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采用三指形微带馈电方式,设计了一种新型用于实际生产的高增益宽带小型化多层微带阵列天线,而阵列天线总厚度仅为2.5mm。该多层介质结构天线抑制了馈电网络电磁辐射,易于加工生产,增加了结构强度。测试结果表明,该阵列天线增益达到17.3d B,VSWR≤2的相对阻抗达到14%,具有良好的辐射和阻抗匹配特性,对设计宽带相控阵天线很有帮助。
A three-finger microstrip feed mode is adopted to design a new type of high-gain broadband miniaturized multi-layer microstrip array antenna for practical production. The total thickness of the array antenna is only 2.5mm. The multi-layer dielectric structure antenna suppresses the electromagnetic radiation of the feed network, is easy to process and produces, and increases the structural strength. The test results show that the gain of the array antenna reaches 17.3d B, the relative impedance of VSWR≤2 reaches 14%, and has good radiation and impedance matching characteristics, which is very helpful for designing a broadband phased array antenna.