| 天线放电球放电对中波发射机末级的影响分析 |
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| 引用本文： | 陆国祥,陆建威,王桂华. 天线放电球放电对中波发射机末级的影响分析[J]. 电声技术, 2014, 38(9): 92-99 |
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| 作者姓名： | 陆国祥 陆建威 王桂华 |
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| 作者单位： | 中山广播电视台,广东 中山,528403 |
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| 摘 要： | 针对雷电容易通过天调网络和馈线造成中波发射机末级功放模块和供电模块损坏的存在问题,研究了放电球放电前后天调网络的不同表现特征和规律,阐明了放电球放电是导致发射机末级功放模块和供电模块损坏的主要原因,提出了通过降低ftx,f0前、f0后和f1等振荡频率、旁路f2输出、增加馈线终端移相网络支撑来提高中波发射机防雷可靠性的方法。实验表明,该方法能够有效提升天调网络的防雷可靠性。
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| 关 键 词： | 放电球放电影响 天调网络防雷 中波天线防雷 馈线输入阻抗 终端移相 |
Analysis of the Influence of Antenna Discharge Ball Discharge on the Medium Wave Transmitter |
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| LU Guoxiang,LU Jianwei,WANG Guihua. Analysis of the Influence of Antenna Discharge Ball Discharge on the Medium Wave Transmitter[J]. Audio Engineering, 2014, 38(9): 92-99 |
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| Authors: | LU Guoxiang LU Jianwei WANG Guihua |
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| Affiliation: | (Zhongshan Broadcasting ＆ Television Station,Zhongshan Guangdong 528403 ,China) |
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| Abstract: | Aim to cause network and feeder by day transfer medium wave transmitter final amplifier modules and power supply modules for lightning damage problems, different performance characteristics and laws of the discharge ball after days of discharge tune the network are studied to clarify the discharge ball discharge is the leading cause transmitter final ampli- fier module and power module damage, put forward by reducingftx ,f0 before and after f0 andf1 such as oscillation frequency, bypass f2 output, increased feeder terminal phase -shifting network support to improve AM methods transmitter Light- ning Protection reliability. Experimental results show that this method can effectively improve the reliability lightning protec- tion day tune network. |
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| Keywords: | discharge ball discharge affect day tune network anti medium wave antenna anti input impedance of the an-tenna feeder terminal phase |
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