The present invention determines the resonant frequency of a wireless sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with a low duty cycle, gated burst of RF...http://www.google.es/patents/US7710103?utm_source=gb-gplus-sharePatente US7710103 - Preventing false locks in a system that communicates with an implanted wireless sensor
Preventing false locks in a system that communicates with an implanted ...
