Is the bigger the wireless router dBi, the better? At present, common wireless routers can be learned by checking the parameters, and most of them are 3dBi, 5dBi or 7dBi. For users, is this value the larger the better, or the smaller the better?

This problem can be understood by looking at the diagram of the next antenna gain.

The higher the DBI value, the greater the gain, the smaller the vertical angle, and the longer the transmission distance, but the smaller the short-distance transmission area, the smaller the DBI value, the farther the vertical angle, and the larger the short-distance radiation area. At present, common wireless routers on the market generally have antenna gain values ​​of 3dBi and 5dBi, while some of the main wall-through router antenna gains use 7dBi gain wireless antennas.

For ordinary users, when the home area is not large, the gain of 3-5dBi is conducive to signal reception. Although the larger the router antenna, the stronger the wall penetration ability, but the exclusive area is likely to become a blind spot. Such routers often require more router antennas to solve the signal coverage problem, and the product price is very high.