“RFID system design is complicated by the dynamic nature of the market and varying specifications around the globe. To make it simpler, designers at Anadigm Inc. have come up with an RFID chipset, known as the RangeMaster, that offers user-selectable parameters, including center frequency, variable gain, and lower and upper sub-carrier frequencies. There is a real need for flexibility in RFID design because the specs are still changing, and, even within a single specification, the RFID tags can be requested to signal back at different frequencies. For instance, RFID tags working within the EPC Global Gen 2 specification can be asked to signal back at a frequency ranging from 40kHz up to 620kHz. The challenge for designers was that a standard DSP + a fixed analog filter could not get the job done. In response, the design team at Anadigm came up with its RangeMaster two-chip set for RFID tag readers.”
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