Question about RFID.
Hi alanphydenics, thanks a lot.
My colleague has such an idea: design a transponder that is powered by the radio signal sent from the reader, the transponder, which is implanted inside an animal body, has a simple sensor monitoring something, temperature for example, it sends back the sensing data to the reader whenever the reader comes close.
So can the transponder get enough power supply for the sensing circuit, and the trnasmiter that sends back the data? Is there any product doing similar job in the market? If power is not an issue, then which frequcny is suitable for this application? If the frequency is low, the antenna is large thus not possible to implant into a body. If the frequency is high (GHz), then the absorption by the body is high, and the transmitter's power should be high. So, is this idea possible?