Dynasys Mount-on-Metal RFID packaging technology is based on EPC Gen 2 integrated circuit (IC) chips from US-based Texas Instruments, Impinj and NXP.

Dynasys’ tag is the first practical UHF Gen 2- EPC TI-RFID tag available for the normally difficult application environment associated with metals. Normal UHF transponders can suffer pronounced reductions in read-range performance when attached to metal due to the fact that the UHF signal is drastically attenuated by the metal surface.

In order to achieve Mount-on-Metal performance Dynasys Tags utilize a Planar Inverted F Antenna (PIFA). In order to understand the PIFA imagine a simple “monopole” antenna, like a vehicle’s old radio antenna rod sticking straight up off the metal fender. The metal fender (Ground Plane) acts as a reflector and the single rod “sees” its reflection as if an equal length antenna is sticking down below the fender. The radio energy induced in the rod creates “excitation currents” in the ground plane (metal fender) which acts as a perfect energy reflector. The more metal that is available in the ground plane, the better the efficiency of the antenna. Now imagine folding the rod over such that most of its length is now spaced off and parallel to the ground plane. Additional lumped components are introduced to re-tune this folded-over structure back to resonance at the assigned frequency. This in essence is a Planar Inverted F antenna that provides a very efficient omni-directional far-field radiation pattern. Not only does the PIFA structure allow direct “Mount-on-Metal” but it also uses the metal backplane to provide twice the capture area of a single element. Dynasys RFID tags use a planar radiating patch element consisting of a metalized PCB layer that sits above a larger parallel ground plane PCB layer. The areas of the metallization layers as well as the spacing distance between the layers has been optimized to provide a resonant tank at 900 MHz, the proper bandwidth to be able to process the spread spectrum data channel and the correct matching impedance for minimum losses.

Features:

• Dynasys mount-on-metal UHF Gen 2 tag technology operates effectively with a very good read range, especially when attached to metal.
• Users can also write to the chips under the lowest RF power conditions in spite of background electromagnetic interference (EMI) common in typical supply chain factory floor and warehouse environments
• Optimized chip-to-reader sensitivity. Results in the ability to more accurately track products and packages at all points throughout the supply chain operations and improve process flow.

One of the major factors hindering the widespread adoption of RFID technology today is the inability to read UHF tags on metallic or liquid objects. Radio waves are not only reflected by metals, but are also weakened by eddy currents that reduce signal capacitance.

In environments surrounded by metal objects and structures, using RFID effectively becomes a problem. Our Mount-on-Metal RFID tags overcome this problem.

Each tag is equipped with a transponder unit and a memory chip and when a RFID antenna equipped with a decoder and transceiver emits a signal, the tag gets activated to either store or retrieve the data. These tags work at the 900MHz spectrum and have a reading range up to 5 meters when mounted on metal surfaces. The tags also feature multi-protocol support (EPC Class 0/0+, EPC Class 1, ISO18000-6b/Ucode 1.19, Gen 2) making them flexible enough to be deployed in RFID networks of varying frequencies.