and fairly flat phase velocity dispersion are obtained. And then, the beam-wave interaction simulation is also carried out with the PIC code in CST Particle Studio, to obtain the beam-wave interaction efficiency and saturated output power for lossy FW circuit with constant-period structure. In order to improve the beam-wave interaction and saturated output power further, varying-period structure is adopted. It shows that the saturated output power and beam-wave interaction efficiency are are greatly improved and also the input power at saturation is lower at the 58~62GHz frequency range when we adopt the varying-period FW structure. The detailed analysis will be reported in the full manuscript. |
| Starting Page | 249 |
| Ending Page | 250 |
| File Size | 442508 |
| Page Count | 2 |
| File Format | |
| ISBN | 9781424466450 |
| e-ISBN | 9781424466443 |
| DOI | 10.1109/IVESC.2010.5644194 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-10-14 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Content Type | Text |
| Resource Type | Article |
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