PIM value
It is full name is Passive Intermodulation. Regarding to the main performance PIM value in the RF related products, you may only know there is this performance value. However, what is its usage and what it will affect on the performance of our RF products. How much loss is there in the signal transmission of the device. Today let us have a talk about what is the PIM?
The PIM value (Passive Intermodulation) is a distorted signal generated by mixing two or more different frequency signals into a passive device due to the nonlinearity of the connection point or material.
The generation of interference is related to the local downlink frequency, which can lead to an increase in uplink frequency noise when multiple systems share infrastructure. The impact of PIM on network quality is very serious, especially for broadband systems such as UMTS or LTE. PIM interference can lead to reduced receiver sensitivity, increased dropped call rate, increased access failure rate, premature switching, reduced data transmission rate, and reduced system coverage and capacity.
Any component in the RF path can cause PIM interference, including antennas, TMAs, diplexers, duplexers, lightning arresters, cables, and connectors. In addition, when the antenna system is radiated with high power, loose mechanical connections and rusted surfaces can also cause PIM interference.
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