ESP32-C6 RF pin output impedance

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kefecik
Posts: 2
Joined: Mon Feb 10, 2025 5:35 pm

ESP32-C6 RF pin output impedance

Postby kefecik » 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. Image
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ahsrabrifat
Posts: 201
Joined: Sat Jan 18, 2025 2:31 pm

Re: ESP32-C6 RF pin output impedance

Postby ahsrabrifat » Wed Feb 12, 2025 12:31 pm

Keep in mind that there should be no ground pour or traces under/near the antenna area.
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Bryght-Richard
Posts: 98
Joined: Thu Feb 22, 2024 3:59 pm

Re: ESP32-C6 RF pin output impedance

Postby Bryght-Richard » Mon Feb 17, 2025 9:13 pm

Is D2 going to put 11V on the USB connector?
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kefecik
Posts: 2
Joined: Mon Feb 10, 2025 5:35 pm

Re: ESP32-C6 RF pin output impedance

Postby kefecik » Tue Feb 25, 2025 4:12 pm

No it will be reverse biased if 12V is connected.
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onhai666
Posts: 1
Joined: Fri Nov 28, 2025 7:41 am

Re: ESP32-C6 RF pin output impedance

Postby onhai666 » 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?
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