| 用正交乘积法测量频率特性 |
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| 引用本文： | 阚继泰. 用正交乘积法测量频率特性[J]. 北京理工大学学报, 1992, 12(3): 86-90 |
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| 作者姓名： | 阚继泰 |
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| 作者单位： | 北京理工大学电子工程系 |
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| 摘 要： | 提出了一种测量频率特性的新方法——正交乘积法.理论分析表明,正交乘积法比传统方法能显著减小测量阻带频率特性时的误差,扩展阻带衰减的可测范围.实验证实即使被测相对衰减达到70dB,仍未发现误差。
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| 关 键 词： | 频率特性 阻带 正交乘积法 |
Quadrature Multiplication Method in the Measurement of Frequency Characteristics |
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| Kan Jitai. Quadrature Multiplication Method in the Measurement of Frequency Characteristics[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 1992, 12(3): 86-90 |
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| Authors: | Kan Jitai |
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| Abstract: | A new method for measuring the frequency characteristics--the quadraturemultiplication method, is set forth. Theoretical analysis shows that the advantage of the quadrature multiplication method over the conventional methods lies in that it can markedly reduce the error in the frequency characteristics of the rejection band, so that it can extend the measurable extent of the rejection-band attenuation. Actual tests verified that almost no error could be found even when the relative attenuation reached 70 dB. |
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| Keywords: | frequency characteristic attenuation phase shifting/quadrature voltage rejection band |
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