Multiple loop antenna

Details Multiple loop antenna Multiple loop antenna

1987-08-31

1989-10-03

Hille, Rolf

Communications: radio wave antennas

Antennas

High frequency type loops

343842, 343867, 340572, H01Q 704, G08B 1322

Patent

active

048720186

ABSTRACT:
A multiple loop antenna particularly suitable for use with an electronic article surveillance security system for detecting the presence of a resonant tag employs first and second shielded twisted loops lying in a common plane and having portions thereof interleaves with each other. The loops are electrically coupled to each other and to a common transmitter or receiver. The loops may be fabricated from coaxial cable to achieve the shielding function at low cost while providing design flexibility.

REFERENCES:
patent: 3390394 (1968-06-01), Glimvall
patent: 4251808 (1981-02-01), Lichtblau
patent: 4260990 (1981-04-01), Lichtblau
patent: 4334227 (1982-06-01), Marks
patent: 4373163 (1983-02-01), Vandebult
patent: 4633250 (1986-12-01), Anderson et al.
patent: 4679046 (1987-07-01), Curtis et al.

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