ESP32-S antenna question

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ESP32-S antenna question

Postby kakopappa » Fri Sep 20, 2019 5:16 am


ESP32-S has a onboard PCB antenna and metal shield antenna. I it possible to use one antenna for WiFi and another antenna for Bluetooth? Reason is I am working on a BLE Scanner. It requires to scan all the BLE devices every second and upload to the server. Right now it lags when switching between a single antenna.


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Re: ESP32-S antenna question

Postby WiFive » Fri Sep 20, 2019 7:33 am

No. In fact only one antenna is actually connected to the chip.

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Re: ESP32-S antenna question

Postby ESP_Sprite » Mon Sep 23, 2019 4:25 am

Also, it's not only the antenna that is shared: inside the chip, a large part of WiFi and BT radios are also shared between protocols.

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Re: ESP32-S antenna question

Postby kmmaran » Sat Oct 05, 2019 10:26 am

This is my understanding of the chip, as I worked on similar chip from different manufacturer. The radio front-end inside the chip (PA, LNA, Mixer, Filters and etc) are shared between WiFi comm and BT Comm. Unless each has different line up for each comm protocol than two comm at same time is possible, this chip capable of one radio comm at a time.

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