How is the RF coaxial connector graded?

RF coaxial connectors are usuallyRF Connectordivided into three levels

Definition: Class 0-A specific type of precision manufactured connector used to measure the reflection coefficient of Class 1 and Class 2 connectors. The error caused by the measurement result is negligible. RF coaxial connector in the main requirement is high strength and resistance to harsh environment when the selection of stainless steel shell; in the need to shell has good electrical contact performance and corrosion resistance to environmental performance, the selection of copper alloy base material and gold-plated shell. 3. test results RF coaxial connector test items include contact resistance, voltage standing wave ratio, insertion loss and vibration. The contact resistance is tested by the four-point method, which conforms to the IEC test standard, and the voltage standing wave ratio and insertion loss are tested on the network analyzer by the sweep frequency method.

Class 1.1-a connector that specifies the limit value of the reflection coefficient according to the frequency change. The dimensional tolerance specified is usually not stricter than that of the corresponding Class 2 connector, but when it is necessary to ensure that the connector meets the requirements of the reflection coefficient, the manufacturer is responsible for choosing a stricter tolerance.

Class 2.2-A connector manufactured with a wide range of allowable dimensional deviations (tolerances), but still capable of guaranteeing the minimum specified performance and fit. The contact resistance test results of the inner conductor contact pair and the outer conductor contact pair of the RF coaxial connector interface are shown in the following table. As can be seen from the table, the contact resistance values are in the specified range.

3. All elastic elements of RF coaxial connector are made of beryllium bronze material with good elastic performance. After processing, shaping (closing or expansion) is carried out, and then aging treatment is carried out to enhance its elasticity. The insulation material is selected high-frequency performance and processing performance are good polytetrafluoroethylene. The connector housing material can be designed in two ways as required.

4. Test the contact resistance of the inner conductor contact pair and the outer conductor contact pair of the RF coaxial connector interface. As can be seen from the table, the contact resistance values are in the specified range.

5. All elastic elements of RF coaxial connector are made of beryllium bronze material with good elastic performance. After processing, shaping (closing or expansion) is carried out, and then aging treatment is carried out to enhance its elasticity. RF coaxial connector material: shell: brass nickel-plated pin: brass hard gold-plated socket: beryllium bronze hard gold-plated insulator.