What We Should Know About PIM of Coaxial Connectors?

With radio frequency signal transmission, reception, and operation-related wireless, radio frequency, high speed data, research and sensing applications are more diverse, and there are more and more types of coaxial cable assemblies. One of the most important purposes of coaxial cable assemblies is in testing and SMA connector measurement and high-precision systems. These applications typically need to design and manufacture coaxial cable assemblies with higher performance standards, and in specific applications, these coaxial cable assemblies need to have more advantageous additional functions. The following is a brief introduction to the various coaxial connectors performance standards and functions that often need in high precision applications.

About the primary performance PIM value (passive intermodulation) in the RF connector, you may just know how to have this performance value, but what is used, if bad will affect the performance of RF connector. How much losses will be made to the device signal coaxial connectors transmission.

PIM is interference generated by two or more SMA connector frequencies in passive circuits, which can be consistent with the uplink reception frequency of the wireless network. If the frequency is consistent, PIM will weaken network performance. This is especially true for 4g / LTE networks because 4G / LTE network is more susceptible to PIM effects than traditional 2G and 3G technologies.

The PIM value (passive intermodulation) is a signal mixing input to the passive device in two or more different frequencies, due to the nonlinearity of the connection point or material, and the distortion signal generated.

The generation of interference is related to the local downstream SMA connector frequency point, which coaxial connectors can cause the uplink band noise to rise when multiple system shared infrastructure. The impact of PIM on network quality is very serious, especially UMTS or LTE, a broadband system. PIM interference can result in a decrease in receiver, increased drop, and increase the access failure, premature switching, reduce data transfer rate, and reduce the coverage and coaxial connectors capacity of the system.

The 4G / LTE network has triggered new PIM testing and technology upgrades to control the serious impact of PIM on cost. The following methods can help you prevent PIM interference

1.PIM calculation

2. RF path calculator

3. PIM base station review

4.4.3-10 Connector Ecosystem

ZOMWAVE has been struggling with SMA connector PIM for a long time. We have developed strategic and innovative solutions to eliminate it anywhere. This is what we want to pass: PIM is preventable.