Antenna coil

Details Antenna coil Antenna coil

1997-03-05

1999-04-20

Wong, Don

Communications: radio wave antennas

Antennas

Loop type

343895, 343897, H01Q 2100

Patent

active

058961119

ABSTRACT:
An antenna coil, in particular for a contactless smart card, includes coil turns formed of thin conductor tracks having first and second ends. The first end of a respective one of the conductor tracks is electrically conductively connected to the second end of an adjacent one of the conductor tracks. The conductor tracks include first and last conductor tracks, and the first end of the first conductor track and the second end of the last conductor track form coil connections. The conductor tracks are disposed in parallel on a flexible, non-conductive carrier strip. The carrier strip has bends and forms a polygon containing the connected ends of the conductor tracks. The bends are guided through approximately 180.degree., and the coil turns lie approximately in the same plane.

REFERENCES:
patent: 1640929 (1927-08-01), Farkouh
patent: 1689337 (1928-10-01), Haddock
patent: 3414902 (1968-12-01), Shaw
patent: 4987424 (1991-01-01), Tamura et al.
Patent Abstracts of Japan No. 60057703 (Yoshikazu), dated Apr. 3, 1985.
Patent Abstracts of Japan No. 57186802 (Tadayoshi), dated Nov. 17, 1982.

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