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Photonic-band-gap (PBG) and metamaterial RF-structures for high power millimeter and THz wave electron beam devices

机译:用于高功率毫米波和太赫兹波电子束设备的光子带隙(PBG)和超材料RF结构

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Novel photonic band gap (PBG) waveguides and metamaterial (MM) cavities have been designed in the effort to develop high power millimeter and THz sources. The designed structures are comprised of a periodically corrugated channel sandwiched between two PBG slabs and a multi-cell cavity-resonator designed with fishnet apertures. The simulation analysis shows that trapped non-PBG modes are effectively suppressed down to ~ - 14.3 dB/cm, while PBG modes propagated with ~ 2 dB of insertion loss, corresponding to ~1.14 dB/cm attenuation. The preliminary modeling analysis on the fishnet-embedded cavity shows noticeable improvement of Q-factor and field gradient of the operating mode (TM) compared to those of typical pillbox- or PBG-cavities. The Ka-band PBG-waveguide and S-band fishnet cavity structures will be tested with a microwave test bench/8510C Network Analyzer and 5.5 MW S-band klystron. These structures can be applied to stable short-bunch formation and mono-energetic radiation in high frequency electron beam devices.
机译:为了开发高功率毫米波和太赫兹源,已经设计了新颖的光子带隙(PBG)波导和超材料(MM)腔。设计的结构由夹在两个PBG平板之间的周期性波纹形通道和设计有鱼网孔的多单元腔谐振器组成。仿真分析表明,被捕获的非PBG模式可以有效地抑制到〜-14.3 dB / cm,而PBG模式传播时的插入损耗为〜2 dB,对应于〜1.14 dB / cm的衰减。与典型的药盒或PBG腔相比,鱼网嵌入式腔的初步建模分析表明,工作模式(TM)的Q因子和场梯度得到了显着改善。将使用微波测试台/ 8510C网络分析仪和5.5 MW S波段速调管对Ka波段PBG波导和S波段鱼网腔结构进行测试。这些结构可以应用于高频电子束装置中稳定的短束形成和单能辐射。

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