When it comes to the design of mobile terminals, no space of one millimeter is saved in the case, which can create huge value for the end customers. Saved space, you can use larger, higher-resolution displays, larger-capacity batteries, and more sophisticated processors and components. All of these can enhance the functionality of the device while enhancing the user’s overall experience.
Large-scale MIMO (multivariable control system) antenna configuration and increasingly complex RF front-end will enable the RF line to occupy more space in 5G smart phones, and among other factors of the terminal, support the processing capacity required for massive 5G data It may also affect battery capacity and geometry. In this way, despite the increase in input/output demand, the space available for PCBs in 5G mobile terminals will still be greatly reduced.
2.High frequency and high speed
With the advent of the 5G era, the obvious change in circuit board performance is high frequency and high speed. As applications such as 5G and IOT will use higher frequencies, they will gradually increase from below 3 GHz to 6 GHz or even 24-30 GHz. Due to the inherently higher frequency of 5G, stricter impedance control is required. If it is not formed by extremely precise methods, the thinner lines of 5G PCB may increase the risk of signal attenuation and reduce data integrity.
There is “impedance” and “dielectric loss” in the signal transmission in the PCB, and it increases with the high-frequency or high-speed digitalization and high power of the signal, so that the PCB continues to heat up and heat up. The first phase of China’s 5G commercial frequency band is mainly concentrated below 6GHz, and it will be as high as 24-30GHz in the later period. The transmission rate of 5G will continue to increase while the amount of data transmission will increase greatly, plus 3D video, cloud games and wireless charging applications. The emergence of these factors, soy milk has caused the calorific value of 5G communication terminals to increase significantly compared to the 4G era.