What is PIM, and why is it a problem?

Passive Intermodulation (PIM) occurs when two or more signals at different frequencies interact in a passive, non-linear connection, generating unwanted intermodulation products. These additional signals can interfere with the primary signals, resulting in signal loss, dropped calls, and increased network downtime.

External PIM refers to PIM disturbances that occur outside the network equipment itself, often due to signal interference from external metal objects near antennas or cables. This type of PIM can be particularly challenging to identify and address, as the source of the interference is outside the controlled telecommunications infrastructure.

Solving PIM with FIMO's PIM Shield We offer solutions that effectively reduce PIM and improve network performance. This is where FIMO's PIM Shield portfolio becomes a valuable resource. FIMO, a leading player in telecommunications components, has developed a specialized product range designed to address PIM challenges efficiently, allowing the network to achieve better stability and performance.

Troubleshooting PIM is a critical but often time-consuming process. It primarily involves identifying the source of the PIM disturbances, whether they occur internally in network components such as connectors, cables, or antennas, or externally in the surroundings, such as metal objects near base stations. The PIM test probe is used in combination with other test and measurement equipment to accurately identify external PIM sources in the field.

Once the source of PIM is identified, the next step is to implement shielding solutions that prevent further disturbances and protect the network from new PIM generation. Here, we use FIMO's PIM Shield product portfolio as a reliable resource to guard against noise and ensure optimal network performance.