Inductive coupling

In telecommunication, inductive coupling is the transfer of energy from one circuit to another by virtue of the mutual inductance between the circuits.

Note 1: Inductive coupling may be deliberate and desired (as in an antenna coupler[?]) or may be undesired (as in power line inductive coupling into telephone lines).

Note 2: Capacitive coupling favors transfer of higher frequency components, whereas inductive coupling favors transfer of lower frequency components.

Source: from Federal Standard 1037C and from MIL-STD-188