5G mobile phone antenna characteristics and technology

(1) 5G terminal antenna is very sensitive to surrounding metals

Because the wavelength of millimeter wave is very short, the interference from metal is very strong. The printed circuit board (ie PCB board) needs to maintain a clearance of 1.5mm between it and objects with metal.

(2) The 5G antenna is a lattice of vertical and horizontal antenna interactions

This antenna with vertical and horizontal interaction corresponds to the transmission and reception of signals in the vertical and horizontal polarization directions.

(3) The 5G antenna has special requirements for the installation location

Because the 5G terminal antenna is a phased array system, its antenna units need to be synthesized to form a focused beam, so it needs to be placed in a regular position, and the antenna cannot be blocked by metal, which is suitable for 3D space scanning and regular space. 5G terminals are blocked by human hands and human bodies, and their signals will start to look for the optimal bit error rate frequency band. To put it figuratively, the mobile phone is like a small pet with eyes. Once it is blocked, he will immediately turn his eyes around to find the optimal channel. We call this action of 5G mobile phone mobile phone optimization. Therefore, when designing a terminal, the antenna position should be suitable from the beginning to make it easy to optimize. At present, among mobile phone terminals, the most suitable 5G antenna positions are at both ends, especially the upper end (near the earpiece), and other 4G antennas must make way for them, which means that there is a preferred position, and other antennas are moved to other places.

(4) The 5G antenna is a module containing a chip

Antenna lattice, 16 small rice-grain-sized antennas, it is impossible to use 16 shielded wires to lead out signals to the RF chip, and it is necessary to solve the problem of connecting with the chip on the spot. The lead-out antenna is integrated with the lattice antenna, and generally one chip manages four lattices. The output of the antenna module is not a radio frequency signal, and the connector can be used to lead the terminal to the main board of the mobile phone.