There are many design and manufacturing considerations to be taken into account for NFC tags. They are intended to be manufactured for very low cost in very large quantities, while maintaining their performance. There are a number of key performance parameters and elements that need to be considered when designing an NFC tag.
Read speed:This issue is important because it is necessary for the NFC tag to be able to pass all its data over while the two NFC devices are within range. If the NFC tag can only transfer data at a slow rate then there is a real danger that all the data may not be transferred in time resulting in a poor level of reliability.. In turn this will affect the user and the user, who not understanding the technology will easily be turned off from using the system if they have to keep re-trying to successfully transfer the data. NFC tag type 1 allows all the data to be transferred in one block which enables the read performance of the tag to be maintained.
Die size:The die size is of particular importance in the design of an NFC tag. A smaller die, results in lower cost and also the in the NFC tag being less obtrusive - an important factor for tags used in posters, etc. Smaller memory sizes naturally lend themselves to smaller die sizes.
Unit price:The unit price of the NFC is a very important factor in their design as many NFC tags will be aimed for very low cost applications such as smart posters. Here cost is of great importance. The cost of the tag is influenced by a number of factors. These include factors such as the memory size and general IC complexity resulting from additional features that need to be included, By keeping the memory and features as simple as possible the cost can be kept down.
With manufacture of NFC tags likely to run into billions when the system fully takes off, the design of tags will need to be undertaken very carefully so that the correct balance of cost and performance can be obtained.
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