地面数字电视广播发射机严格频谱模板测试分析  

Analysis on Strict Spectrum Template Test for Digital Terrestrial Television Broadcasting Transmitters

作　　者：康建华 马洪平 Kang Jianhua;Ma Hongping(Academy of Radio and Television Science,NRTA,Beijing 100866,China;Chengdu Chengguang Television Equipment Co.,Ltd.,Sichuan 610081,China)

机构地区：[1]国家广播电视总局广播电视科学研究院,北京100866 [2]成都成广电视设备有限公司,四川610081

出　　处：《广播与电视技术》2024年第5期71-75,共5页Radio & TV Broadcast Engineering

摘　　要：广电5G与地面数字电视36频道仅有1MHz频谱间隔,36频道的地面数字电视广播发射机需满足严格条件下的频谱模版要求。本文首先对影响频谱模版的要素进行了分析,其次提出了3种严格频谱模板的测试方法,最后对测试结果进行了比较分析,提出了测试建议。The China Broadcast Network’s 5G and the digital terrestrial television broadcasting transmitters on Channel 36 are separated by 1MHz spectrum interval.Under these conditions,the digital terrestrial television broadcasting transmitters for Channel 36 are required to comply with strict spectrum template standards.This paper begins by analyzing the elements that affect spectrum characteristics.Subsequently,it introduces three rigorous methods for testing the strict spectrum template.Finally,it compares and analyzes the test results,offering recommendations for the testing process.

关 键 词：地面数字电视广播发射机 严格频谱模板 激励器 滤波器 频谱分析仪 无杂散动态范围 显示平均噪声电平 

分 类 号：TN949.197[电子电信—信号与信息处理]