摘要
In order to reduce the gain of a receiving antenna in HPM power measurement,especially in lower frequency, a low gain dipole antenna of L band is designed.By theoretical analysis and numerical simulation,the optimized results of the antenn are obtained:its central frequency is 1.75GHz,the variety of gain is less than 1.1dB in frequency band 1.70—1.80GHz,the estimated value of the power capacity of the antenna is 0.1MW,which can satisfy the demand of corresponding measurement.
为了减小高功率微波尤其在低频段功率测量采用的接收天线的增益,本文设计了一种低增益的L波段偶极天线.通过理论分析和数值模拟,得到该天线的优化结果为:中心频率为1.75GHz,相应的增益为-5.55dB;在1.70GHz—1.80GHz频带内,增益变化不超过1.1dB,功率容量的估算值为0.1MW,可以满足相应测量要求.
