After the read, you will learn about:
- How To Choose A Wireless Antenna Frequency range
- How To Choose A Wireless Antenna Gain
- How To Choose A Wireless Antenna Polarization direction
- Wireless Antenna applications
- Precautions for purchase of booster antenna
A. Wireless standard
B. Signal transmission range
C. How To Choose A Wireless Antenna Network Type
D.Installation location
E. How To Choose A Wireless Antenna Brands
How To Choose A Wireless Antenna Wireless Antenna For Your Device?
The signal coverage area of an ordinary wireless router is limited. The indoor transmission distance is 20 to 30 meters, and the outdoor transmission distance is 50 to 100 meters. What should we do if this distance is exceeded? Now let’s take a look at the purchase of signal gain antennas.
The wireless gain antenna has a wide range of applications. The product is aimed at various wireless network equipment such as wireless routers and wireless network cards. It is a cost-effective network quality improvement solution. Before we understand the wireless gain antenna, let’s take a look at several important parameters.
1. How To Choose A Wireless Antenna Frequency range
It refers to which frequency band the antenna works in. This parameter determines which wireless standard wireless equipment it is suitable for. The working frequency bands of different wireless equipment are different. If you buy an antenna suitable for other frequency bands, the signal volume will be greatly reduced.
For example, the frequency range of a certain antenna’s technical indicators is 2400 ~ 2485 MHz, which means it is suitable for equipment with a working frequency of 2.4GHz.
The 802.11a standard wireless device needs an antenna with a frequency range of 5GHz to match, so be sure to look for the product corresponding to this parameter when buying an antenna.
2. How To Choose A Wireless Antenna Gain
The gain represents the antenna power amplification factor. The larger the value, the greater the signal amplification factor. That is to say, the larger the gain value, the stronger the signal and the better the transmission quality when the transmission power is constant. The unit of gain is: dBi
3. How To Choose A Wireless Antenna Polarization direction
The polarization direction of the antenna refers to the direction of the electric field strength formed when the signal is radiated. The common wireless routers currently on the market all use omnidirectional antennas, so when the wireless router is working, the signal generated by it is evenly radiated to the surroundings, which makes it easy for us to establish a wireless LAN within a certain range.
But if we need to perform wireless long-distance communication, omnidirectional antennas will waste a lot of signals, so in this case, we can choose directional antennas. When directional antennas are working, most of their signals are Transmission in a certain direction, so it can obtain a longer transmission distance under the same transmission power.
4. Scope of wireless antenna application
The booster antenna can be divided into an indoor antenna and an outdoor antenna according to the deployment position.
Indoor antennas are used in environments with short indoor transmission distances and weak transmit and receive power. On the contrary, outdoor antennas generally have long transmission distances and large transmit and receive power. Outdoor antennas have some special designs, such as lightning protection, so they are slightly expensive.
In addition, there is another kind of antenna that is between directional and omnidirectional, which is a sector antenna. It has the function of directional focusing on energy and can effectively cover the range of 180 degrees, 120 degrees, and 90 degrees horizontally. For example, the remote connection point is A sector antenna can be used when the signals are concentrated in an angle range instead of only strong in a certain direction.
Precautions for purchase of booster antenna
At present, there are different types and brands of wireless antennas on the market, and there are many types of antennas that are suitable for different frequencies and different occasions. When purchasing an antenna, you should pay attention to the following factors:
Wireless standard
Wireless standards are the most basic parameters of wireless devices. There are three main wireless network standards, namely the IEEE 802.11b and IEEE 802.11g standards that work in the 2.4GHz frequency band and the IEEE 802.11a standards that work in the 5GHz frequency band. When purchasing, you must pay attention to purchasing the corresponding products, otherwise, the network signal may even drop.
Using the environment
Before buying, you must determine whether the antenna is used indoors or outdoors. This depends on the actual situation. If the use environment is indoors and not far away, you can buy indoor antennas. When the distance between wireless devices is relatively short. For example, in situations such as crossing a building, an outdoor antenna is required. Therefore, it is necessary to distinguish its use environment when purchasing an antenna.
Signal transmission range
Under normal circumstances, large gain antennas are suitable for long-distance transmission, while small gain antennas are suitable for applications requiring large coverage such as network roaming.
The size of the gain is expressed in dBi. Most indoor antennas are 4-5dBi, and outdoor antennas are mostly 8.5-14dBi.
How To Choose A Wireless Antenna Network Type
For peer-to-peer networks, all wireless network cards should use omnidirectional antennas. If there are only two wireless network cards in the wireless network, then naturally directional antennas should be used.
For the access point network, since the wireless router needs to provide wireless connections for all wireless network cards in the wireless network, an omnidirectional antenna should be selected.
As a wireless network card, because it only needs to communicate with a wireless router, you should choose a directional antenna.
For wireless roaming networks, the wireless network card should use an omnidirectional antenna.
How To Choose A Wireless Antenna Brand?
Although wireless products all follow the same international standard, different products often have different interfaces and use different cables. Therefore, wireless antennas of different brands are often not universal. Therefore, try to choose a wireless antenna of the same brand as the wireless product to ensure that the equipment matches.
C&T RF Antennas Inc meets all your antenna requirements.
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