基于并联加载技术的中波三频共塔天调网络性能优化问题  

Performance Optimization of Medium Wave Three Frequencys Common Tower Tunneling Network Based on Parallel Loading Technology

作　　者：娅丽 桑旦次仁 YA Li;SANGDAN Ciren(Chaya Medium Wave Broadcasting Station of Tibet Broadcasting System,Changdu 854300,China)

机构地区：[1]西藏广播电视台察雅中波转播台,西藏昌都854300

出　　处：《电声技术》2024年第3期138-140,共3页Audio Engineering

摘　　要：对于中波三频共塔而言,天调网络在603 kHz频点处的Q值会显著上升,进而引起网络带宽极速降低,直接影响网络运行的安全性。深入研究了中波三频共塔的技术特点和天调网络的运行机理,利用并联加载技术改造铁塔,通过提高发射天线输入阻抗降低603 kHz工作频点处的Q值,可有效提升天调网络运行的安全性和可靠性。For the medium wave three frequency common tower,the Q value of the sky modulation network will significantly increase at the frequency point of 603 kHz,which will cause a rapid decrease in network bandwidth and directly affect the security of network operation.In depth research has been conducted on the technical characteristics of the medium wave three frequency common tower and the operating mechanism of the sky modulation network.By using parallel loading technology to transform the iron tower,the Q value at the working frequency point of 603 kHz can be reduced by increasing the input impedance of the transmitting antenna,which can effectively improve the safety and reliability of the sky modulation network operation.

关 键 词：并联加载 天调网络 三频共塔 输入阻抗 中波发射机 

分 类 号：TN934.81[电子电信—信号与信息处理]