Definition: The word "antivibrator" refers to a device or mechanism designed for controlling, filtering or manipulating electromagnetic fields. It's used in electronic circuits to shield electrical signals from external sources like radio waves, ultraviolet light, or microwaves. Definition: An antivibrator is a circuit element that filters out unwanted electromagnetic energy at the receiver end of an antenna array. This prevents interference from other transmitters or ground radiation. Antivibrators can be either passive or active depending on whether they operate in the receiving or transmitting mode, respectively.