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LMX2582: 低频段谐波问题

Part Number: LMX2582

按照以下配置对2582做了配置,输出150MHz RF信号

输出端测得的结果如下:

150MHz 3次谐波很大,基波输出功率远不达规格书所示,4.8GHz频率处的功率远大于150MHz,请解答疑惑

下图是4800MHz频谱图