What does a dual-band antenna do?
Penelope Carter
Updated on June 12, 2026
A dual-band antenna is an antenna that can send and receive radio frequency signals at two distinct frequencies. Depending on their configuration, these antennas are capable of using either of the two frequencies individually or at the same time.
What is a dual-band WiFi antenna?
A dual Wi-Fi antenna is a pair of identical antennas on a wireless router or Wi-Fi-equipped device, intended to eliminate signal fading and dead spots. A dual antenna on either the router or the end user device offers a solution to the problem of Wi-Fi fading, dead spots, and drop-outs.
Is higher dBi better for antenna?
The higher the dBi number of the antenna, the higher the gain, but less of a broad field pattern, meaning that the signal strength will go further but in a narrower direction, as illustrated in the diagram below.
Why do WiFi routers have 2 antennas?
Multiple antennas create several streams for sharing data over radio channels, which brings more bandwidth to your devices. Specs like MIMO and MU-MIMO increase a router’s capacity to transmit and receive data, which makes your network faster.
Why do WIFI routers have 2 antennas?
How far can a dBi antenna go?
Antenna Basics
| Antenna | Type | Max Range |
|---|---|---|
| 2.5 dBi | Omni directional | 300ft |
| 5 dBi | Omni directional | 500ft |
| 7dBi | Omni directional | 800ft |
| 8dbi | Omni directional | 1500ft |
Can two antennas be combined?
Adding a second antenna can increase the signal path coverage and give you a more consistent signal. To accomplish this you will need a combiner or coupler that can combine the two antennas together. I would recommend that you use two identical antennas. This will ensure a balanced signal path and coverage.
