A new analysis method and broad-band design of tap-offs for CATV/DBS systems
A new analysis method and broad-band design of tap-offs for CATV/DBS systems
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CATV/DBS系统分接点的一种新分析方法和宽带设计
DOI：
10.1109/30.826395
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
M. Takahashi
中科院分区：
文献类型：
--
作者：
D. Kim;J. Hwang;M. Takahashi
提出了一种新的有线电视(CATV)和卫星直播(DBS)系统的分接分析方法，并用4端口和3端口等效电路进行了研究。作为一种新的分析方法，介绍了对称耦合线定向耦合器的奇偶模理论，并将其应用于变压器型定向耦合器进行了分析。通过仿真与测量结果的对比，验证了所提出的分析方法的有效性。此外，采用所提出的理论将抽头从5 MHz展宽到2450 MHz。
A new analysis method of tap-off for CATV (cable television) and DBS (direct broadcasting satellite) system was proposed and investigated by using 4-port and 3-port equivalent circuits. As a new analysis method the even-odd-mode theory of a symmetrical coupled-line directional coupler was introduced, and then it was applied to transformer type directional coupler and analyzed. By comparing the results of simulation and measurement the validity of proposed analysis method was confirmed. Furthermore, the tap-off has been broadened from 5 MHz to 2450 MHz by adopting the proposed theory.