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Advantages and Disadvantages of Active RFID Tags and Passive RFID Tags

April 2,2021.

1. Active RFID Tags

Active RFID tags are powered by a built-in battery, and different tags use different numbers and shapes of batteries.

Advantages: long working distance, the distance between the active RFID tag and the RFID reader can reach tens of meters, or even hundreds of meters.

Disadvantages: large size, high cost, use time is limited by battery life.

2. Passive RFID Tags

The passive RFID tag does not contain a battery, and its power is obtained from the RFID reader. When the passive RFID tag is close to the RFID reader, the antenna of the passive RFID tag converts the received electromagnetic wave energy into electric energy, activates the chip in the RFID tag, and sends the data in the RFID chip.

Advantages: small size, light weight, low cost, long life, and can be made into different shapes such as thin sheets or hanging buckles to be used in different environments.

Disadvantages: Since there is no internal power supply, the distance between the passive RFID tag and the RFID reader is limited, usually within a few meters, and a more powerful RFID reader is generally required.

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