Power and antenna, who really matters?
It's easy to understand how incandescent bulbs and spotlights describe the relationship between power and antenna. The transmitting power of router is similar to the wattage of light bulb. The light bulb of 60W is brighter than that of 20W. The natural signal source of high-power wireless router is stronger. But a 20W spotlight can be brighter than a 60W bulb, because the spotlight shade concentrates the light at one point, and the bulb emits light in all directions on average. The antenna of a router is like a lampshade of a spotlight, which transmits WiFi signals in a concentrated direction.
The relationship between the number of antennas and wall penetration
We intuitively feel that the product of 3 antennas is better than that of single antenna through the wall, which is true. Because the power of 3-antenna products is usually higher than that of single antenna. MIMO (multi-antenna multi-point transceiver technology) can increase speed and coverage. Note, however, that the receiver should match the same number of antennas, for example, our mobile phones are all single antennas.
