Mindware is one of the biggest manufacturer and distributor of Low Frequency RFID Tags. Semiconductors India is the brainchild of Mindware.
The ultra high frequency range includes frequencies from 300 to 1000 MHz, but only two frequency ranges, 433 MHz and 860–960 MHz, are used for RFID applications. The 433 MHz frequency is used for active tags, while the 860–960 MHz range is used mostly for passive tags and some semi-passive tags. The frequency range of 860–960 MHz is often referred to by a single frequency of 900 or 915 MHz. Tags and interrogators in this range are called UHF tags and UHF interrogators. The passive and the semi-passive tags in this frequency range use far-field radiative coupling, or backscatter coupling. The UHF tags have a read range of about 15 to 20 feet. All the protocols in the UHF range have some type of anti-collision capability, allowing multiple tags to be read simultaneously. The new Gen 2 protocol for UHF tags is designed for reading several hundred tags per second. UHF interrogators are usually costlier than HF interrogators, but UHF tags are becoming more economical.
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