| 应用于感知无线电的可重构抗干扰射频收发机 |
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| 引用本文： | 游长江,柳靖,张晓东,朱晓维.应用于感知无线电的可重构抗干扰射频收发机[J].东南大学学报,2011(2):123-127. |
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| 作者姓名： | 游长江 柳靖 张晓东 朱晓维 |
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| 作者单位： | 东南大学毫米波国家重点实验室 |
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| 基金项目： | The National Natural Science Foundation of China(No.60621002);the National High Technology Research and Development Program of China(863 Program)(No.2009AA011801) |
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| 摘 要： | 介绍了一种应用于感知无线电的射频收发机,该射频收发机包含一个零中频接收机和一个直接上变频发射机.在与电视信号共存的环境中,射频接收机采用可调信道滤波器组来抑制邻近信道干扰.采用了具有宽动态范围、高线性度的低噪声放大器来提升零中频接收机的抗干扰性能.同时,采用高线性功率放大器来提高直接上变频发射机的邻近信道功率比特性.测...
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| 关 键 词： | 零中频 直接上变频 抗干扰 感知无线电 白频谱 |
Reconfigurable anti-interference RF transceiver for cognitive radio application |
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| u Changjiang,u Jing,g Xiaodong,hu Xiaowei.Reconfigurable anti-interference RF transceiver for cognitive radio application[J].Journal of Southeast University(English Edition),2011(2):123-127. |
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| Authors: | u Changjiang u Jing g Xiaodong hu Xiaowei |
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| Institution: | (State Key Laboratory of Millimeter Waves,Southeast University,Nanjing 210096,China) |
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| Abstract: | An RF transceiver composed of a zero-IF receiver and a direct up-conversion transmitter for cognitive radio applications is presented.The adjustable channel filter array in the receiver is used to suppress adjacent channel interference in televisions signal coexistence environments.The low noise amplifier(LNA) with wide dynamic range and high linearity is employed to enhance the anti-interference competence of the zero-IF receiver.Meanwhile,the high linearity power amplifier(PA) is used to promote the adjacent channel power ratio(ACPR) characteristic of the direct up-conversion transmitter.The measured error vector magnitude(EVM) results show that the anti-interference competence of the zero-IF receiver is dramatically enhanced by employing a channel filter array.The measured ACPR of the direct up-conversion transmitter is-47.98 dBc on the channel centered at 714 MHz when the output power is 27 dBm. |
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| Keywords: | zero-IF direct up-conversion anti-interference cognitive radio white space spectrum |
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