A transmission/reception radio-wave aerial for an interrogation device for electronic
labels carried by objects, the transmission/reception radio-wave aerial being tuned
to an F0 frequency and each electronic label including a radio-wave aerial
tuned to the F0 frequency and being associated with an electronic circuit,
wherein the transmission/reception radio-wave aerial is arranged to create a magnetic
field which modifies the tuning frequency for the radio-wave aerials for the electronic
labels in such a way to retune towards the F0 frequency of the aerial of
the interrogation device.
