Hi,
i am evaluating the use of the nRF51822-QFxx for our product and made good experience with the nRF51-DK. Now, i would like to layout the custom pcb and i am not sure how to design the antenna. Due to space issues, i would like to use a meandered antenna as it is used with nRF51-Dongle (PCA10031).
I am using Eagle, so i could not see the exact measurements of the reference designs but i saw the schematics and pcbs in the pdfs (i took a look on PCA10031, the nRF51x22 Reference Designs and the nRF51-DK). I am not quite sure about the width and pacement of the meandered antenna (used 0.254mm) and the placement of the shunt capacitor (C15) in respect to the matching network of the chip. Where should i place the shunt capacitor (C15)? Or is a pi-network nessecary as used on the dongle?
Our production does not allow to go in a 90 degree angle on IC Pins. So, is it ok as I did it with Pins 35 and 36 (in regard of the matching Network)?
Please see the pdf attached.
Thank you very much in advance and Kind regards.nRF51.pdf
DanKa
