Crosstalk is primarily caused by coupling between different signals transmitted through adjacent parallel cables, resulting from electrostatic or electromagnetic effects. The couplings are characterized by their respective mechanisms and the specific type of interference they produce:
- Capacitive Coupling (Electrostatic Coupling): This occurs when an electrostatic field generated by current flowing through a wire in close proximity to another parallel wire induces an interference signal in the latter. The interference is known as capacitive crosstalk and arises due to the virtual capacitance formed between the wires.
- Inductive Coupling (Electromagnetic Coupling): This occurs when a dynamically changing magnetic field generated by current in one wire, positioned near another parallel wire, induces an interference signal in that wire through mutual inductance. The resulting interference is referred to as inductive crosstalk.
Read More: Classification of Crosstalk