Signal disturbance of ESP32-S3 module with pcb wifi antenna underneath a metal plate

Baldhead
Posts: 465
Joined: Sun Mar 31, 2019 5:16 am

Signal disturbance of ESP32-S3 module with pcb wifi antenna underneath a metal plate

Postby Baldhead » Tue Apr 16, 2024 9:30 pm

Hi,

I would like to know if a lcd with back metal plate will decrease the wifi signal of an esp32-s3 module.

I think so, but it doesn't hurt to ask.

In annex follow a side cut image what I want to do.

Thank's.
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ESP_Sprite
Posts: 9709
Joined: Thu Nov 26, 2015 4:08 am

Re: Signal disturbance of ESP32-S3 module with pcb wifi antenna underneath a metal plate

Postby ESP_Sprite » Wed Apr 17, 2024 2:04 am

That will likely negatively affect antenna performance, yes. Sorry, I don't know too much about RF magic to give an indication of how much. Another thing you may want to watch out for that I've had issues with in the past: if you manage to detune your antenna by a lot, you can get issues on WiFi initing where the calibration suddenly requires a lot more power causing a brownout.

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