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Image frequency of adrv9009

Category: Hardware
Product Number: adrv9009

hello 

i use adrv9009-zu11eg evaluation board. 

For example , when I generate 650MHz using standard signal rf generator and set lo freq 200 MHz , I can measure 250 MHz.

In this case, I think I must measure only noise.

I think 250 MHz = (650 - lo * 3) + lo.

if my idea isn't wrong, what is the method to remove it?

help me