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针对传统的水平极化波导缝隙对全向天线带宽较窄、成本较高的缺点,该文提出了一种基于基片集成波导(S IW)工艺的全向辐射的波导缝隙天线。该天线由2个背靠背安装的S IW缝隙天线阵组成,并且由隐藏在两波导之间的带状线通过探针馈电。可以实现复杂的并行馈电网络,在不影响天线全向性的同时扩展阵列带宽。给出了天线的图片和结构图。该天线水平面方向图起伏小于2.5 dB,而端口反射系数小于-10 dB的带宽达到12.5%。这种多层方案可以用于同时对增益和带宽有较高要求的场合。
In order to reduce the bandwidth of conventional omnidirectional antenna and reduce the cost of traditional omnidirectional antenna, a waveguide slot antenna with omni-directional radiation based on SIOW technology is proposed. The antenna consists of two back-to-back mounted S IW slot antenna arrays and is fed through the probe by a stripline hidden between the two waveguides. Can achieve a complex parallel feed network, without affecting the antenna omni-directional expansion of array bandwidth. The picture and structure of the antenna are given. The antenna has an undulation of less than 2.5 dB in the horizontal plane and 12.5% of the port reflection factor of less than -10 dB. This multi-layer scheme can be used for applications where both gain and bandwidth requirements are high.