Abstract: An antenna system for use in an electronic security system transmitter or receiver having two or more loops. Each loop of the transmitter or receiver antenna system being individually connected to a splitter network in the transmitter and a combiner network in the receiver.

Abstract: The access window of a slot scanning data capturing system, or the gun of a hand held data capturing system, is fitted with a deactivation system of the type which is generally used to deactivate the tags or labels of an electronic article surveillance system so that the tag or label which is provided on the goods (to be purchased) is deactivated in the course of capturing the data at the point of sale.

Abstract: Security tags which bear a resonant circuit made of conductors on opposite sides of a dielectric are deactivated by applying to a tag sufficiently high RF power at the resonance frequency to produce breakthrough between opposed conductors. A tag presence alert signal is intentionally extended beyond the period of active tag presence detection. During high power operation, the system inhibits other nearby RF deactivating and electronic article surveillance systems. The RF transmissions of all these systems may also be slaved. The high power RF produced by the deactivating system is principally dissipated where it causes no undesirable heating effects.