What is RFID?

RFID (Radio Frequency Identification) is a technology that uses radio waves to capture and exchange digital information stored in RFID tags or smart labels through RFID readers.

An RFID tag usually consists of a microchip attached to an antenna on a substrate. The chip stores electronic information, while the antenna enables communication between the tag and the reader.

RFID technology is widely used to automatically identify and track objects. It helps businesses improve data accuracy, reduce manual operations, and increase efficiency through faster and more reliable data collection.

From access cards and inventory management to supply chain tracking and industrial applications, RFID technology has already become part of many everyday and business processes.

How RFID technology works?

RFID system uses tags, or labels attached to the objects to be identified. For RFID Applications and Solutions, the RFID hardware system includes three parts, tag, antenna and reader. The reader with antenna send a signal to the tag and read its response.

RFID tags can be either passive, active or battery-assisted passive.Tags may either be read-only, having a factory-assigned serial number that is used as a key into a database, or may be read/write, where object-specific data can be written into the tag by the system user.  RFID tags contain at least three parts: an integrated circuit that stores and processes information and that modulates and demodulates radio-frequency (RF) signals; a means of collecting DC power from the incident reader signal; and an antenna for receiving and transmitting the signal. The tag information is stored in a non-volatile memory. The RFID tag includes either fixed or programmable logic for processing the transmission and sensor data, respectively.

An RFID reader transmits an encoded radio signal to interrogate the tag. The RFID tag receives the message and then responds with its identification and other information. This may be only a unique tag serial number, or may be product-related information such as a stock number, lot or batch number, production date, or other specific information. Since tags have individual serial numbers, the RFID system design can discriminate among several tags that might be within the range of the RFID reader and read them simultaneously.

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RFID Tag

Stores
Data

RF Signal

RFID Antenna

Transmit &
Receive

━━━━
RF Cable

RFID Reader

Processes
Data

Software System

Data
Management

RFID Frequency Bands and Standards

RFID technology operates at different frequency bands, each with different communication characteristics, standards, and application scenarios.

Band

Regulations

Range

Data speed

ISO/IEC 18000section

Remarks

120–150 kHz (LF)

Unregulated

10 cm

Low

Part 2

Animal identification, factory data collection

13.56 MHz (HF)

ISM bandworldwide

10 cm–1 m

Low to moderate

Part 3

Smart cards (ISO/IEC 15693, ISO/IEC 14443 A, B). 

ISO-non-compliant memory cards (Mifare Classic, 

iCLASS, Legic, Felica …). ISO-compatible microprocessor 

cards (Desfire EV1, Seos)

433 MHz (UHF)

Short range devices

1–100 m

Moderate

Part 7

Defense applications, with active tags

865–868 MHz (Europe)
902–928 MHz (North America) UHF

ISM band

1–12 m

Moderate to high

Part 6

EAN, various standards; used by railroads

2450–5800 MHz (microwave)

ISM band

1–2 m

High

Part 4

802.11 WLAN, Bluetooth standards

3.1–10 GHz (microwave)

Ultra wide band

Up to 200 m

High

Not defined

Requires semi-active or active tags

RFID Applications

RFID technology is used in many industries and variety of RFID Applications and Solutions.

Inventory management or Warehouse management

RFID improves inventory visibility and warehouse efficiency by enabling automatic identification of products, cartons, and pallets.

RFID tags attached to items are captured by readers during storage, picking, and shipping processes. The collected data helps reduce manual errors, improve inventory accuracy, and optimize warehouse operations.

Logistics and Supply Chain management

RFID helps companies track goods throughout transportation and supply chain processes with improved visibility and accuracy.

RFID tags attached to packages, containers, or pallets are read at different checkpoints. The collected information enables real-time tracking, reduces product loss, and improves supply chain efficiency.

ETC (Electronic toll collection)

ETC uses RFID technology to enable automatic vehicle identification and electronic toll payment without stopping at toll gates.

An RFID tag installed on the vehicle windshield is read by roadside RFID readers when passing through toll stations. This improves traffic efficiency, reduces waiting time, and supports intelligent transportation systems.

Animals and Farming

RFID is used in livestock management to provide accurate animal identification and improve farming efficiency.

RFID tags attached to animals are read by RFID readers during feeding, breeding, and health monitoring processes. This helps farmers maintain better records and reduce manual management work.

Jewellery Management

RFID solutions help jewellery businesses improve inventory management and protect valuable products.

Small RFID tags attached to jewellery items allow automatic identification during storage, display, and sales processes. This improves inventory accuracy, reduces manual checking, and enhances asset management.

Healthcare and Medical

RFID technology supports healthcare operations by improving the tracking of medical equipment, supplies, and patient information.

RFID tags attached to medical assets or identification cards are collected by readers, allowing hospitals to manage resources more efficiently, reduce search time, and improve data accuracy.

Leisure and Sports

RFID is widely used in sports events and leisure facilities for access control, ticketing, and participant tracking.

RFID tags embedded in wristbands, cards, or tickets are identified by readers at entrances and activity areas. This enables faster access, improved security, and better user experiences.

Airlines and Airports

RFID helps airlines improve baggage tracking and reduce handling errors during airport operations.

RFID tags attached to luggage are automatically identified by readers at different checkpoints. The system provides better baggage visibility, improves sorting accuracy, and helps deliver more reliable passenger services.

How RFID Technology Improves Business Efficiency

Before RFID


Manual inventory checks and time-consuming counting


High handling costs and labor requirements   


Limited supply chain visibility


Inaccurate inventory data and stock shortages  Better accuracy 


Low warehouse productivity


Difficulty preventing counterfeit products 


 After RFID


Automated identification improves inventory efficiency


RFID reduces manual operations and lowers management cost


Real-time data improves tracking and supply chain flexibility


improves inventory control and turnover


Faster identification improves distribution efficiency


Unique RFID identification improves product security


 

About Airplux RFID Antenna
Solutions

Airplux Technologies specializes in RFID antenna design and manufacturing, providing reliable RFID antenna solutions for various identification and tracking applications.

With professional antenna design capabilities and manufacturing experience, Airplux offers a wide range of RFID antennas, including UHF RFID antennas, near-field RFID antennas, ceramic RFID antennas, narrow beam antennas, and integrated RFID antenna solutions.

Our RFID antennas are designed to deliver stable signal performance, accurate tag reading, and reliable operation in different RFID environments. By supporting both standard products and customized antenna solutions, Airplux helps system integrators, enterprises, and manufacturers develop efficient RFID systems for inventory management, access control, logistics tracking, asset management, and other applications.

Ready to Find the Right Antenna Solution?

Airplux provides customized antenna solutions for different applications and project requirements. Contact our antenna experts to discuss your next project.

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