| 一种改善雷达收发隔离的新方法 |
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| 引用本文： | 吕波,郑秋容,袁乃昌.一种改善雷达收发隔离的新方法[J].系统工程与电子技术,2008,30(8). |
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| 作者姓名： | 吕波 郑秋容 袁乃昌 |
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| 作者单位： | 国防科技大学四院微波技术发展中心,湖南,长沙,410073 |
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| 摘 要： | 针对连续波体制雷达的特点,提出了采用光子晶体高阻表面提高雷达收发隔离的新方法.该方法利用光子晶体频率带隙与周期结构尺寸之间的关系,可灵活设计出雷达工作频段的高阻表面.将光子晶体高阻表面加装到某型连续波雷达的天线上,提高雷达收发隔离度达15 dB,证明了该方法的有效性.
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| 关 键 词： | 收发隔离 光子晶体 高阻表面 连续波雷达 |
Novel method to improve radar transmit-receive isolation |
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| L Bo,ZHENG Qiu-rong,YUAN Nai-chang.Novel method to improve radar transmit-receive isolation[J].System Engineering and Electronics,2008,30(8). |
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| Authors: | L Bo ZHENG Qiu-rong YUAN Nai-chang |
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| Institution: | L(U) Bo,ZHENG Qiu-rong,YUAN Nai-chang |
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| Abstract: | A novel method which is fit for the CW radar to improve transmit-receiver isolation is presented.This method is using high-impedance electromagnetic surface.Utilizing the relation between the frequency band-gap and the dimension of the periodic structure,the high-impedance surface can easily be designed at radar frequency.The designed high-impedance surface is applied to a type of CW radar,and measurement results show that the high-impedance surface can remarkably decrease transmit-receiver mutual coupling up to 15 dB,which proves the validity of the method. |
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| Keywords: | transmit-receive isolation photonic crystal high-impedance surface CW radar |
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