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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!

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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…

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0 Roger Clark over 7 years ago

AFIK, a quarter wave distance away from a short is open circuit, so its possible that this is correct.

However if the length is not quite a quarter wave, it will exhibit some lower impedance than a open circuit. Quiet what impedance is hard to calculate.

(Also the term "length" depends on a load of factors and not just the length of the track on the PCB)
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0 Roger Clark over 7 years ago

AFIK, a quarter wave distance away from a short is open circuit, so its possible that this is correct.

However if the length is not quite a quarter wave, it will exhibit some lower impedance than a open circuit. Quiet what impedance is hard to calculate.

(Also the term "length" depends on a load of factors and not just the length of the track on the PCB)
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