NRF52832 - Monopole Antenna on 24mm Dia PCB

[Bhaskar]

Hi,

I need to design a small nRF52 board On 24mm Dia 2-layer PCB, same like nRF51822 Bluetooth Smart Beacon Kit (nRF51822 Coin-Cell design). Please find the attached Schematics and layout files for your reference.

For mono-pole antenna,Layout Reference taken from nRF51822 Coin-Cell design, and rest from the nRf52 DK ref design especially in the case of the antenna matching circuitry (components between device pin ANT and the antenna).

I am looking for a range of around 40-50 meters. Please review and let me know any suggestions to achieve best performance of the antenna. Thank you very much for your time and if you need any more information, I will gladly supply it..

NRF52832 Schematics.pdf

Gerber.zip

NRF52832-ERAATA-138.png

[Bhaskar]

Thank you very much and very happy for your immediate support.. Could please confirm the length of the mono-pole antenna designed on nRF51822 Bluetooth Smart Beacon Kit (nRF51822 Coin-Cell design)...

[bjorn-spockeli]

Confirm the length of the antenna? I cant see that you have updated the layout in the attached gerber files`.

[Bhaskar]

I mean,what is the length of your reference design nRF51822 Bluetooth Smart Beacon Kit (nRF51822 Coin-Cell design) antenna length...

[bjorn-spockeli]

The antenna on the nRF51 Beacon Kit is about 22.5mm. However, you should add 1-2mm to your prototype since you will have to tune the antenna by adjusting the length, i.e cutting away at the end of the antenna trace with a scalpel.