基于脊波导结构的太赫兹超宽带双工器设计
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南京信息工程大学-大学生创新创业训练计划资助项目(XJDC202110300578)

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Design of a terahertz ultra-wideband duplexer based on the ridge waveguide structure
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    摘要:

    在射电天文领域,为了实现更宽频带内多谱线同时观测任务,要求太赫兹超导相干接收机向更宽带方向发展。针对下一代太赫兹超宽带接收机的应用需求,提出了一种频段覆盖180~ 420 GHz(相对带宽达87%)的超宽带脊波导双工器设计,主要包括:180~300 GHz频段和320~420 GHz频段宽带脊波导滤波器设计与变换;超宽带太赫兹多级耦合型脊波导双工器优化设计。仿真结果表明该结构能够在180~300 GHz和320~420 GHz频段双工工作,回波损耗整体优于15 dB,通道间隔离度达20 dB以上。

    Abstract:

    In radio astronomy field, the development of terahertz superconducting coherent receivers with ultra-wideband performance is required to achieve the simultaneous observation of multi-spectral lines in much wider frequency band. In response to the application requirements of the next-generation terahertz ultra-wideband receivers, an ultra-wideband ridge waveguide duplexer with a frequency band covering 180-420 GHz (the fractional bandwidth up to 87%) is developed. The main contents include the design and conversion of broadband ridge waveguide filters in 180-300 GHz and 320-420 GHz band, as well as the optimization of terahertz multi-stage coupled ridge waveguide duplexer. The simulation results show that this structure can be in duplex operation in the 180-300 GHz and 320-420 GHz bands with an overall return loss better than 15 dB and the isolation more than 20 dB.

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张沁旖,丁江乔.基于脊波导结构的太赫兹超宽带双工器设计[J].太赫兹科学与电子信息学报,2021,19(5):804~807

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  • 收稿日期:2021-05-01
  • 最后修改日期:2021-07-18
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  • 在线发布日期: 2021-11-01
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