|
|||||
|
|
| 基于数字补偿的快速频率合成方法的研究 | |
| 引用本文： | 房启志,张盱昊,罗海明,耿爽.基于数字补偿的快速频率合成方法的研究[J].沈阳航空工业学院学报,2007,24(1):65-67,40. |
| 作者姓名： | 房启志 张盱昊 罗海明 耿爽 |
| 作者单位： | 1. 沈阳航空工业学院电子工程系,辽宁,沈阳,110034 2. 电信科学技术研究院,北京,100083 3. 东北微电子研究所,辽宁,沈阳,110032 |
| 摘 要： | 基于I/Q调制的快速频率合成方法比目前采用的频率合成方法更易调试,而且使用灵活。其思路是将信号先通过单边带调制,将较低频率调制到需要的频率范围;然后采用对基带信号的数字预补偿方法来抑制镜像频率和载波泄漏,从而达到应用的目的。文章中还给出一种基于输出信号包络信息的补偿系数调整算法,其仿真结果说明该新补偿算法可以有效抑制镜像频率和载波泄漏。 |
| 关 键 词： | 快速频率合成 镜像频率 载波泄漏 数字预补偿 |
| 文章编号： | 1007-1385（2007）01-0065-03 |
| 收稿时间： | 2006-09-25 |
| 修稿时间： | 2006-09-25 |
A Fast frequency synthesizer technique based on digital Pre-compensatation |
|
| FANG Qi - zhi ,ZHANG Xu - hao ,LUO Hai - ming.A Fast frequency synthesizer technique based on digital Pre-compensatation[J].Journal of Shenyang Institute of Aeronautical Engineering,2007,24(1):65-67,40. | |
| Authors: | FANG Qi - zhi ZHANG Xu - hao LUO Hai - ming |
| Institution: | 1. Shenyang Institute of Aeronautical Engineering, Liaoning Shenyang 110034 ;2. China Academy of Telecom- munication Technology, Beijing 100083;3. Northeast Micro - electronios gradate school, Liaoning Shenyang 110032 |
| Abstract: | A frequency synthesizer technique based on I/Q adjustment makes it easier to debug and use comparing with the ongoing method.First,a low frequency tone is up-converted to the needed frequency range by means of SSB(single side band modulation).Then we perform digital pre-compensation method,which can be used in the processing of base band signal to reject image frequency and protect carrier leak to meet the application purpose.Furthermore,an algorithm according to the envelope of out signals for updating the compensator coefficients is proposed.Simulation results illustrate the excellent performance of the proposed pre-compensation structure can significantly reject image frequency and protect carrier leak. |
| Keywords: | fast frequency synthesizer image frequency carrier leak digital pre-compensation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |