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基于椭圆形印刷偶极子设计了一种宽频带天线阵列,阵列单元与馈电网络均印制在同一介质基板上,易于加工和集成。对影响天线性能的阵列结构参数进行了分析,得到了能够获得较佳电性能的结构参数。对天线进行了仿真分析与实际测试,仿真与测试结果一致性较好。测试结果表明,该阵列在2.32～5.48GHz频率范围内电压驻波比小于2.0,且在该频率范围内具有定向辐射特性,最低增益为17.7dB,最高增益为22dB,相对带宽达到81%。
A wideband antenna array is designed based on elliptical printed dipoles. Both the array unit and the feeding network are printed on the same dielectric substrate for easy processing and integration. The array structure parameters that affect the performance of the antenna are analyzed, and the structural parameters that can achieve better electrical performance are obtained. The antenna was simulated and the actual test, the simulation and test results are in good agreement. The test results show that the voltage standing wave ratio of the array is less than 2.0 in the frequency range of 2.32-5.48GHz, and the directional radiation characteristic is within this frequency range. The minimum gain is 17.7dB, the highest gain is 22dB and the relative bandwidth is 81%.