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ESP32-C3 SuperMini antenna modification (peterneufeld.wordpress.com)
26 points by ta988 8 hours ago
1 comments

Antenna design is a dark art, I like simple hacks like this.

> The two parts of the antenna are intentionally designed to create an omnidirectional radiation pattern without a pronounced directionality.

I worked on a project a while back to try to utilize this to detect the arrival direction of WiFi signals approximately based on received strength. Do this for enough base stations and you have a very crude positioning system.

It also immediately invalidates FCC modular component compliance, and may be illegal if operating on dual-use bands like 5G wifi.

Remember the rules limits use the ERP, and EEs may have added a crappy antenna on purpose to meet the legal limits.

https://en.wikipedia.org/wiki/Effective_radiated_power

There are also medical radiofrequency exposure guidelines, and they mitigate deep tissue burns or "G5 Mind control beams" concerns. lol =3

https://www.canada.ca/en/health-canada/services/health-risks...

Exactly… they would have added crappy antenna as they likely meet emission, spurious or harmonics requirements..

Engineer might be messing with other 2.4GHz devices by doing this

You can just ignore the FCC.

They are completely toothless.

As an individual this is mostly true unless you're touching broadcasting proper. As a business this is absolutely not true and noncompliance is a ticking time bomb that will bankrupt you.