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文章应用遗传算法设计并优化了一种宽带加载单极子天线,结合高效的匹配网络以改善天线性能,并对30 MHz～520 MHz频率范围内加载单极子天线和匹配网络的参数进行全局优化,把增益和驻波比作为目标函数综合考虑,得到了全局最优的参数及仿真结果。该天线在30 MHz～520 MHz频率范围内驻波比小于3,增益大于-2.5 dB,具有良好的宽带特性和全向特性,其实测结果良好地满足了要求。
In this paper, a broadband loaded monopole antenna is designed and optimized by using genetic algorithm, and an efficient matching network is used to improve the performance of the antenna. The parameters of the monopole antenna and matching network in the frequency range from 30 MHz to 520 MHz are globally optimized , Taking the gain and VSWR as the objective function, the global optimal parameters and simulation results are obtained. The antenna has a VSWR of less than 3 in the frequency range of 30 MHz to 520 MHz and a gain of more than -2.5 dB, which has good broadband characteristics and omnidirectional characteristics. The measured results well meet the requirements.