零中频接收机IQ不平衡高效校正算法OA
Efficient IQ Imbalance Correction Algorithm for Zero IF Receiver
IQ 不平衡问题是零中频接收机中的首要问题,是影响零中频接收机性能的重要指标.通过将时域信号变换到频域进行参数提取,提高了特征参数的抗噪声性能,并根据正交误差的不同来源进行具体分析,并进行针对性的参数分离和提取,实现了一种IQ 不平衡高效校正算法.仿真结果表明,与传统算法相比,所提算法具有结构简单、易于实现,镜像抑制比可以提高到 60 dB 以上,能够满足高性能零中频接收机实际应用需要.
IQ imbalance is the primary problem in zero-IF receiver,and it is an important index that affects the performance of zero-IF receiver.The anti-noise performance of the feature parameters is improved by converting the time domain signal to the frequency domain for parameter extraction,specific analysis is carried out according to different sources of orthogonal errors,and the parameter separation and extraction are targeted according to different sources of orthogonal errors,so as to realize an efficient IQ imbalance correction algo-rithm.The simulation results show that compared with the traditional algorithm,the proposed algorithm is simple in structure and easy to be implemented,and the image rejection ratio can be increased to more than 60 dB,which can meet the practical application needs of high performance zero-IF receiver.
何安祥;姚凯;侯强;许思耀
中国地质大学(武汉)机械与电子信息学院,湖北 武汉 430074中国地质大学(武汉)机械与电子信息学院,湖北 武汉 430074中国地质大学(武汉)机械与电子信息学院,湖北 武汉 430074中国地质大学(武汉)机械与电子信息学院,湖北 武汉 430074
信息技术与安全科学
IQ不平衡时域频域镜像抑制比分离和提取
IQ imbalancetime domainfrequency domainimage rejection ratioseparation and extraction
《电子器件》 2026 (2)
266-269,4
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