An Introduction to PIM
In recent years passive intermodulation (PIM) has become a major concern for wireless service providers and those responsible for building and maintaining wireless networks. The increase in awareness around PIM comes with the increasing complexity of how spectrum is utilized.
The push to increase spectral efficiency in wireless networks by utilizing technologies like higher order modulation, channel aggregation and MIMO makes keeping an eye on sources of PIM in current and next generation wireless systems increasingly important. PIM in antennas, circuits and transmission lines can place limits on the performance of wireless communication systems but also sensor, radar and navigation systems.
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