Abstract: A fixed magnetic contact wireless transceiver including a two-way transceiver element adapted to be operable for two-way wireless communication between a fixed magnetic contact wireless transceiver component and an intrusion alarm system, an antenna facilitating the two-way wireless communication between the fixed magnetic contact wireless transceiver component and the intrusion alarm system, and an antenna ground reference plane, opposite the antenna, wherein the antenna includes a substrate, a top surface of the substrate being coated with a gold plated copper substrate coating, the coating having a gap formed therein, and half via holes formed in a perimeter of the antenna, the half via holes being coated with gold plated copper half via hole coatings which form a continuum with the gold plated copper substrate coating.

Abstract: A wireless door intrusion detection assembly including a magnet component installed on a door, and a fixed magnetic contact wireless transceiver component installed on a door frame corresponding to the door, opposite the magnet component, the fixed magnetic contact wireless transceiver component including a two-way transceiver element operable for two-way wireless communication between the fixed magnetic contact wireless transceiver component and an intrusion alarm system, an antenna facilitating the two-way wireless communication between the fixed magnetic contact wireless transceiver component and the intrusion alarm system, and an antenna ground reference plane, opposite the antenna.

Abstract: A fixed magnetic contact wireless transceiver including a two-way transceiver element adapted to be operable for two-way wireless communication between a fixed magnetic contact wireless transceiver component and an intrusion alarm system, an antenna facilitating the two-way wireless communication between the fixed magnetic contact wireless transceiver component and the intrusion alarm system, and an antenna ground reference plane, opposite the antenna, wherein the antenna includes a substrate, a top surface of the substrate being coated with a gold plated copper substrate coating, the coating having a gap formed therein, and half via holes formed in a perimeter of the antenna, the half via holes being coated with gold plated copper half via hole coatings which form a continuum with the gold plated copper substrate coating.

Abstract: A wireless door intrusion detection assembly including a magnet component installed on a door, and a fixed magnetic contact wireless transceiver component installed on a door frame corresponding to the door, opposite the magnet component, the fixed magnetic contact wireless transceiver component including a two-way transceiver element operable for two-way wireless communication between the fixed magnetic contact wireless transceiver component and an intrusion alarm system, an antenna facilitating the two-way wireless communication between the fixed magnetic contact wireless transceiver component and the intrusion alarm system, and an antenna ground reference plane, opposite the antenna.

Abstract: This invention discloses a microwave transceiver suitable for use in an intrusion detection system including a microwave radiation generator, a printed antenna on a first side of a printed circuit board for radiating the microwave radiation generated by the microwave generator, and a ground plane on a second side of the printed circuit board and having an outer edge which is generally coextensive with an outer edge of the printed antenna.