Okay, after some reading... I think the antenna matching circuitry is only required if there's an impedance mismatch between the transmitter and antenna. The ESP's datasheet says its output impedance is 50 Ohms. The antenna I'd planned to use is the RainSun AN9520, the same ceramic chip antenna foun...

Oh, there sure is. I'm not sure how I missed that, thank you.

I guess I'll have to read up on antenna matching circuits.

That would be great!

In fact, yours is one of the blogs that shows the "minimal" design I mentioned, in your August 26th post.

If you do write such a design blog post, I'd definitely read it.

Hello, I'm interested in doing my own simple PCB layout with an ESP32-PICO-D4 onboard. Is there a reference schematic that notes recommended layout, supporting hardware, and so on? I know it's supposed to be basically a completely self-contained module, but even the "minimal" tiny design whose image...