Which antenna is used for 433 MHz module

The 433 MHz module has low power consumption and powerful functions. It is widely used in robot control, smart home, wireless meter reading and other fields. The product is industrial-grade design and is suitable for outdoor harsh environments. When the module finds that the distance is not enough during use, it is usually recommended to select a suitable antenna to achieve the purpose of increasing the communication distance. So what kind of antenna is good for 433 MHz module, and what matters should be paid attention to when installing the antenna?

The antenna is an important part of the communication system. Its performance directly affects the indicators of the communication system. When choosing an antenna, you must pay attention to its performance. In addition, the gain of the antenna is one of the important indicators of the antenna. It is the directivity and efficiency. The product of is the performance of the size of the antenna radiated or received.

Which antenna is used for 433 MHz module

Generally, the commonly used wireless module requires an antenna impedance of 50 ohms. The 433 MHz module can use general 433MHz spring antennas, elbow/straight rod antennas, sucker antennas, etc. These antennas are dedicated antennas designed for 433MHz wireless communication systems. The standing wave ratio has good performance, ingenious structure, convenient installation, stable performance, and good anti-vibration and aging ability. Users can choose antennas according to their own application environment. In order to keep the module in the best working condition, if you really don't know what kind of antenna to choose, it is best to consult the manufacturer before buying.

433 MHz module antenna installation precautions

1. Connect the module to the spring antenna: hook the hook-like part of the spring antenna to the ANT pin of the module, and weld it to complete the connection with the spring antenna.

2. Connect the module to the rod antenna: solder the end of the SMA extension cord to the ANT and GND pins of the wireless module, and then connect the other end of the SMA extension cord to the rod antenna.
3. Connect the module and the sucker antenna: first solder the end of the SMA extension cord to the ANT and GND pins of the wireless module, and connect the sucker antenna at the other end of the SMA extension cord.

Note: In order to ensure the best communication distance of the module, the antenna should not be close to the ground surface as much as possible during the use of the antenna, and the periphery should be kept away from obstacles; On metal objects.

Through the above introduction, everyone should know what kind of antenna to choose. The 433 MHz module should use antennas with the same frequency band. The higher the antenna gain, the longer the communication distance. The user can connect the module and the antenna according to the above connection method. In order to ensure the best communication distance, please refer to the precautions.