中波多频共塔天线阻抗预调统筹与网络带宽改善  

Coordination of Impedance Pre-adjustment and Improvement of Network Bandwidth for Medium-wave Multi-frequency Common tower Antennas

作　　者：卢光辉 郭炜 LU Guanghui;GUO Wei(Henan Radio and Television Station Xinyang Medium Wave Relay Station,Xinyang 464000,China)

机构地区：[1]河南广播电视台信阳中波转播台,河南信阳464000

出　　处：《中国有线电视》2022年第5期58-61,共4页China Digital Cable TV

摘　　要：为节省土地资源,在中波10 kW功率及以下等级的发射覆盖规划设计中,往往采用双频或3频共塔的方案设计。由于中波发射天线种类较多,其在中波频段呈现的频率阻抗特性也不同,在设计规划中波多频共塔频率时需统筹兼顾。针对76 m锥面顶负荷自立塔式宽频带中波发射天线的中波频阻特性,着重分析中波多频共塔频率的阻抗预调平衡,以及改善网络传输带宽所采取的技术措施,以期为同类规划设计提供借鉴。In order to save land resources,in the planning and design of transmission coverage with medium wave power of 10 kW and below,the scheme design of dual-frequency or 3-frequency common towers is often adopted.Since there are many types of medium-waves transmitting antennas,their frequency impedance characteristics in the medium-wave frequency band are also different.In the design and planning of the medium-wave multi-frequency common tower frequency,overall consideration should be given.Aiming at the medium-wave frequency resistance characteristics of the 76 m cone-top load self-supporting tower broadband medium-wave transmitting antenna,the impedance pre-adjustment balance of the medium-wave multi-frequency common tower frequency and the technical measures taken to improve the network transmission bandwidth are emphatically analyzed.Similar planning and design provide reference.

关 键 词：中波共塔 天线频阻 天调网络 

分 类 号：TN822.2[电子电信—信息与通信工程] TN931