nRF52832 antenna files

[Lalit Kumar Baghel]

I am using Meander line inverted F antenna for beacon and development board based on nRF52832.

Is it okay to go with this antenna or shall i change this antenna.?

Where can i get the dxf files of antenna used in Nordic dev kits.?

[Andreas]

Hi,

 

The pi filter components must be determined through tuning the antenna, see this whitepaper: https://infocenter.nordicsemi.com/pdf/nwp_017.pdf?cp=16_14

As start values you can just DNP the shunt components and 0 Ohm the series component. The antenna will work to some degree, but not optimally until tuned.

 

As for the grounding you should replicate as close as possible to the reference you have used. For this antenna I believe it should just be connected to a solid ground plane.

 

Best regards,

Andreas

[Lalit Kumar Baghel]

Hi,

Ground plane for this antenna do have some specific ground plane dimensions or i just connect it simply to ground plane?

[Andreas]

Hi,

 

The part near the feed and the ground arm should be a flat continuation of the uppermost edge in your design:

Whether or not you decide to have the current edge (like the yellow line) or continue this edge straight down (like the red line) probably does not matter all that much. Up to you.

 

Best regards,

Andreas