The correct answer is: C. Battery-assisted passive RFID
Passive RFID tags do not have their own power source and rely on the energy from the reader’s interrogating signal to power the tag’s microchip and transmit its data. Active RFID tags, on the other hand, have their own power source, which allows them to transmit their data at a much higher power level than passive RFID tags. Battery-assisted passive RFID tags are a hybrid of passive and active RFID tags. They have a small battery that powers the tag’s microchip, but they still rely on the energy from the reader’s interrogating signal to transmit their data. The battery is used to wake up the tag’s microchip and to power it during the short period of time that it is transmitting its data.
Here is a brief explanation of each option:
- Active RFID tags have their own power source, which allows them to transmit their data at a much higher power level than passive RFID tags. Active RFID tags are typically used in applications where long read ranges are required, such as asset tracking and supply chain management.
- Passive RFID tags do not have their own power source and rely on the energy from the reader’s interrogating signal to power the tag’s microchip and transmit its data. Passive RFID tags are typically used in applications where read ranges are shorter, such as access control and inventory management.
- Battery-assisted passive RFID tags are a hybrid of passive and active RFID tags. They have a small battery that powers the tag’s microchip, but they still rely on the energy from the reader’s interrogating signal to transmit their data. The battery is used to wake up the tag’s microchip and to power it during the short period of time that it is transmitting its data. Battery-assisted passive RFID tags are typically used in applications where read ranges are longer than passive RFID tags can achieve, but shorter than active RFID tags are required.