Magnetic antenna

Details Magnetic antenna Magnetic antenna

1988-02-10

1989-12-26

Hille, Rolf

Communications: radio wave antennas

Antennas

High frequency type loops

343841, H01Q 704

Patent

active

048901156

ABSTRACT:
A magnetic antenna particularly usable for deactivating electronic article surveillance tags that are attached to articles of merchandise to prevent unauthorized removal from a protected area. The antenna comprises a driven element in the form of a transmitting loop, preferably a pair of loops driven in opposite phase, and shield grids disposed on opposite sides of the driven elements. The shield grids serve to prevent electric field radiation from the driven element from propagating past the shield, but permit the passage of magnetic field radiation therethrough. The antenna may also be used at a protected exit to detect the presence of a tag.

REFERENCES:
patent: 2419480 (1947-04-01), Bryan et al.
patent: 2442310 (1948-05-01), Polydoroff
patent: 4633250 (1986-12-01), Anderson et al.

Affiliated with

Also associated with

Rating

Magnetic antenna does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic antenna, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic antenna will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1579226