超宽带正交解调接收机性能分析  

The Performance Analysis of Ultra-Wide-Band Quadrature Demodulation Receiver

作　　者：黎向阳[1] 刘光平[1] 周智敏[1] 梁甸农[1] 

机构地区：[1]国防科学技术大学电子工程学院,长沙410073

出　　处：《系统工程与电子技术》2000年第5期58-60,92,共4页Systems Engineering and Electronics

摘　　要：由模拟器件构成的超宽带正交解调接收机不可避免地存在系统失真 ,这些失真的存在有时会严重影响系统的性能。仔细分析了幅度失真、相位失真、幅相不一致性等对接收机性能的影响 ,提出了数字域校正的方法。通过计算机仿真 ,表明了该方法的可行性。最后 ,对某超宽带正交解调接收机的实际测量结果的数字校正 ,验证了这种方法的有效性。The system distortion is inevitable in ultra-wide-band quadrature demodulation receiver consisting of analog devices. The effect of amplitude distortion, phase distortion, amplitude and phase error on the performance of receiver is discussed in this paper, and a method of digital correction is proposed. Finally, the validity of digital correction is verified by simulation and practical measurement of a UWB quadrature demodulation receiver.

关 键 词：接收机 失真 计算机仿真 超宽带 正交调制 

分 类 号：TN852[电子电信—信息与通信工程]