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Feed Line

Hi,
Please have a look and let me know about it.

This board is two layers and i used chip antenna. I would like to ask you, Is this design is correct? How can i plan with less antenna area?
I try YJ-18010-nrf52840 module and worked very well. I could communicate between two boards at 150 meters. I dont understand YJ-18010-nrf52840 module design, I saw an short feed line. Can you explain how it work?

YJ-18010-nrf52840 module link : http://www.holyiot.com/eacp_view.asp?id=278

Thanks for the reply in advance.

Parents
  • Hi,

     

    You are short one component in the RF matching network. You need to add C4

    You should also replicate the reference RF matching network PCB layout:

     

    Except for that you can move the other components around as you wish (within reason) to minimize the size of the design. The feed can be made much more straight, just re-organize the components a bit. If you are not able to fit a wide trace in this area it is not critical if it is not 50 ohms. E.g.

     

    Best regards,

    Andreas

Reply
  • Hi,

     

    You are short one component in the RF matching network. You need to add C4

    You should also replicate the reference RF matching network PCB layout:

     

    Except for that you can move the other components around as you wish (within reason) to minimize the size of the design. The feed can be made much more straight, just re-organize the components a bit. If you are not able to fit a wide trace in this area it is not critical if it is not 50 ohms. E.g.

     

    Best regards,

    Andreas

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