The antenna is an important part of the Bluetooth earphone PCB. The PCB has through and metalized vias, and the walls of the vias form a conductive layer; the antenna conductor is etched on the upper antenna conductor of the copper foil on the top of the PCB and under the copper foil on the bottom of the PCB The antenna conductor, the antenna's radiation intensity and radiation efficiency are in the optimal state, which can effectively realize the reliability and stability of the Bluetooth headset product.
Compared with 4G, the number of 5G base stations will increase. Due to the high-speed and high-frequency characteristics of 5G, as far as a single base station is concerned, the value of the communication board will also be greatly improved.
Most PCBs used in automobiles are 4-layer, 6-layer, 8-16-layer boards. The production requirements for automotive electronic PCB boards are not much different from ordinary PCBs in design. The defect rate is mainly reflected in the process. The PCB is low, and the requirements for vibration and high temperature performance are higher.