Main indicators of RF connector

In the selection of RF coaxial connector when there are the following indicators can be referred:

1. frequency range

Refers to the working frequency range of the connector, generally the wider the scope of application of the connector. The design structure of high-frequency RF connectors is more complex, and special structures and materials are generally used to ensure their performance in the process of high-frequency signal transmission. The design structure of the low-frequency RF connector is relatively simple, and the regular structure and materials can be generally used.

2. insertion loss

Refers to the signal loss caused by the connector during signal transmission. Generally, the smaller the connector, the higher the signal transmission efficiency. Due to the special nature of high-frequency signal transmission, the insertion loss of high-frequency RF connectors is usually lower than that of low-frequency RF connectors. Of course, it also means that the price of high-frequency connectors is more expensive.

3. impedance matching

Refers to the degree of matching between the internal impedance of the connector and the external circuit. The better the impedance matching performance, the smaller the impact of the connector on signal transmission, and the higher the stability and reliability of signal transmission. Standard RF connector impedance is mostly50Ωor75Ω.

4. plug life

It refers to how many times the connector can be plugged and unplugged under normal use conditions without affecting its performance and reliability.

5. reliability

Reliability refers to the ability of the connector to maintain a stable signal transmission and connection state under normal use conditions.SMAThe reliability of the connector depends on the design and manufacturing quality of the connector, mainly related to the internal structure of the connector, contact area, material, contact pressure and other factors. Generally speaking,SMAThe connector has high reliability, can work in harsh environments, and maintains a stable signal transmission and connection state. High-endSMAThe connector has higher reliability and longer service life, which can meet the needs of some high-end application scenarios.

The above indicators need to be considered comprehensively when evaluating the selection of RF connectors, and different application scenarios need to focus on different indicators. Generally speaking, after the actual use measurement verification, the RF connector is selected according to the comparison of the measured results to ensure that the connector can meet the actual needs and maintain stability and reliability during long-term use.