Radio Frequency Identification, is a technology that uses radio waves to identify and track objects. There are two main types of RFID systems: passive and active.
Passive RFID systems do not have their own power source. Instead, they rely on the power emitted by the RFID reader to power the RFID tag and transmit data. Because they don’t have their own power source, passive RFID tags are typically smaller and less expensive than active RFID tags.
Active RFID systems, on the other hand, have their own power source, usually a battery. This allows them to transmit data over longer distances and for longer periods of time than passive RFID tags. Active RFID tags are typically larger and more expensive than passive RFID tags.
What is Passive RFID?
Passive RFID (Radio Frequency Identification) is a type of RFID technology that uses electromagnetic fields to automatically identify and track tags attached to objects. These tags are typically made up of a small chip and antenna, and do not have their own power source.
Instead, they rely on the electromagnetic energy transmitted from a nearby RFID reader to power their circuits and transmit their data. This means that passive RFID tags are typically smaller and cheaper than active RFID tags, which have their own power source and can transmit data over longer distances.
What is Active RFID?
Active RFID (Radio Frequency Identification) is a type of RFID technology that uses electromagnetic fields to automatically identify and track tags attached to objects. Unlike passive RFID tags, active RFID tags have their own power source, typically a battery, which allows them to transmit data over longer distances and for longer periods of time.
This makes active RFID tags more versatile and capable of supporting a wider range of applications, such as tracking the movement of goods in a supply chain or monitoring the location of assets in a large facility. However, because they have a built-in power source, active RFID tags are also larger and more expensive than passive RFID tags.
Difference between Passive RFID and Active RFID
Here are the main differences between passive and active RFID:
- Active RFID tags have a battery and can transmit data over longer distances, while passive RFID tags do not have a battery and must be within the line of sight of the reader to be read.
- Active RFID tags are typically larger and more expensive than passive RFID tags.
- Active RFID systems can track objects that are moving or located in remote areas, while passive RFID systems are better suited for tracking stationary objects that are within range of the reader.
- Passive RFID tags are typically smaller and cheaper than active RFID tags, making them more widely used in applications such as access control and asset tracking.
- The range of an active RFID system is limited by the battery life of the tags, while the range of a passive RFID system is limited by the power of the reader.
