Analog signal processor enables fixed and portable universal RFID readers - Embedded.com

Analog signal processor enables fixed and portable universal RFID readers

Anadigm's RangeMaster2 is a second-generation RFID reader chip set solution that lets system vendors design and maintain one universal reader that can be customized to read different RFID tag types, with different modulation types and frequencies. The chip set supports HF and UHF protocols, including EPC Global Gen 1 and Gen 2 (class 0, 1, 2) and ISO18000-6 standards.

RangeMaster2 consists of a dynamically programmable analog signal processor (dpASP) and an RFID state machine. It operates at 3.3 V, while providing increased read range and sensitivity optimization with variable gain. It gives users a choice of four different baseband analog signal processing circuits: Universal, EPC Gen 2 (Twin or Triple), or Class 0. RangeMaster2 also supports the ability for the designer to select from 16 predefined values of the upper and the lower sub-carrier frequencies and choose digital or analog outputs. Control is handled through a serial peripheral interface (SPI), giving designers the ability to adjust multiple parameters without disrupting the signal path.

Because the RangeMaster family is based on real-time programmable analog technology, it allows for innovative system design. For example, the gain in the baseband analog signal processor of the RFID reader can be adjusted to dynamically optimize the system's tag read range. Also, the reader can be calibrated at the customer site to eliminate background interferences, such as that caused by fluorescent lighting. The chip set also provides anti-saturation control and can extract all data frequencies from dc to 800 kHz, and selected frequencies up to 3.3 MHz. In addition, more than one signal processor can be managed by the RFID state machine, providing increased optimization of the I and Q channels.

Prices for the RangeMaster2 two-chip solution start at $10.25 in 10,000-piece quantities, with samples available now. For additional information, go to www.anadigm.com.

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