Communications: radio wave antennas – Antennas – Loop type
Patent
1990-05-14
1991-08-13
Wimer, Michael C.
Communications: radio wave antennas
Antennas
Loop type
343789, 343769, H01Q 700
Patent
active
050399969
ABSTRACT:
A method of placing an electronic responder of an electromagnetic interrogation system or an antenna coil of an electromagnetic interrogator device in or near an electrically conductive article. An opening is made in the article, which is larger than the responder or antenna coil, and the responder or the antenna coil is mounted in registry with said opening. There is also provided a slit in the article, extending from the opening, said slit interrupting extraneous circular currents.
REFERENCES:
patent: 1847872 (1932-03-01), Hand
patent: 2343306 (1944-03-01), Lear
patent: 2607894 (1952-08-01), Johnson
patent: 3568206 (1971-03-01), Sisson et al.
patent: 4196418 (1980-04-01), Kip et al.
patent: 4514693 (1985-04-01), Meador
Fleit Jacobson
Le Hoang-anh
N.V. Nederlandsche Apparatenfabriek Nedap
Wimer Michael C.
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