EEVblog Electronics Community Forum
A Free & Open Forum For Electronics Enthusiasts & Professionals
Welcome,
Guest
. Please
login
or
register
.
Did you miss your
activation email
?
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
This topic
This board
Entire forum
Google
Bing
Home
Help
Search
About us
Links
Login
Register
EEVblog Electronics Community Forum
»
Electronics
»
Projects, Designs, and Technical Stuff
»
ESP32 RF antenna connctor & filter network values
« previous
next »
Print
Search
Pages: [
1
]
Go Down
Author
Topic: ESP32 RF antenna connctor & filter network values (Read 644 times)
0 Members and 1 Guest are viewing this topic.
suku
Contributor
Posts: 48
Country:
ESP32 RF antenna connctor & filter network values
«
on:
October 11, 2022, 01:04:22 pm »
Hi,
I am designing custom PCB with ESP32-S3 onboard and I wish to include RF connector for external antenna, similar to how it is done on esp32-s3-wroom-1u.
https://hu.mouser.com/ProductDetail/Espressif-Systems/ESP32-S3-WROOM-1U-N8R2?qs=Li%252BoUPsLEnvv7kyEkzf6%252Bw%3D%3D
My problem is that I could not find information about the required PI filter thet is iplemented in the RF transmission line of the wroom module. What are the Capacitor and Inductor values for this RF network?
I checked the Espressif design guied but it was not very helpful in regards to RF.
https://www.espressif.com/sites/default/files/documentation/esp32-s3_hardware_design_guidelines_en.pdf
If you guys have any tips it would be very helpful.
Thank you!
Logged
suku
Contributor
Posts: 48
Country:
Re: ESP32 RF antenna connctor & filter network values
«
Reply #1 on:
October 11, 2022, 01:10:36 pm »
I removed the shielding off of the wroom module, there is clearly and inductor and two capacitors present in the RF line, but I have no means of measuring their value...
Logged
Robotec
Contributor
Posts: 44
Country:
Re: ESP32 RF antenna connctor & filter network values
«
Reply #2 on:
October 11, 2022, 03:00:29 pm »
Values of the Pi filter are not shown because they are dependent of the PCB and (depending of the case) antenna, you have to calculate them, if you don't know how, you should be using the module instead.
Logged
suku
Contributor
Posts: 48
Country:
Re: ESP32 RF antenna connctor & filter network values
«
Reply #3 on:
October 13, 2022, 09:18:58 am »
Calculated the component values based on the 35+10j Ohm impedance of the LNA in of the ESP32 and the 50 ohm antenna connector but I wanted to compare the values with a reference design...
Any other ides?
Logged
Print
Search
Pages: [
1
]
Go Up
« previous
next »
Share me
Smf
EEVblog Electronics Community Forum
»
Electronics
»
Projects, Designs, and Technical Stuff
»
ESP32 RF antenna connctor & filter network values
There was an error while thanking
Thanking...
EEVblog Main Site
EEVblog on Youtube
EEVblog on Twitter
EEVblog on Facebook
EEVblog on Odysee