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Hitachi Chemical Markets Tiny UHF Tag
Measuring only 2.5 millimeters in length and width, the Ultra-Small Package tag has a read range that can be boosted by means of an external antenna or other metallic object.
Sep 10, 2012—Hitachi Chemical is marketing an EPC Gen 2 passive ultrahigh-frequency (UHF) RFID tag that is one of the smallest tags on the market, measuring just 2.5 millimeters (0.098 inch) square and 0.3 millimeter (0.012 inch) thick. Consisting of an Impinj Monza 5 chip and an antenna embedded in epoxy resin, the Ultra-Small Package tag is designed to be durable enough that it could be applied via injection molding or incorporated into printed circuit boards. This means the tag could be built into a circuit board or a semiconductor's packaging, and sustain the temperatures typically used during the manufacturing processes—as high as 260 degrees Celsius (500 degrees Fahrenheit).
What especially differentiates the tag, however, is its ability to extend its read range. Due to the antenna's small size, the tag can be interrogated only in the near field—approximately 10 millimeters (0.39 inch). However, the company reports, the read range could be extended up to 4 meters (13.1 feet) via a booster antenna that could be designed specifically for the tag. Alternatively, the range could be extended simply by mounting the tag adjacent to a metallic component of the object on which the tag was mounted.
Hitachi, by drawing from the semiconductor packaging technologies of the Hitachi group.
In developing the tag, Nagase says, the company's goal was "not to make just another inlay. We wanted to differentiate [our product] from other inlays." Its size and durability—it can operate at temperatures of -40 degrees to +85 degrees Celsius (-40 degrees to +185 degrees Fahrenheit—make it unique, he says, as does the ability of the tag's built-in antenna to capacitively couple with a booster antenna (or other metallic object), thereby extending read range to 4 or 5 meters (13.1 feet to 16.4 feet).
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