The Internet of Things (IoT) is the "Internet of Things". It is an extended and expanded network based on the Internet. It combines various information sensing devices with the network to form a huge network, realizing the interconnection of people, computers and things at any time, anywhere.
The Internet of Things is an important component of the new generation of information technology, also known as pan interconnection in the IT industry, which means that things are connected and everything is interconnected. Therefore, "the Internet of Things is the Internet connected by things". This has two meanings: first, the core and foundation of the Internet of Things is still the Internet, which is an extension and expanded network on the basis of the Internet; Secondly, its user end extends and expands to any item to item exchange and communication. Therefore, the definition of the Internet of Things is a network that connects any item to the Internet for information exchange and communication according to the agreed protocol through radio frequency identification, infrared sensors, global positioning system, laser scanners and other information sensing devices to achieve intelligent identification, positioning, tracking, monitoring and management of items.
The transmission of IoT signals generally uses FPC IoT antennas.
1、 Narrowband IoT antenna
The Internet of Things and smart hardware products require antennas to transmit data online. The smaller the space and the more frequency bands, the more complex the antenna design. The length of an antenna is approximately 1/4 of the wavelength of electromagnetic waves, so the lower the signal frequency, the longer the antenna length.
To achieve the transmission effect of a long antenna with a short antenna, it is necessary to increase the transmission power. Therefore, walkie talkies need to transmit signals using long external antennas, while FM radios only receive and do not transmit, with built-in receiving antennas. For example, 2G (900MHz), 4G (700-2600MHz), WIFI and Bluetooth (2.4GHz), GPS (1.5GHz).
These commonly used narrowband IoT antenna communication methods can be used as built-in antennas. For small-sized products such as mobile phones, wearable designs, and smart homes, external antennas are rarely used, and internal antennas are generally used. High integration, more aesthetically pleasing product appearance, slightly weaker performance than external antennas.
2、 Characteristics of PCB antenna
An antenna is a wire of a specific length. This wire can also be drawn on the PCB board, which is the PCB antenna. PCB antennas are widely used on single frequency module circuit boards such as Bluetooth modules, WIFI modules, and ZIGBEE modules. Advantages: Almost no cost required, no need to debug again after one adjustment.
3、 Characteristics of FPC antenna
FPC antenna is equivalent to pulling out the antenna circuit on the PCB board and using other external metals to make the antenna. Usually used in mid to low end smartphones and smart hardware products with complex frequency bands. Advantages of FPC antenna: Suitable for almost all small electronic products, capable of making complex antennas in more than ten frequency bands such as 4G, with good performance. Due to the good flexibility of FPC, it is easy to stick on curved and irregular surfaces. The cost is also relatively low.
