What is wireless transmission: Wireless transmission refers to a method of transmitting data through radio waves, infrared rays, lasers, etc. It is a technology that does not require physical connection to transmit information. It is widely used in communications, networks and electronic devices, including (WI-FI, Bluetooth, Sub-1G, satellites, etc.). In the transmission environment, due to the characteristics of the environment and the module, there will be different differences in actual use. Let us describe these factors in detail below.

Transmit power:

Transmit power is one of the important factors affecting the signal strength of wireless module transmission. It describes the strength of the signal emitted by the wireless module. Generally speaking, the greater the transmission power of the wireless module, the wider the transmission range, so that the signal can overcome the attenuation and interference during the transmission process to a certain extent, thereby achieving longer-distance transmission. However, the increase in power will also lead to some potential hazards and higher power consumption. In addition, in different countries and regions, there are restrictions on the frequency and transmission power of radio. Therefore, during use, we need to use modules with different power and frequency points according to different countries and regions to meet functional requirements.

Receive sensitivity:

Receiving sensitivity refers to the indicator of the module's ability to receive weak signals. The higher the module's receiving sensitivity, the module can receive effective signals from farther away, which in turn affects the distance between the module and the wireless communication before the module. When we choose When choosing modules, we choose some modules with high sensitivity, which can make up for the signal attenuation problem caused by low module transmission power or environmental interference within a certain range.

Frequency selection:

Signal transmission is based on fundamental waves of different frequencies. The frequency of the signal has a significant impact on wireless communication. Generally speaking, the lower the frequency, the stronger the penetration ability of the transmission and the farther the transmission distance. However, the data transmission rate is relatively low. The higher the frequency, the weaker the transmission penetration ability, but the data transmission rate is relatively high. In different environments we need to choose the appropriate frequency for transmission.

Antenna performance:

The wireless module transmits the signal inside the transmitter through the antenna, so the performance of the antenna plays a crucial role in the transmission distance. A high-gain antenna can effectively concentrate the energy in the signal and increase the transmission distance. In addition, there are different types of antennas, such as (omnidirectional antennas and directional antennas). They are different in coverage. Omnidirectional antennas can provide 360° signal coverage, while directional antennas can only cover a certain direction. For signal coverage, the range of a directional antenna in a certain direction is farther than that of an omnidirectional antenna.

Debugging method:

The debugging method is a different type of signal processing method. Different types of debugging methods have different characteristics. The anti-interference ability and transmission efficiency have a key impact on the signal transmission process, such as (signals using spread spectrum modulation Stronger anti-interference ability).

Environmental factors:

The transmission of wireless signals is carried out in space, and it is inevitable that obstacles, climate, terrain, air humidity, etc. in the space will cause the signal to attenuate during the transmission process. In some cities, the signal is often affected by various factors, resulting in a smaller transmission signal range. Therefore, when choosing a wireless module, we need to consider environmental factors so that the conditions of use can be met.

There are many factors that affect the signal transmission range of the wireless module. In practical applications, if we need to communicate in a larger range, we need to choose different modules for communication according to the actual environment.