宽频带四端口馈源网络系统设计

发布时间：2018-05-25 02:38

本文选题：卫星通信 + 馈源网络　；参考：《电子与信息学报》2017年06期

【摘要】：展宽现有卫星通信频段的带宽是增大通信容量的有效途径之一。为将C波段通信接收频段带宽展宽为3.625~4.800 GHz,发射频段展宽为5.850~7.025 GHz,该文设计了一种宽频带、结构紧凑、双线极化四端口馈源网络系统,通过采用宽带正交模耦合器与E面侧壁耦合T-接头宽带频率双工器,拓宽了馈源网络的工作带宽,由于该工作频带超过了标准波导的工作带宽,网络各部件的设计采取了非标波导,该文设计了八边形过渡波导解决了系统各部件在整个频带内的匹配问题。研发和测试了该馈源网络系统,测试与仿真结果吻合良好。实测结果表明,所有端口电压驻波比小于1.35,插入损耗小于0.5 dB,收发隔离度大于95 dB。
[Abstract]:Broadening the bandwidth of the existing satellite communication band is one of the effective ways to increase the communication capacity. In order to widen the band bandwidth of C-band communication to 3.625nm 4.800 GHz and transmit band to 5.850,7.025 GHz, this paper designs a broadband, compact two-line polarization four-port feed network system. By using a broadband orthogonal mode coupler coupled with the side wall of the E plane, a broadband frequency duplex is used to widen the working bandwidth of the feed network, because the bandwidth of the working band exceeds that of the standard waveguide. The non-standard waveguide is adopted in the design of each component of the network. In this paper, the octagonal transition waveguide is designed to solve the matching problem of each component of the system in the whole frequency band. The feed network system is developed and tested, and the test results are in good agreement with the simulation results. The measured results show that the VSWR of all ports is less than 1.35, the insertion loss is less than 0.5 dB, and the transceiver isolation is greater than 95 dB.
【作者单位】：中国电子科技集团公司第五十四研究所;西安电子科技大学天线与微波技术重点实验室;
【基金】：国家重点基础研究发展计划(2013CB837902) 国家自然科学基金(11261140641)~~
【分类号】：TN927.2

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