90.470

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90.470 is an acronym that stands for Radio Frequency Identification (RFID) systems. This type of system is used in a variety of applications, from controlling access to secure facilities to tracking personal medical records. Other applications include tracking livestock, confirming identity for card purchases, and tracking objects in a retail environment. RFID systems are now used in many areas, but the most common uses are access control and contactless identification.

In general, an RFID system includes two main components: a reader and a tag. The reader, which is the main component of the system, is a device that emits electromagnetic signals to read and write data from tags. The tag, which is an integrated circuit attached to an antenna, responds by emitting a signal that can be read by the reader. The data transmitted from the tag to the reader is then processed and used by the system.

RFID systems work by transferring data between a reader and a tag through radio waves. Radio wave communication between the reader and the tag can be either passive or active. Passive tags are triggered by the reader’s electromagnetic field and use the energy from the reader for transmission, while active tags have an internal battery that transmits data to the reader. Depending on the application, there are several different types of RFID tags available, including low-frequency (LF) tags, high-frequency (HF) tags, ultra-high frequency (UHF) tags, and microwave tags.

RFID systems can be divided into two categories, long-range and short-range. The maximum range of long-range systems is greater than 10 meters, while short-range systems typically have a range of 1 to 5 meters. Long-range systems usually require more power than short-range systems do. Long-range systems also tend to be more expensive and may require more complex reader designs.

RFID systems have a range of applications, from access control to inventory tracking. They can be used in hospitals to monitor patient records, in secure facilities to control access, in retail stores to track products, and in warehouses to manage inventory levels. RFID systems are also used for contactless identification, such as for identification cards or passports. Additionally, they can be used in animal husbandry, to track livestock or other animals, and in automotive applications, to identify vehicles or identify locations.

In summary, RFID systems are used for a variety of applications in many different industries. They allow users to transfer data wirelessly between a reader and a tag, and can be used for contactless identification, access control, inventory tracking, and more. The main components of RFID systems are the reader and the tag, and they can be divided into long-range and short-range systems depending on the application.

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