同轴开关在模数同播中的创新性应用  

Innovative Application of Coaxial Switch in Simulcasting of Analog and Digital

作　　者：陈小珊 Chen Xiaoshan(Hunan Broadcasting Media Co.,Ltd.,Golden Eagle Broadcasting System,Hunan 410000,China)

机构地区：[1]湖南广播影视集团湖南广播传媒有限公司,湖南410000

出　　处：《广播与电视技术》2023年第12期103-106,共4页Radio & TV Broadcast Engineering

摘　　要：本文创新性应用同轴开关,将数字新应用的调制信号巧妙地插入原多工系统的某一单频射频中,实现了安全的模数同播。在紧急情况下,可以灵活地进行应急切换。同时,将原模拟调频与数字新应用有机地隔离,互不干扰。这一应用创新点的代表意义强,因为它不局限于多工器的级数,可借鉴度高,因为调频或中波等无线发射都适用。它为调频的模数同播、无线发射的转型升级及创新性应用提供了一种全新的思路。This article innovatively applies coaxial switches to cleverly insert modulation signals from new digital applications into a single-frequency RF of the original multiplex system,achieving safe analog-to-digital simulcasting.In an emergency,emergency switching can be flexibly carried out.At the same time,the original analog frequency modulation is organically isolated from the new digital application,without interfering with each other.The representative significance of this innovative application is strong because it is not limited to the level of multiplexers and has a high reference value,as it applies to wireless transmissions such as frequency modulation or medium wave.It provides a new idea for the transformation,upgrading,and innovative application of analog-to-digital simulcasting and wireless transmission in frequency modulation.

关 键 词：模数同播 同轴开关 多工器 调频发射 

分 类 号：TN92[电子电信—通信与信息系统]