| 暗室静区反射电平计算中的波束修正模型 |
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| 引用本文： | 宋东安,易学勤,赵学祥.暗室静区反射电平计算中的波束修正模型[J].舰船电子工程,2004,24(4):118-120. |
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| 作者姓名： | 宋东安 易学勤 赵学祥 |
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| 作者单位： | 1. 国防科技电磁兼容性重点实验室,武汉,430064
2. 中国舰船研究院,北京,100085 |
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| 摘 要： | 在微波暗室静区反射电平计算时常采用点源发射模型模拟天线的特性，它适用于低频段或方向性差的天线。但在微波频段，由于天线有较强的方向性而不宜采用点源发射模型。采用菲涅尔一基尔霍夫绕射理论导出了适用微波频段的发射模型。通过分析讨论指出，在暗室的静区反射电平计算时，采用该模型较之点源发射模型而言将更接近实际。
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| 关 键 词： | 微波暗室 静区反射电平 点源发射模型 波束修正发射模型 |
| 修稿时间： | 2003年10月9日 |
Beamwidth Modified Model for Calculation of Reflected Level of Quiet Zone in Anechoic Chamber |
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| Song Dongan,Yi Xueqin,Zhao Xuexiang.Beamwidth Modified Model for Calculation of Reflected Level of Quiet Zone in Anechoic Chamber[J].Ship Electronic Engineering,2004,24(4):118-120. |
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| Authors: | Song Dongan Yi Xueqin Zhao Xuexiang |
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| Institution: | Song Dongan 1) Yi Xueqin 1) Zhao Xuexiang 2) |
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| Abstract: | In calculation of reflected level of quiet zone in anechoic chamber, a spot emission model is often used to simulate antennas' characteristic. The model is useful in low frequency and not in microwave frequency because microwave antennas are of sharper directivity. In this paper, a new emission model, which can be used in higher frequency , has been derived from Fresnel-Kirchhoff diffraction formulation. It has been demonstrated that new model is more appropriate to actualities then spot model . |
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| Keywords: | anechoic chamber reflected level of quiet zone spot emission model beamwidth modified emission model |
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