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Would NFC and UHF Chips on a Single RFID Card Be Problematic?

Posted By RFID Journal, 09.10.2019

My company attended the RFID Journal LIVE! Europe conference in 2018 and we would like to use a single RFID card for multiple purposes. Specifically, we want to put an NFC chip and a UHF chip on a card measuring 35 millimeters by 65 millimeters (1.4 inches by 2.6 inches). The different chips would serve different purposes: the NFC chip would be scanned by an NFC reader, while the UHF chip would be read by handheld and fixed readers. My question is this: Would the two chips on the single card corrupt each other? And would the different readers become confused by the two chips?

—Hanno

———

Hanno,

It is certainly possible to do this. NFC transponders are high-frequency devices and use electromagnetic coupling to communicate with the reader. Passive UHF devices employ backscatter to communicate with the reader, so there will be no confusion. There are companies that make dual-frequency cards. Back in 2013, Bristol ID Technologies introduced such cards at our RFID Journal LIVE! conference (see Bristol ID Announces Dual-Frequency and Asset-Tracking Tags).

—Mark Roberti, Founder and Editor, RFID Journal

USER COMMENTS

Paul Muller 2019-09-10 05:03:30 PM
Hanno What you are asking for is certainly possibly as explaiend by Mark, but beyond that at EM Microelectronic we provide a combined #RAINFC solution (http://echo.emmicroelectronic.com). Our dual-frequency tag-IC supports both NFC and UHF RAIN RFID communication with a single chip with shared memory. The RAINFC technology enables data exchange between the two domains enhancing both retail and logistics applications. You can contact us at RFIDsupport@emmicroelectronic.com if you want to learn more. Paul
Harley Feldman 2019-09-14 09:32:40 AM
At RFID Journal Live!, Seeonic announced its XTAG, one of the ten Finalists for Best New Product. XTAG is locally readable, providing an asset ID, using RFID and NFC readers with both transponders working in parallel on the XTAG. In addition, the XTAG/C has a LTE/M1 circuit and a GPS circuit for providing the asset ID and location data from the tag through a cellular network, and the XTAG/L has a LoRa circuit for providing its data through a LoRa network. All four wireless technologies are implemented on one asset tag.

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