Is the signal strength of 4G industrial routers related to the number of antennas?

Is the signal strength of 4G industrial routers related to the number of antennas?

The antenna is an important part of an industrial-grade wireless router. There are also primary and secondary antennas on the communication module. The primary antenna is the most important signal. Good meaning does not mean that the number of wireless router antennas is more, and it does not mean that the antennas are more capable of it. The transmission capacity of the wireless signal increases exponentially, and the penetration is better.

In fact, the signal of a multi-antenna wireless router is only about 15% to 20% stronger than that of a single-antenna wireless router. A simple manifestation is that after a single-antenna wireless router is separated by a wall, its signal remains one grid. The wireless signal of a multi-antenna wireless router hovers between a single grid and two grids, and the difference in wireless signal strength is not too great compared with a dual-antenna wireless router and a four-antenna wireless router.