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AWR1642BOOST: Nearfield phase error data calculation

Part Number: AWR1642BOOST

Hi:

My problem is about how to calculate phase error of table shown in Nearfield problem description in the doxygen of Millimeter Wave (mmw) Demo for XWR16XX.

The table shows the values of phase error due to nearfield at various distances. For example, at 5cm , 177.8 deg of phase error is anticipated.
But I can't obtain this value (177.8 deg) under the same assumption that distance = 5cm, wavelength = 0.375cm (80GHz) and theta = 0 deg. 

Could someone help me? thank you!