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IWR1843AOP: FCC Issues

Part Number: IWR1843AOP
Other Parts Discussed in Thread: AWR1843

Tool/software:

I have completed a product printed circuit board and currently testing to meet FCC.    There is a spurious emission at 28.8GHz that is 2.5dB above threshold.    I have changed RTRIM to 6 per other comments in this forum.    It only slightly reduced the emission by 1 dB on one unit and 0.25 dB on a second sample.   The FCC guide published by TI states that the RTRIM and 28.8GHz spur is only with the non-AOP.    Please help provide a solution to try to reduce the 28.8GHz emission.