小型射频拉远模块电源系统设计与实现
发布时间：2018-07-26 17:19
【摘要】：作为移动通信基站核心设备的射频拉远模块技术不断更新,发射功率提升迅速,由此带来的射频拉远模块电源系统的匹配成了它的一个研发方向。随着科学技术的进步,射频拉远模块朝着小型化方向发展,其内部电源设计要求较以往更加苛刻。我们不但需要减小电源体积,还需要增加电源功率输出,同时保障电源的可靠性。近几年来,电源控制技术以及功率转换技术的进步使得上述看似矛盾的问题得到了突破。功率器件工艺上的不断改进,新型磁性材料的广泛应用,不断融入新的相关科技,都使得通信电源变得更加可靠更加稳定,而且电磁兼容,系统的动态响应等性能指标也取得巨大进步。现代数字化电路的引入,也让电源更加智能化,可以通过程序控制电源输出,并进行实时监控。本论文正是针对上述问题,以高性能输出小型射频拉远模块电源系统为主要的研究对象,在深入分析当今开关电源理论和技术原理的基础上,设计一款高功率密度的小型射频拉远模块电源系统。主要内容为:1.确认电源系统输入输出性能指标要求,综合考虑功率需求、运行环境及可靠性要求,根据实际需求整合电源输出,并拟制出小型射频拉远模块电源系统设计规范书。2.根据电源系统设计规范书设计电源系统解决方案。选择小封装电源控制芯片,分析并应用此类芯片设计出高性能输出DC-DC电源,精度在1%以内,纹波输出10mV以内,达到国内先进水平。3.研究冲击电流抑制电路,设计一种新型开关模式冲击电流抑制电路,以使小封装功率场效应管能应对更大的冲击电流,从而缩减电源输入级尺寸。研究两线系统的特殊性,并以此设计新型正激电路,利用原副边交替输出使电源变压器在两个开关周期内交替退磁,简化了电路并提高了效率。4.研究I2C总线,完善电源系统功能设计,使得电源输出电压可通过数字信号调节,天线外送电源通道切换数字可控以及电源输出电压的实时监控。5.研究通信类电源相关外围测试项目,针对小型射频拉远模块的特殊性设计测试方法。对测试中出现的问题进行分析验证,最终提供满足各项性能指标和功能需求的产品。
[Abstract]:As the core equipment of the mobile communication base station, the technology of RF remote module is constantly updated, and the transmission power is raised rapidly. The matching of RF remote module power supply system has become one of its research and development directions. With the development of science and technology, RF remote module is developing towards miniaturization, and its internal power supply design is more demanding than ever before. We not only need to reduce the power supply volume, but also need to increase the power output, while ensuring the reliability of the power supply. In recent years, the progress of power control technology and power conversion technology has made a breakthrough in these seemingly contradictory problems. The continuous improvement in the process of power devices, the wide application of new magnetic materials, and the continuous integration of new related technologies have made the communication power supply more reliable and stable, and electromagnetic compatibility. The system dynamic response and other performance indicators have also made great progress. The introduction of modern digital circuit also makes the power more intelligent, can control the output of power through the program, and monitor in real time. Aiming at the above problems, this paper takes the high performance output small RF remote module power supply system as the main research object, on the basis of in-depth analysis of the theory and technical principle of current switching power supply. A high power density power supply system for RF remote module is designed. The main content is: 1. The input and output performance requirements of the power supply system are confirmed. Considering the power demand, the operating environment and the reliability requirements, the power output is integrated according to the actual demand, and the specification for the design of the power supply system of the small radio-frequency remote module is developed. According to the power system design specification book, design the power system solution. Select small package power supply control chip, analyze and apply this kind of chip to design high performance output DC-DC power supply, the precision is less than 1%, ripple output 10mV is less than, reach the domestic advanced level. 3. The impulse current suppression circuit is studied and a novel switching mode impulse current suppression circuit is designed so that the small encapsulated power FET can cope with larger impulse current and thus reduce the size of the input stage of the power supply. The particularity of two-wire system is studied and a new type of forward circuit is designed. The power transformer is alternately demagnetized in two switching cycles by using the alternating output of the primary and secondary edges, which simplifies the circuit and improves the efficiency. I2C bus is studied to perfect the function design of power supply system, so that the output voltage of power can be adjusted by digital signal, the power supply channel can be switched by digital control and the output voltage of power supply can be monitored in real time. The peripheral test project of communication power supply is studied, and the test method is designed according to the particularity of small RF remote module. Analyze and verify the problems in the test, and finally provide the products that meet the performance and function requirements.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5;TN86
本文编号：2146724
[Abstract]:As the core equipment of the mobile communication base station, the technology of RF remote module is constantly updated, and the transmission power is raised rapidly. The matching of RF remote module power supply system has become one of its research and development directions. With the development of science and technology, RF remote module is developing towards miniaturization, and its internal power supply design is more demanding than ever before. We not only need to reduce the power supply volume, but also need to increase the power output, while ensuring the reliability of the power supply. In recent years, the progress of power control technology and power conversion technology has made a breakthrough in these seemingly contradictory problems. The continuous improvement in the process of power devices, the wide application of new magnetic materials, and the continuous integration of new related technologies have made the communication power supply more reliable and stable, and electromagnetic compatibility. The system dynamic response and other performance indicators have also made great progress. The introduction of modern digital circuit also makes the power more intelligent, can control the output of power through the program, and monitor in real time. Aiming at the above problems, this paper takes the high performance output small RF remote module power supply system as the main research object, on the basis of in-depth analysis of the theory and technical principle of current switching power supply. A high power density power supply system for RF remote module is designed. The main content is: 1. The input and output performance requirements of the power supply system are confirmed. Considering the power demand, the operating environment and the reliability requirements, the power output is integrated according to the actual demand, and the specification for the design of the power supply system of the small radio-frequency remote module is developed. According to the power system design specification book, design the power system solution. Select small package power supply control chip, analyze and apply this kind of chip to design high performance output DC-DC power supply, the precision is less than 1%, ripple output 10mV is less than, reach the domestic advanced level. 3. The impulse current suppression circuit is studied and a novel switching mode impulse current suppression circuit is designed so that the small encapsulated power FET can cope with larger impulse current and thus reduce the size of the input stage of the power supply. The particularity of two-wire system is studied and a new type of forward circuit is designed. The power transformer is alternately demagnetized in two switching cycles by using the alternating output of the primary and secondary edges, which simplifies the circuit and improves the efficiency. I2C bus is studied to perfect the function design of power supply system, so that the output voltage of power can be adjusted by digital signal, the power supply channel can be switched by digital control and the output voltage of power supply can be monitored in real time. The peripheral test project of communication power supply is studied, and the test method is designed according to the particularity of small RF remote module. Analyze and verify the problems in the test, and finally provide the products that meet the performance and function requirements.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5;TN86
【参考文献】
相关期刊论文 前1条
1 梁海珊;抗电磁干扰(EMI)技术[J];杭州电子工业学院学报;2002年03期
，本文编号：2146724
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