Not just a RFID Glossary

04.08.2015_glossary_RFID

This article is a glossary of the most common terms used into the radio frequency world.

Inductive coupling

In an RFID system the dialogue between transponder and reader happen only because the antennas let it. The antenna’s construction made this exchange of infos possible. A reader emits, throw antennas,  electromagnetic energy in radio waves form. With inductive coupling this energy will beable to energize passive transponder, who give back to the reader a different signal decoded by the middleware.

Backscatter

Phisically speaking is the reflection of particles, waves or signals back to the direction from which they came. This let transponder answers to the signal incoming from the antenna-reader.

Beacon

Beacons are transponder RFID, active or passive, that could transmit signals after particular enquiries or with precise time delay. These are used for many things, the last ones that show this technology to a large crowd, are marketing activities for retails or in particular events.

Branding (Marketing)

The process involved in creating a unique name and image for a product in the consumers’ mind, mainly through advertising campaigns with a consistent theme. Branding aims to establish a significant and differentiated presence in the market that attracts and retains loyal customers.

B2B (Business-to-Business)

In marketing this term is used when the products and services of the business are marketed to other businesses. 

B2C (Business-to-Consumer)

In marketing this term is used to define business relationships between business and the final consumer.

Commissioning

It’s the process of writing of the EPC memory of a chip for the first time.

Near-field Comunication

It means that the information’s arriving from a transponder located at a lower distance than the wave lenght. It’s a particular type of HighFrequency technology, with the same wave lenght (13,56MHz)It’s the only RFID technology usable with smartphones. In a simple way to explain it, it’s when you can read a NFC tag very close to the NFC antenna with your smartphone.

Contactless smart card

This smart card are like the known card, with the same standardized dimensions, like the credit cards. The difference is that this kind of card has an RFID chip and an antenna inside. This two devices let identification of the card at distance. The term contactless, means that could be only “read” very close (few millimiters) to the antenna.

EPCglobal

It’s a no-profit organization lead by GS1 that controls diffusion and the right implementation of its standard. At this moment its is the most used standard for RFID implementations.

Smart label

It’s a label with a barcode on the front and an RFID tag attached.

Far-Field Communication

It’s reading of an RFID tag at long distance. Tecnically, this happen when the distance between tag and antenna is bigger than the wave lenght.

Reader RFID

It’s the device used for communication. It has to be helped by antennas in this job. The reader emits throw antennas a signal, received by the transponder wich, in turn, send back to the reader its ID serial number and all the information it bring.

Phantom read

It’s a mistake made by a reader that “read” a tag that doesn’t exist. It could often happen during the first tests into a new place and for many reasons.

Middleware

It’s a software that work as a filter of datas arriving from the antennas to the central unit (PC). Contains anti-collision models and let user reach only the informations he needs.

Air interface protocol

Into mobile and wireless world, it is the standard used to made possible communication between different device with radio frequencies.

Active Tag

It’s an RFID tag that contains inside a battery. It can, like passive tags, exchange information with antennas. Despite the passive technologies, it has much more power and could be read a very large distance. It’s used when passive tag doesn’t have enough power to be identified. Against this technology it’s more expensive than the passive ones.

Passive Tag

RFID tag without battery alimentation. The power used to transmit its serial ID number and the other datas, is given by the power transmitted  from the electromagnetic field ti the transponder. This power wake up the tag’s chip and make possible the info’s exchange.

Tag RFID

It’s a device composed of a chip, with memory, linked to an antenna, with an unique and undeletable identification serial number. The tag could appear as a label or in specials hard case. It’s peculiarity is sharing its memory to a antenna-reader system. To be possible this exchange, the reader has to excite properly the transpoder. A tag could ne read only by a reader that works on the same frequencies.

Transponder

In telecommunications’s world, it is a device that emits an identifying signal in response to an interrogating received signal. Tag is its synonymous.

WORM (Write-once read-many)

It’s a particularity of the chip contained into the tag. This chip could be write only one time but could be read many times. In simple words, this kind of tag could only be read by readers, not writed.

Cross Selling

Is the action or practice of selling an additional product or service to an existing customer. The objectives of cross-selling can be either to increase the income derived from the client or to protect the relationship with the client or clients. The approach to the process of cross-selling can be varied.

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