HMC1119 function discussion

Dear Sir,

We have a application of 2G ~6G attenuator.Currently,We found that HMC1119 can operate linearly when the total attenuation is below 70dB (40dB+30dB fixed attenuator connected in series) (use a network analyzer to detect S21) But above 70dB, HMC1119 cannot be linearly controlled (the logic gate switch 16dBm 2G~6G is not linearly added, especially the high frequency is more serious) Would you like to ask if there is a maximum attenuation limit for this IC?

Thanks!

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