matching circuit for Johanson 2450AT07A0100 Chip antenna for nRF52840 for BLE

[Smitesh Dhanani]

HI,

I am designing a costume PCB of nRF52840-CKAA-R7. I used Johanson 2450AT07A0100 Chip antenna for BLE, please suggest the matching circuit for it.

Due to size concerns, I have selected the Johanson 2450AT07A0100 antenna, it can perform in practicality? 

[Kenneth]

Hi,

You should place the antenna according to manufacturer instructions. In addition we recommend placing a PI-network between our RF matching network and the antenna. This network will ensure the antenna can be tuned to the optimal performance, the actual components values (e.g. capacitors and inductors) in the PI-network must be found using a network analyzer. See page 13: https://infocenter.nordicsemi.com/pdf/nwp_017.pdf 

Best regards,
Kenneth