Near field communication, also known as short-range wireless communication, is a short-range high-frequency wireless communication technology that allows electronic data exchange between point-to-point data transmissions. Because near-field communication has natural security, NFC technology is considered to have great application prospects in the field of mobile payment. In Asia, Japan, South Korea, Hong Kong and other regions, NFC applications based on mobile payment are already popular. In China, with the three major operators and UnionPay unified in the payment of 13.56MHZ standards, NFC applications are likely to usher in explosive development. At present, internationally renowned mobile phone manufacturers Samsung and HTC have all sold models for domestic operators. Some domestic products such as Huawei, ZTE, TCL and Lenovo have been released or are in the process of developing and researching NFC-enabled projects. Without exception, they are all aimed at domestic NFC applications. In addition, Beijing Public Transport, the subway system is the first to support mobile phones with NFC-enabled mobile payment. This article refers to the address: http:// The emergence of NFC is not only innovation but also a reform. With the development of technology and mobile phone industry, we have reason to believe that the application of NFC is a development trend. This emerging technology is not limited to mobile payment, but will be more widely used in terminal pairing and data transmission. With more than 60 years of history, Murata Manufacturing Co., Ltd. (hereinafter referred to as Murata) is one of the world's leading and most powerful electronic component manufacturers. Since its founding in 1944, Murata has been committed to becoming a professional manufacturer of electronic components. After more than sixty years of step-by-step leap, Murata's high-tech products are now widely used in computers, television, mobile phones, automobiles, medical and other industries. Nowadays, in the field of NFC, based on the design advantages, the technical problems of metal backshell and narrow space NFC function realization have been successfully solved. Murata has once again made great contributions to the development of the wireless communication industry. NFC is an important part of the "mobile wallet", mainly for the mutual communication between consumer electronic devices, and has attracted much attention in the fields of access control, intelligent identification, and device pairing. Relatively speaking, the more widely known RFID (Note 1) is good at long-distance identification, so it is used more in production, logistics, tracking, and asset management. Although both are based on data exchange and collection, there is no doubt that NFC has its unique strengths to unveil its unparalleled irreplaceability. First, NFC is a technology that combines a contactless card reader, a contactless card, and a peer-to-peer function. It has a card mode, an R/W mode (read-write mode), and a P2P (data transfer between mobile phones) mode. The form of the three modes. This means that after the built-in NFC chip in the mobile phone, it can be used as an RFID passive tag to play the payment function; it can also be used as a reader to collect and exchange data, and also supports data communication between multiple NFC phones. Secondly, in terms of communication distance, RFID transmission distances range from a few meters to tens of meters, while NFC is much closer, and it can support transmission within 4 cm. It is also because of these obvious differences between the two, which has led to their differentiation in the application field. It is undeniable that NFC has unique advantages in the field of mobile payment and even in the field of communication. In fact, NFC also has some restrictions, such as metal back shell, narrow NFC antenna space, etc. Murata has evaded the loopholes through technology research and development, overcoming the loopholes. These limitations have been refined to complement the technical application of NFC. If more and more miniaturized, the NFC function is added to the increasingly compact mobile terminal and electronic products, the traditional large-area planar antenna will be seriously challenged. Murata broke through the tradition and developed an antenna with a special structure of ferrite obliquely inserted into the coil, which increases the flexibility of the NFC antenna design so that the antenna can be placed on the top and side of the phone. Moreover, on the basis of the same performance as the conventional large-area NFC antenna, the area of ​​the antenna can be reduced, and the antenna cost is largely reduced. The diagonal plug-in antenna is as follows: The metal environment is an inevitable factor affecting the performance of NFC antennas, especially in mobile phones or terminals using metal backshells. The performance of NFC antennas is difficult to achieve. However, the metal backshell phone and terminal are favored by users for their unique texture. In response to this special situation, Murata does not affect the overall appearance of the fuselage, the hole area of ​​the camera is used as a booster, and a small slot is opened to make the NFC antenna even a metal case. The performance makes it possible to enjoy the convenience of the NFC function while experiencing the metal texture of the terminal. As shown below: In addition, Murata broke through the traditional NFC antenna feed point through the mechanical contact of pogo pin or shrapnel and the rules of the chip connection, developed a contactless coupling type of contact, only the chip size of the primary coil on the PCB It is directly connected to the NFC chip, and the secondary coil can be placed in the rear case or other parts in a more flexible manner using thinner coils. The implementation of the NFC function has another option. As shown below: What we all need to recognize is that although NFC has an unparalleled market prospect and diversified technical support, it does not mean that the development of NFC must be smooth. The new technology not only directly affects the current market structure, but also largely reverses the consumer behavior that consumers have already formed. This requires the technology itself to be given more value, which is not easy. Fortunately, at least in the collaborative construction of manufacturers such as Murata, NFC has been moving in a direction of correct and sustainable development. We also believe that with its unique technical creativity and research and development enthusiasm, Murata will definitely go further in China.
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November 16, 2020