Design Review of NRF51822-QFAA board

[tamojit]

Hello,

Greetings from India!

I would like to have my design review by your engineers or any concerned person in the related field. The design is not yet complete but the reference layout is taken from here.
I am using inverted F antenna with default passive pi-network as given in the reference layout.

I have attached the gerbers below at your perusal for review.

Please provide me with the detailed analysis as I am a beginner in the RF world. Also I do not have any spectrum analyzer to carry out any necessary testing. If possible please provide me with a correct design(preferred in EagleCAD) .

Below is the snapshot of the board designed in Eagle.

Hoping to hear from you soon.

Tracker.zip

[Andreas]

Hi,

 

Both antennas are fine, just make sure you add a couple of mm to the length as it is easier to make is shorter (cut) than make it longer (copper tape). It is hard to say which one is better, both should be very good and there should be little difference between them. If you need to know which gives 2% more range than the other, you will have to make one board with each, and compare them. I suspect the reason why you can not find any post regarding successful use of the IFA is that most people make a post when there is an issue, not when everything is working as it should.

 

Best regards,

Andreas