方超,梁仙灵,刘一帆,等. 一种K频段宽带双极化滤波喇叭天线设计[J]. 电波科学学报,2022,37(2):296-303. DOI: 10.12265/j.cjors.2021031
      引用本文: 方超,梁仙灵,刘一帆,等. 一种K频段宽带双极化滤波喇叭天线设计[J]. 电波科学学报,2022,37(2):296-303. DOI: 10.12265/j.cjors.2021031
      FANG C, LIANG X L, LIU Y F, et al. Design of a K-band broadband dual-polarized filtering horn antenna[J]. Chinese journal of radio science,2022,37(2):296-303. (in Chinese). DOI: 10.12265/j.cjors.2021031
      Citation: FANG C, LIANG X L, LIU Y F, et al. Design of a K-band broadband dual-polarized filtering horn antenna[J]. Chinese journal of radio science,2022,37(2):296-303. (in Chinese). DOI: 10.12265/j.cjors.2021031

      一种K频段宽带双极化滤波喇叭天线设计

      Design of a K-band broadband dual-polarized filtering horn antenna

      • 摘要: 文中设计了一种K频段宽带双极化滤波喇叭天线,该天线采用阶梯型喇叭代替传统喇叭提升了天线效率,并通过在馈电波导冗余空间中引入一种T/Π型滤波结构,提升了天线带外的抗干扰能力. 仿真和实验结果表明,该双极化天线的−10 dB阻抗带宽超过5 GHz,覆盖了K/Ka频段卫星的下行频段,天线效率超过58%,并在其上行频段实现了超过33.1 dB的带外抑制,该天线可作为单元用于K/Ka频段卫星下行频段的大型阵列天线设计.

         

        Abstract: This paper introduces a broadband dual-polarized filtering horn antenna operating in K-band. By using a stepped horn instead of the traditional horn and introducing the filtering structure of T/Π-type units into the redundant space of the waveguide feeder, the antenna obtains a high efficiency and an out-of-band anti-interference ability. Simulated and measured results show that the −10 dB impedance bandwidth of the dual-polarized antenna is more than 5 GHz, covering the downlink frequency band of the K/Ka satellite. The antenna efficiency is higher than 58%, and it also achieves the uplink frequency band suppression of more than 33.1 dB. The antenna can be used as an element for the design of K/Ka satellite downlink large array antenna.

         

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