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Ground plane layers for M20057-1
Hi, I have a 4 layer PCB with M20057-1 placed on one edge. According to the datasheet the ideal stackup uses the top and bottom layers as ground planes. However given that I have components on the top layer of the board, is it better for me to use the inner L2 as a solid ground plane? Does a single GND Layer suffice?

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Hi,

Using the inner L2 as ground plane is fine but make sure it is solid ground plane and has vias stitching the ground together especially the area around the M20057-1.
Best regards,
Yu Kai Yeung

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Yu Kai Yeung

Antenna Engineer at Antenova Yu Kai is an antenna expert with over 10 years of experience in the design and testing of antennas. He has experience helping customers with certification testing, combined with his knowledge of RF measurement procedures.

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Senior Antenna Engineer at Antenova Raymond has a wealth of experience in RF and antennas across many industry sectors. He has over 20 years of experience in electronics design and manufacturing.

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