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Gain and return loss issue in ADL5324 default eval board

Hello ,

I have purchased a default eval board of ADL5324 as per below link and data given, this eval board works quite well in the 2.2 GHz to 2.3 GHz

But, data does not match with our purchased default eval board of ADL5324. please find attached file of measurement between 2.2 to 2.3 GHz

I have set VCC= 5 V. gain =11.87 dB, input return loss=4.42 dB and output return loss=6.74 dB  measured at 2250 MHz frequency.

Please provide guidance.