The maximum distance between Electronics and Antenna is determined by two main factors – the coupling factor between Target & Antenna and the application’s electromagnetic environment or EMC requirements.
The greater the signal amplitudes in the Antenna’s Receive circuits and the more relaxed the EMC environment, the greater the permissible displacement between Electronics and Antenna.
The use of EMC shielded cable between Antenna and Electronics generally increases the maximum permissible distance. In consumer electronics applications a distance of 2m is achievable without the use of shielded cable between Electronics and Antenna.
Zettlex can advise on maximum distances given a particular sensor geometry, size and relevant EMC data.