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本文叙述了背射模螺旋天线的频率响应理论。基于电流行波的假设,按其分布求出了远区场的解析解。并用增益因子的概念研究了背射螺旋的增益频率特性。结果与 H.Nakano 的数值解有良好的一致性。
This paper describes the theory of frequency response of the backspan helical antenna. Based on the assumption of current traveling wave, an analytical solution of far field is obtained according to its distribution. The gain-frequency characteristics of the backscatter are studied with the concept of gain factor. The result is in good agreement with H. Nakano’s numerical solution.