Hydraulic Rotary Valve,Six-Way Rotary Valve,Flexible Rotary Valve,Rotary Control Valve Shuyang County Huji town Desheng hydraulic machinery factory , https://www.dshydraulic.com
Wireless bridge transmission distance and these are closely related!
Frequently asked about the distance of the wireless bridge transmission distance is determined by what factors, today Xisheng Microvision will open this mystery to everyone.
The wireless bridge problem may be difficult for some friends who are not familiar with the wireless network. In fact, the answer is relatively simple. It is the three aspects of the wireless bridge (antenna, power, chip).
Antenna: Responsible for signal transmission and transmission. At the same time, antenna gain size and angle size determine the transmission distance and transmission direction.
Power: The transmission power of the wireless bridge is a good analogy to the engine of a car. The power output of the engine determines the driving speed, so the power of the wireless bridge affects the transmission distance.
Chip: The wireless bridge chip is a key part of the core. It is responsible for handling long-distance transmission and bandwidth data signal processing speed, and it must have strong adaptability to the ambient temperature.
Causes the transmission distance of the wireless bridge transmission microwave signal to be far from the following reasons:
1. Antenna
In fact, wireless bridges are also used for network signal coverage, but here we introduce the long-distance transmission mode of wireless bridges. Wireless bridges generally use directional antennas for long-distance bridging so that the direction of microwave transmission will be relatively concentrated; while WIFI devices use omni-directional antennas for signal coverage, and the transmission direction of microwave signals is transmitted in a 360-degree range; It can be seen that the concentration will definitely be farther than the divergent transmission distance.
2, receiver
When a wireless bridge is used as a long distance receiver, the receiving end will also use a wireless bridge with a directional antenna. At the same time, in order to ensure transmission stability, we usually use the same type of equipment for the bridge products that transmit and receive the two modes. Can greatly increase the reliability of the transmission. The receiving end of the WIFI signal is usually a device such as a mobile phone, a tablet computer, or a notebook. The antennas of these devices are generally built-in type and are very small and cannot receive the WIFI signals transmitted farther. Even if the mobile phone is connected to a WIFI signal, but because the signal is too weak to communicate properly, this is a problem that we often encounter. Obviously connecting to the WIFI network can not be seen on the Internet.
Some people may ask, even if the antenna of the mobile phone is weak, the signal tower of the mobile network is usually far away from us. Why can the mobile phone connect to mobile network signals such as 3G and 4G?
Here we must mention the microwave frequency used by the mobile tower.
As mentioned earlier, the microwave frequencies used for wireless bridges and WIFI overlay devices are 2.4G and 5.8G for civilian use. The microwave frequencies of these two channels do not need to be applied to the country when they are used, but the mobile network signal towers are launched. The 3G and 4G signals use frequencies from 1880 to 2655 MHz. These frequencies are lower than 2.4G and 5.8G, and the low-frequency microwave signals travel farther, so the mobile phone can receive these signals. However, the use of these frequency bands must be applied to the country and get a license before it can be used.
3, device chip
The chip determines the performance of the device. The wireless bridge is mainly used for mid-range and long-distance wireless network video transmission. Therefore, the wireless bridge chip focuses on factors such as transmission distance, transmission bandwidth, and anti-interference.