ESP32 Forum

Posted: **Tue Feb 11, 2025 10:00 pm**

Hello there,
I am pretty new to pcb design and rf. I am designing a board with ESP32-C6 QFN40 package.I know that I need to match the impedance to 50 ohms but I can not find the impedance of PIN 1 (ANT) explicitly mentioned anywhere? This is my current board for reference, if you see any obvious mistakes.

Posted: **Wed Feb 12, 2025 12:31 pm**

Keep in mind that there should be no ground pour or traces under/near the antenna area.

Posted: **Mon Feb 17, 2025 9:13 pm**

Is D2 going to put 11V on the USB connector?

Posted: **Tue Feb 25, 2025 4:12 pm**

No it will be reverse biased if 12V is connected.

Posted: **Fri Nov 28, 2025 9:02 am**

Hi,
I have recently stumbled on the same mistery. But through analysis i determined the impedance is about 50 + j0 Ohms.
But I havent tested it yet, did you manage to solve your design in some way?

ESP32 Forum

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