pi (or T) match network tuning

[waveson]

Now we have a new project,in order to long distance communication,we add a PA RFX2411N in our design,now how may I tuning the pi (or T) match network between nRF52 chip and the PA RFX2411N?

The following is our schemtic.we have VNA and Spectrum Analyzer.

[Marjeris Romero]

Hi,

Sorry for the late reply. Looking at the RFX2411N datasheet I see that it has 50 ohms input/output matching. What you should do is to copy the matching components for the radio recommended on the nRF52832 reference schematic, which will match the nRF52832 output to 50 ohms as well. Then you can see if it's necessary to adjust the component values so the output power will be 0dBm when using the 0dBm setting in the nRF52.

If you haven't produce your PCB you should remove the L40 component, and use values from the reference design for both C40 and L41 and follow the PCB layout reference design closely which you can download from the nRF52832 product page: https://www.nordicsemi.com/Products/Low-power-short-range-wireless/nRF52832

You can send both layout and schematic files to us for review as well.

Best regards,

Marjeris

[waveson]

Thank you for your reply，now we use nRF52810 and RFX2402E to design，my file format is PADS Vx.2.3，can you open it ?

[Marjeris Romero]

Hi,

If you want to sendt he files for review I would prefer to have the schematic files sent in pdf format, and the layout files sent in gerber format, as I don't have experience with PADS software.

You didn't attach any file now as far as I can see? You can use the menu option "Insert" > "Insert image/video/file" to attach your files to this ticket. If you prefer you can also open a private ticket instead so you don't share your files in public.

[waveson]

Hi,I wanna send the file to your private E-mail,could you share it to me?

[Marjeris Romero]

Hi,

I can only provide assistance through Devzone. To open a private ticket please click on the "Support+" button besides the searching bar on the top of the website. Then click the "PRIVATE Tech Support" option when creating the ticket.

Best regards,

Marjeris