Another issue is that proprietary hardware and software are used in speci?¬?c application
domains. These devices must be physically modi?¬?ed or redesigned for adjustments in the
speci?¬?cation, introduction of new applications, and modi?¬?cations to relevant standards.
A customizable RFID tag, as shown in this chapter, can handle variations in standards and
requirements as they are developed with a signi?¬?cantly shorter time to market than current
ad hoc techniques. This RFID design automation ?¬‚ow is demonstrated toward the rapid
prototyping of a tag with a representative set of commands from the ISO 18000 Part 7 and
Part 6C protocols, among others.
In addition, the ability to rapidly prototype a custom RFID tag provides an economically
viable means for individual companies to provide specialized features to differentiate their
products from the competition in that particular application. The tools described here give
the company the ability to obtain this differentiation without hiring large teams of skilled
personnel.
3.3 RFID Physical Layer Design Automation
One of the main components of an RFID system communication is the physical layer
protocol employed to encode bits of information. The physical layer features for the bit
encoding mechanism vary across various RFID standards. For example, the ISO 18000 Part
7 active tag standard speci?¬?es Manchester encoding [24] to transmit encoded data RFID
interrogators and tags [2], whereas the ISO 18000 Part 6C standard de?¬?nes different
physical layer features of transactions among readers and tags.
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