There are many aspects to consider when designing and manufacturing tags. Tags are designed to be manufactured in large quantities and at very low cost while maintaining performance. Here are a few key performance parameters and factors to consider when designing tags:
Read speed: Speed is important because all the data contained in the tag needs to be transmitted when two NFC devices are close together. If the tag transmits data slowly, there is a risk that the data will not be fully transmitted and reliability will be poor. This affects users, who do not understand the technology and lose confidence in it if they have to repeat it many times before it works. The first type of NFC tags allows all data to be transmitted in blocks, maintaining the tag's read performance.
Die size: Die size is of particular importance in tag design. Smaller size means lower cost and less conspicuous tags (important for use in posters). Smaller memory naturally leads to smaller die size.
Unit price: Given that the target application of NFC tags is very low cost (for example, for smart posters), unit price is an extremely important factor in tag design. Here, cost is crucial. Tag cost is affected by a number of factors, including memory size and the complexity of the integrated circuit due to the additional features included. By keeping the memory and features as simple as possible, costs can be kept down. When the NFC system really takes off, the production volume of tags may reach billions; careful design is needed to strike the right balance between cost and performance.
Near field communication (NFC) is a contactless radio technology that can transfer data between two devices within a few centimeters of each other. It is a relatively efficient way to improve the quality of life for payment, access, transportation, etc.
