【应用】适合用于5G功放中的宽频带固定衰减器，覆盖了所有5G的Sub-6频段，工作温度可达125℃

时间： 2021-04-01 来源：世强

技术问答

工作在N78频段的某功放取样电路中需要一颗高频固定衰减器，将从功放电路取样的射频信号衰减到一定范围，不损害后面的器件。要求能承受40dBm的峰值信号，衰减值为20dB，阻抗为50欧姆。推荐SMITH公司的TS03系列衰减器，阻抗都是50欧姆，最大平均功率为2W，覆盖频率为DC-12.4GHz，包括了所有5G的Sub-6频段。工作温度甚至能到125度，性能非常稳定，适合用在工业、通信等领域。大小也只有3.1*3.68mm。

20dB衰减值对应的具体型号为TS0320F，如果信号为10μs脉冲宽度占空比1%，则可以承受46dBm以上的峰值功率，远超过40dBm的峰值功率。

综上，可以看出SMITH公司的TS03系列宽频带固定衰减器TS0320F很适合用在5G功放中。

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