I would like to transmit data at 125 kHz frequency. I'm wondering what is the realistical transmission distance that can be achieved with this antenna:
It's a rectangle shaped 9x12cm coil antenna.
Transmitter frequency: 125kHz
Inductance: 1.04mH
Resistance: 15ohms
(https://www.electrokit.com/en/product/rfid-antenna-9x12cm-125khz/)
In the description it says 'long-range'. I understand that LF transmissions usually take place in centimeter/millimeter measured distances, so I'm not sure what is meant by 'long-range'.
I'll be using Arduino to drive the antenna for now, and I'm wondering how far I can transmit signal/data and what can be done to increase the LF transmission distance?
I’m looking to transmit at about 1 meter range*
Best Answer
It's a 125 kHz transmit loop antenna for RFID applications which would need a typical range of around 100 mm that could go up to 300 mm or even 2000 mm in industrial applications.
When used for other applications, the range would depend on the transmitter output power and on how well the antenna could be matched to the transmitter output.
The maximum signal would be in the 'end on' directions of the loop.