Hello microwave guys, On the evaluation board (IE the one for the mixer HMC292LC3B) the geometrie of the coplanar line does not give 50ohm but more in the 90 to 100ohm. Does a narrow track was selected to physically better match the IC pin width ?
I did a simple line calc using ADS for the mid portion of the trace and I get 60 ohms. Did you use the dielectric constant and tanD values for Arlon 25 FR? Also the values specified in the drawing are in inches.
I attached the eval board drawing as well.
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