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IWR6843LEVM: About the PCB layer stack-up of IWR6843LEVM

Hui Chen
Intellectual 430 points
Part Number: IWR6843LEVM

Hi TI experts,

I recently studied the IWR6843LEVM, which is based on the low-cost FR4 on-board antenna. There is a question that needs your further confirmation.

from www.ti.com.cn/.../swrr179 PROC116A_ FabNotes. According to the information obtained in PDF document, the layer stack-up of PCB is shown in the below figure, the dielectric material between layer 1 and layer 2 is ISOLA FR408HR, and its Dk is 3.33.



Query the datasheet of FR408HR on the official website of ISOLA (the manual is attached), and its Dk value @ 60Ghz is not given.


fr408.pdf

Please help to confirm, Whether the data in the PROC116A_FabNotes.PDF document is real, because it seriously affects the antenna performance.

Thanks a lot.

11/06/22