Mobile Phone Extender Outdoor Long Range Wifi Antenna

First, the core function of the antenna: signal transmission and reception.

The antenna of the wireless router is essentially the "transceiver" of wireless signals, which is responsible for converting the digital signals processed by the router into electromagnetic waves and transmitting them, and receiving the signals returned by the terminal equipment. It is not a simple signal amplifier, but an accurately designed oscillator structure to realize efficient signal transmission. There are significant differences in signal radiation efficiency and anti-interference ability of antennas with different materials and processes (such as common plastic-coated antennas).

Two antenna types: omnidirectional and directional.

Omni-directional antenna: 360 signal coverage

The omni-directional antenna radiates signals evenly in the horizontal direction, just like a sprinkler sprinkles water evenly around, and has no specific directivity. This feature makes it suitable for scenes that need all-round coverage, such as home, small office and other point-to-multipoint communication environments. When the devices are distributed in all directions around the router, the omni-directional antenna can ensure basic signal coverage at every location.

Directional antenna is like a "precision guided weapon" in the field of communication. It abandons the signal transmission mode of wide-area scattering, concentrates the energy and signal height in a single direction, and realizes the directional transmission and reception of signals with high accuracy, which greatly enhances the signal strength in a specific direction and effectively extends the transmission distance.

Directional Omni Directional Antenna plays an irreplaceable role in scenes that need long-distance stable transmission. For example, in remote mountainous areas, when the base station at the top of the mountain is connected to the network of the village below the mountain, the terrain is complex and the distance is far away, so it is difficult for ordinary antennas to meet the demand. In a large industrial park, in the application scenario of data interaction between factories and remote control of intelligent equipment, directional antenna can avoid the signal interference generated by a large number of industrial equipment in the park in a complex electromagnetic environment, such as opening a special signal "highway" to allow data to be transmitted safely, quickly and stably between factories, thus escorting the development of industrial automation and intelligence. In areas with high signal density, such as urban commercial centers, mobile phone signals, wireless networks, Bluetooth and other signals are intertwined, and the signals emitted by ordinary antennas are easily interfered. Directional antenna can rely on its "direction identification" characteristics, just like accurately locating the target in a chaotic signal ocean, only focusing on signal transmission and reception in a specific direction, effectively filtering interference signals in other directions, thus ensuring the stability of communication links and bringing users a smooth and unimpeded network experience.

Thirdly, the difference of antenna characteristics caused by frequency band differences.

Modern routers generally support 2.4G and 5.8G dual bands, and the signal characteristics of different frequency bands determine the differences in antenna design:

2.4G frequency band: long wavelength, strong diffraction ability and good wall penetration performance, but the transmission rate is relatively low, which is easily interfered by Bluetooth, microwave oven and other equipment. Adaptive antennas pay more attention to signal coverage.

5.8G band: short wave length and fast transmission rate, but large wall loss and limited coverage. Its antenna usually adopts multi-array design, and the signal strength in a specific direction is enhanced by beamforming technology.

Fourth, the "truth" of the number of antennas: not more is better.

Many users think that "the more Outdoor Antenna, the stronger the signal", but the actual situation is more complicated. The signal coverage ability of the router is determined by the number of antennas, transmission power, chip performance and software algorithm. Multi-antenna designs (such as 4-antenna and 6-antenna routers) often combine MU-MIMO technology to realize high-speed transmission of multiple devices at the same time. However, when a single device is connected, the improvement of signal strength by the number of antennas is limited.

In addition, the antenna layout and placement angle are also important. Vertical antenna is suitable for covering horizontal space, while inclined or multi-angle antenna can optimize signal coverage in different height areas. For example, if the router antennas are placed at a 90-degree intersection, both horizontal and vertical signal coverage can be taken into account.

Verb (abbreviation of verb) practical suggestion: choose the appropriate 4G Indoor Antenna scheme.

Home scene: Choose a dual-frequency omni-directional antenna router, taking into account coverage and transmission speed, to meet the daily needs of Internet access and video playback.

Large apartment or complex environment: it can be matched with directional antenna expander to carry out directional enhancement in weak signal area; Or adopt Mesh networking scheme to realize seamless coverage through multi-node relay.

Professional applications: such as enterprise monitoring, long-distance wireless transmission, etc., high-gain directional antenna is preferred to ensure stable signal transmission.