What is RFID Chip

RFID stands for "radio-frequency identification." It’s a technique where a reader picks up digital data stored in RFID tags or smart labels (explained below) using radio waves. Just like how a barcode scanner captures data from a label and stores it in a database, RFID works similarly. However, RFID has some big advantages over barcode tracking. The key difference is that RFID tag data can be read without needing to line up with an optical scanner, unlike barcode data.

An RFID system has three main parts: an RFID tag or smart label, an RFID reader, and an antenna. RFID tags usually consist of an integrated circuit and an antenna that send data to the RFID reader (also called an interrogator). The reader then converts the radio waves into data that can be used. This data is sent to a host computer system via a communication interface, where it can be stored in a database and analyzed later.

RFID Tag

An RFID tag is made up of an integrated circuit and an antenna. The tag is also enclosed in a protective material that holds everything together and shields it from the environment. The kind of protective material depends on how the tag will be used. For instance, employee ID badges with RFID tags are usually made of sturdy plastic, with the tag embedded between the layers. RFID tags can be either passive or active and come in various shapes and sizes. Passive RFID tags are more common because they’re smaller and cheaper to use. But they need to be "powered up" by the RFID reader before they can send data. Active RFID tags, on the other hand, have their own power source (like a battery), so they can transmit data continuously.

RFID Reader

An RFID reader is a device that can read and write information to an RFID tag using a radio frequency transmitter and receiver. RFID readers can be either stationary or portable. Portable or mobile RFID readers can be placed or carried almost anywhere. Atlas offers just about every Handheld RFID Reader available on the market.

Antenna

For wireless LANs, there are three main types of antennas: omnidirectional, semidirectional, and highly directional.

Highly directional

These antennas are used for point-to-point communication, like connecting two buildings. They’re popular because they emit a very narrow beam over a long distance.

Semidirectional antennas

These are used to provide focused signal coverage over large areas. A Yagi antenna is a good example of a semidirectional antenna.

Omnidirectional

An omnidirectional antenna sends out a signal in all directions. While it’s impossible for an antenna to perfectly emit a signal at the same power in every direction due to physics, this type of antenna aims to provide general coverage. It’s the most common type you’ll find in client adapters and access points because it’s great for strong coverage in a spherical area around the antenna.

What is RF?

RF, short for Radio Frequency, is used to measure the oscillation rate of electromagnetic radio waves or the electromagnetic radiation spectrum. The range of RF spans from 300 GHz to 9 kHz. Typically, antennas and transmitters use RF technology to broadcast and communicate wireless audio.

Hz, or hertz, is the unit of measurement for RF. It represents the number of cycles per second when a radio wave is transmitted.

How to Calculate RF Values

Maybe you’ve run into these questions: How do you calculate RF values? What’s the formula for Rf value? First, you need to understand what an RF value is. So, what exactly is it? Keep reading to find out.

An RF value is the ratio of a solute’s travel distance to that of a solvent. You calculate the Rf value of a compound by dividing the distance the compound traveled by the distance the solvent front traveled (both measured from the origin).

Frequently Asked Question

What is an RFID sensor?

An RFID sensor, also known as an RFID tag, is a small device that uses radio waves to transmit its unique ID and other data. Unlike a barcode, it doesn’t need to be in the line of sight for the reader to capture the information.

How do RFID sensors work?

RFID sensors work by using radio waves.