This post is older than 2 years and might not be relevant anymore
More Info: Consider searching for newer posts

Can this Antena cause the nRF51 chips to burn?

Hi, I have used this antenna for my nRF51 layout, but it seems that the device is using very high currents! like in order of 200mA, I just wanted to know if this is because the antenna is a short circuit at DC or I have done something else wrong!

image description

Top Replies

peterz over 7 years ago +1

(not knowing how an F-Antenna is supposed to work...) if you can afford to sacrifice a PCB: remove the antenna with a cutter and solder a coaxial cable with a known, good antenna. Is the power consumption…
Roger Clark over 7 years ago in reply to myjtag +1

Any reason you didnt just use the Nordic reference design ? Antenna design is non trivial, and at these frequencies, tiny differences in track width or length or spacing make a big difference to the…

Parents

0 myjtag over 7 years ago

Thanks, I have used the TI app note for their 2.4GHz antenna, also I have seen this design on a kick starter campaign containing the nRF51 parts, so I just give it a go! the design is an F inverted antenna and the feed line of antenna comes from C8 and since antenna has two ends, one of them should be grounded.

The TI app note is this swru120b
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel
0 bjorn-spockeli over 7 years ago in reply to myjtag

I agree with @rogerclark, the inverted F antenna is harder to get right compared to the simpler quarter length antenna used on our nRF 5x DKs.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel

Reply

0 bjorn-spockeli over 7 years ago in reply to myjtag

I agree with @rogerclark, the inverted F antenna is harder to get right compared to the simpler quarter length antenna used on our nRF 5x DKs.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel

Children

No Data