| ADS辅助实现线极化到圆极化的转换 |
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| 作者单位： | 中国科学院上海天文台 上海 |
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| 摘 要： | 给出C波段双圆极化低噪声接收机中圆极化输出的实现方案,研究了利用90°电桥进行线- 圆极化转换时两个线极化通道增益及相位的平衡度对圆极化隔离的影响。分析了如何通过调节一对同轴电缆的长度差来补偿相位不平衡,并借助ADS软件计算了该长度差,实现了线-圆极化转换,取得接收机两个圆极化之间的隔离度好于20dB的效果。
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| 关 键 词： | 接收机 线极化 圆极化 计算机辅助设计 |
| 收稿时间： | 07 23 2005 12:00AM |
| 修稿时间： | 10 18 2005 12:00AM |
REALIZATION OF LINEAR-CIRCULAR POLARIZATION CONVERSION WITH THE ADS |
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| Authors: | CHEN Songlin |
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| Abstract: | A Solution to realize linear-circular polarization conversion for a C band dual-circular polarized low noise receiver is presented in this paper, and the relationship between the transmission balance of the linear channels and the polarization conversion is studied. This paper also analyzes how to compensate the phase unbalance by tuning the length difference of a pair of coaxial cables, and introduces the steps to realize the conversion with ADS software. The linear-circular polarization conversion is realized and the separation between LHC and RHC is better than 20dB. |
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| Keywords: | Receiver - Linear polarization - Circular Polarization - CAD |
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