摘要
针对我国广播电视网升级与改造,并根据变压器型定向耦合的原理,提出了一种利用四线变压器、传输线及电子元件构成分支器的方法,给出了设计原理,设计制作了一种阻抗为75Ω的无源超宽带同轴电缆二分支器,验证了方法的有效性。通过测试结果的分析和比较,分支器的带宽超宽且各项指标优于我国现行分支器标准GY/T 137-1999,同时课题实验为我国下一代广播电视网(NGB)实现高级同轴电缆网络技术(HiNOC)的两个关键部件制造探索了新的技术解决方案,填补了国内空白。
For the upgrading and improvement of China broadcast and television network, according to the principle of transformer type directional coupler, Put forward a method that the splitter is made of four line transformer, transmission line and electronic components, gives the design principle, devise a kind of 75Ωpassive ultra wideband coaxial cable two branch, Verify the effectiveness of the method, the bandwidth of the branch and the index are better than the standard GY/T 137-1999 of our country by analyzing and com-paring the test results.At the same time, the paper has explored the new technology solutions to the two key components of the HiNOC for NGB, filling in the gaps of China.
出处
《中国有线电视》
2016年第3期288-292,共5页
China Digital Cable TV
基金
江苏理工学院研究生科研创新计划项目(20820111415)
江苏省产学研联合创新资金--前瞻性联合研究项目(BY2014038-06)
关键词
超宽带
定向耦合器
分支器
同轴电缆
ultra wideband
directional coupler
splitter
coaxial cable