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In linguistics, code-switching occurs when a speaker alternates between two or more languages, or language varieties, in the context of a single conversation.peakers form and establish a pidgin language when two or more speakers who do not speak a common language form an intermediate, third language. On the other hand, speakers practice code-switching when they are each fluent in both languages.
PIM is not limited to the wired transmission path but can also happen beyond the antenna. The effect is also known as rusty bolt PIM. In such a circumstance, the passive intermodulation occurs after the signals have left the transmitter antenna with the resultant intermodulation reflecting back into the receiver.