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RFID Singapore - What Is RFID?
What is RFID?


Radio Frequency (RF) technology has been around since WWII, when the Allied Forces first used it to identify friendly aircraft. Today this technology is used for mobile phones, toll tags, fuel pump key fobs, animal tracking both wild and domestic as well as many other applications.

We will discuss the use of RF in automatic identification systems, the most rapidly growing segment of today’s automatic data collection (AIDC) industry. RFID (radio frequency identification) uses radio frequency signals to identify “tagged” items, cases and pallets as they move through the supply chain. This data is then collected and transmitted to a host system using an RF Reader.

RFID system consist of the following:

1 - RFID Device (transponder, tag, smart label, card, etc.) – contains data about the tagged item

2 - Antenna – transmits the RF signals between the reader and the RFID device

3 - Reader – receives RF transmissions from an RFID device and transmits to a host system for processing

RFID Singapore - How Does RFID Works?
How does RFID work?

To begin with:

RF signals are electromagnetic waves classified according to their wavelength frequency. The most commonly recognized ranges are low (LF), high (HF), ultra-high (UHF) and micro-wave (uW). Current RFID technology uses frequency ranges from 50 kHz to 5.8GHz. The higher the frequency, the higher the throughput or rates of data transfer.

Typical RFID System Frequency Ranges:

1 - Low Frequency (125 KHz) – has a maximum read range of up to 2 cm

2 - High Frequency (13.56 MHz) – has a maximum read range of up to 5 - 7cm

3 - Ultra-High Frequency (868 MHz – Europe) (915 MHz – US) – has a read range of 3 meters or more

4 - Active Microwave Frequency (2.45 GHz) – has a read range of 25 meters or more

RFID Singapore - What is an RFID Tag?
What is a RFID Tag?

What’s more:

There are a variety of tag designs, shapes and sizes. The basic structure includes a silicon chip (stores data) and an antenna (transmits data to a reader). Together these two components are referred to as the “inlay”. The inlay in turn is embedded in a base material; paper, Mylar, plastic or film.

RFID tags are available in active, passive and semi-passive forms. Each type of tag transmits RF signals to be received and decoded by an RFID reader. Every tag has a unique identifier, allowing its signal to be differentiated from other RF tags.

RFID Singapore - Why Use RFID?
Why Use RFID?

But one thing’s for sure:

By industry estimates, billions of dollars are lost each year due to supply chain inefficiencies and out-of-stock occurrences. RFID promises to improve supply chain efficiencies by giving more control and real time information to manufacturers. This, in turn, benefits the consumer by reduced out-of-stock incidents.

Advantages of using RFID:

1 - Time and Labor Savings – tags with read/write capabilities permit data to be updated throughout the supply chain, highlighting problem areas and enabling faster responses.

2 - Increased Control – RFID as part of supply chain management enables real time decision making for a more flexible and responsive supply chain execution. Decisions can be made to redirect product flow to meet changing customer demands.

3 - Enhanced Customer Service – instant status information leads to more accurate delivery dates and increased ability to respond to urgent orders.

4 - Security – better tracking, reduced inventory shrinkage (loss), reduced counterfeiting.

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