搜索 - 科创网

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内容：研制一台专用通信机，发射频率70M，2000-2100M。,为评估芯片射频指标是否符合要求，采用USRP B210发射信号，输入到CMU200进行频谱测量。,测试条件同2，频谱仪Span改为120MHz，观察发射频点附近的杂散、可见中心频率附近没有明显的杂散信号。,发射频率设定2025M，I通道传入固定数值1.0，Q通道传入固定数值0，频谱仪测量相位噪声。

内容：天线覆盖了手机通信、UWB定位模块和Wifi等射频单元常用频率。,R101C性能稳定，产品一致性高，是射频工作者必不可少的实验工具。,回波损耗：10dBR101C天线输入阻抗50欧，在频率范围内在10dB以下波动，对应驻波比约小于2.0功率容量：5瓦当使用R101C天线作为发射天线时，我们建议射频输入功率不要大于5W。

内容：2.定向桥测阻抗似乎是50Ω附近比较准，离得越远误差越大，好像从几Ω到1k多还行，范围更大又要求精度就需要射频电流、电压一起测了，不知道将来901s有无可能改进（增加）RF-IV功能，变身成LRC+射频阻抗分析仪

约找到 1041 条结果，耗时 0.209 秒

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注意事项：

当前账号的附件下载数量限制如下：