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I want to use adl 5801 for my downconverter mixer...I want to give 5.8 GHz rf port and get 400 Mhz from IF port      and when I simulate s parameter of ADL 5801 and perfectly matching(Impedance tuner)  RF ports with using awr microwave office I get worst result from awr and for 5.8 GHz...  how can I solve this problem or should I change  the component