| 利用锁定放大器实现微波天线方向图的精确测量 |
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| 引用本文： | 秦巍.利用锁定放大器实现微波天线方向图的精确测量[J].河南科技大学学报(自然科学版),2006,27(4):52-54. |
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| 作者姓名： | 秦巍 |
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| 作者单位： | 忻州师范学院,山西,忻州,034000 |
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| 摘 要： | 采用常规的测量放大器或选频放大器进行微波天线方向图的高精度测量是困难的,本文设计了利用锁定放大器精确测量微波天线方向图的电路,该方法是从信号和噪声本身的特性出发,针对信号的周期性和噪声的随机性的特点来抑制噪声,提取信号。测试实验结果表明,采用该电路能极大的提高信噪比,可靠检测出有效信号。
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| 关 键 词： | 微波天线 天线方向图 锁定 放大器 精确测量 |
| 文章编号： | 1672-6871（2006）03-0052-03 |
| 收稿时间： | 2005-11-12 |
| 修稿时间： | 2005年11月12 |
The Precise Measurement of Microwave Antenna Pattern with Lock in Amplifier |
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| QIN Wei.The Precise Measurement of Microwave Antenna Pattern with Lock in Amplifier[J].Journal of Henan University of Science & Technology:Natural Science,2006,27(4):52-54. |
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| Authors: | QIN Wei |
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| Abstract: | High-quality measurement of microwave antenna pattern is a difficult problem with measuring amplifier or selective amplifier.By means of lock in amplifier,the precise measuring system of microwave antenna pattern has been devised in this paper.Contrast to the conventional measure method on intercommunity characteristics of signal and noise,the paper gives a new method which uses periodic of signal and random of noise to restrain noise and take out signal.Conclusion showed that signal-to-noise may be improved highly and effective signals can be reliably detected. |
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| Keywords: | Microwave antenna Antenna pattern Lock in amplifier Measurement precision |
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