I am trying to build an extension cable to relay an RFID signal (125kHz) to various distances (2,5,10m). I am using 2 identical antennas at the two ends of a 75ohm coax cable, and I also put 2 identical baluns between the antennas and the cable ends. By using HackRF coupled with HamItUp, I was able to verify that the signal from the rfid emitter does seem to reach the end of the cable with seemingly identical waveform and amplitudes; however, when the passive element of the RFID is put in the proximity of the antenna (<2cm), it is not recognized.
Do I need an amplifier, even if the signal seems to be relayed with virtually no loss? If so, what kind would be most appropriate for my need?
Thanks!
Do I need an amplifier, even if the signal seems to be relayed with virtually no loss? If so, what kind would be most appropriate for my need?
Thanks!