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Penghui RMS180 series is widely used in communications, electronics, aerospace, military, navigation, medical, environmental protection and many applications microwave, high frequency industrial sector, electronic digital products, wireless charging, RFID radio frequency identification, mobile communication equipment, wireless equipment, office automation equipment (personal computer, TFT LCD, etc.), audio / video communication equipment terminals, digital switches, flexible circuit board, high speed CPU chip, image processor, oscillation chip, storage chip, high speed signal line speed, shield shell, high speed microprocessor, WIFI, GSM, Bluetooth, and more.
The coverage range of 5G base station is about 100-400 meters, and the coverage radius of 4G base station is about 1-3 km; 3G base station is about 2-5 km; and 2G base station is about 5-10 km. Compared with 3G and 4G, 5G frequency band is expanded from centimeter band to millimeter band, with higher requirements for network communication, that is, faster data transmission speed, higher frequency band and greater bandwidth. However, all kinds of high-intensity electromagnetic wave radiation can produce interference signals in the process of mobile communication propagation, thus affecting the communication quality. At the same time, the electromagnetic radiation between high-frequency devices and equipment is also increasingly serious harm to human body. Therefore, how to effectively eliminate electromagnetic interference and electromagnetic radiation and other electromagnetic pollution has become the key technology to be solved in the current 5G communication electronic equipment, and the wave absorption chip is one of the most effective ways to eliminate electromagnetic pollution.
Eliminate the high-frequency electromagnetic interference problem: wave-absorbing material VS electromagnetic shielding material
Elimination of electromagnetic interference and protection of electromagnetic radiation usually uses electromagnetic shielding and wave-absorbing materials. In solving the problem of high-frequency electromagnetic interference, the complete solution of shielding is more and more can not meet the requirements. Because in many devices, the port setting and ventilation and windows make the actual shielding method impossible to form a fully shielded electric cage like the faraday electric cage, and the port size is a big threat to the high frequency of the equipment. In addition, there is another problem that troubles people. After the equipment implements the effective shielding, although the external interference is solved, the electromagnetic wave interference still exists in the shielding system, and even because of the shielding, the interference intensifies, and even causes the equipment can not work normally. These are the problems of shielding, and it is precisely because of these problems that the absorbing film has a useful place.
Wave absorption material refers to a kind of materials that can effectively absorb the incident electromagnetic waves and scatter and attenuate them. It converts the incident electromagnetic waves into heat energy or other energy forms of energy to achieve the purpose of absorbing the electromagnetic waves. Unlike shielding solutions, its efficacy is to reduce the number of interfering electromagnetic waves. It can be used alone to absorb electromagnetic waves, but also can cooperate with the shielding system to improve the high-frequency effect of the equipment.
According to the material loss mechanism, the absorbing material can be divided into resistance, dielectric and magnetic dielectric, silicon carbide, graphite resistance, electromagnetic energy mainly decay in resistance; barium, dielectric type, electron polarization, ion polarization, molecular polarization, interface polarization, polarization, absorb magnetic waves, ferrite, ultra-fine metal powder, with high magnetic loss angle, hysteresis loss, domain wall resonance, magnetic polarization mechanism decay, absorbing electromagnetic waves, afterlife loss.
