Article Tools

• 

WJ Communications Inc. has successfully developed a groundbreaking RFID UHF silicon reader chipset. The WJC200 is the industry’s first RFID reader chipset that meets the ECPglobal Gen2/ISO18000-6C and ISO18000-6B international standards.

This low-cost reader chipset is an excellent candidate for RFID-enabled mobile and stationary printers, readers, PDAs and handheld devices. WJ has adopted this RFID chipset as its technology flagship for its next generation, smaller form factor line of RFID modules to provide a lower cost of ownership to our customers. This is the first in a series to be developed in the 2007 wave of new RFID products.

The WJC200 simplifies UHF reader designs with transmit preamble and data encoding and modulation, frequency-agile carrier generation, and downconversion and decoding all incorporated into a single chip with minimal external components. The on-chip protocol engine supports ISO18000-6B and ISO18000-6C (also known as EPCglobal Generation 2); support for other RFID protocols is possible using external controllers. In ISO18000-6C operation, Tari values of 6.25, 12.5, and 25 microseconds, and tag link frequencies from 40 KHz to 240 KHz are available.

The WJC200 also enables dense-reader-mask-compliant transmission. The on-chip synthesizer supports operation within the 902 MHz to 928 MHz U.S. ISM band; with the aid of an external VCO, the frequency range is extended from 860 MHz to 960 MHz, encompassing all major RFID frequency bands.