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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,求解了远区场的近似解析解。结果与Nakano的数值解基本一致,笔者应用该理论研究了以背射模螺旋作为馈源,导体圆板作反射器的新型天线的辐射特性。取得了具有实用意义的结果。
This paper describes the theory of frequency response of the backspan helical antenna. Based on the assumption of current traveling wave, an approximate analytic solution of the far field is solved. The results are in good agreement with Nakano’s numerical solution. The author has studied the radiation characteristics of a new type of antenna with a backspan spiral as a feed and a conductive circular plate as a reflector. Has achieved practical results.