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传输线巴伦工程应用发热分析及解决方案研究

发表时间:2017-02-28  浏览量:1052  下载量:315
全部作者: 郑运峰
作者单位: 北京裕源大通科技股份有限公司
摘 要: 通过理论分析与实验验证阐述了工程应用大功率巴伦(Balun)在设备工作过程中热量耗散的现象与成因。根据理论分析如何有效降低Balun 的热耗散,并通过实验验证该方法的可行性。研究目的在于如何控制和降低因Balun 发热而带来的器件老化与损毁,最终导致整个产品性能下降和可靠性降低的问题。理论和实验证明,选用高磁导率、低电导率的铁氧体磁芯并配合适当降低信号线绕线匝数的方法可以有效控制大功率Balun 的工作温度。虽然降低绕线匝数增加了Balun 器件的插入损耗,但仍然可以使之在合理的温度范畴工作,保证了产品的可靠性。实验结果证明,改善后的大功率Balun 工作温度明显低于改善前的工作温度,从而在工程上解决了因Balun 在大功率场合工作急剧的升温带来产品工作可靠性变低和性能下降的问题。
关 键 词: 无线电技术;巴伦功率耗散;铁氧体磁芯;涡流,;磁通量
Title: Study on thermal analysis and investigation for transmission line Balun in project application
Author: ZHENG Yunfeng
Organization: Wellhead Stone Technology Co., Ltd.
Abstract: In this paper, based on the combination of theoretical analysis and experimental verification, the phenomena and causes of heat dissipation in the application of high-power Balun in the process of equipment operation are described. According to the theoretical analysis, how to effectively reduce the heat dissipation of Balun and the feasibility of the method are verified by theory and experiments. The purpose of this paper is to control and reduce the aging and damage of the device caused by heat, which finally lead to the decline of the whole product performance and reliability. It is proved by theory and experiments that the ferrite core with high permeability and low conductivity can be used to effectively control the operating temperature of the high-power Balun. Although the reduction of winding turns increases the insertion loss of Balun, it can still work in a reasonable temperature range, which guarantees the reliability of the product. Experimental results showed that the working temperature of high power improved Balun was significantly lower than that before. So this method solved the heat dissipation of Balun when working in high-power occasions and kept product in good reliability.
Key words: radio technology; Balun heat dissipation; ferrite core; eddy current; magnetic flux
发表期数: 2017年2月第4期
引用格式: 郑运峰. 传输线巴伦工程应用发热分析及解决方案研究[J]. 中国科技论文在线精品论文,2017,10(4):434-441.
 
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