Ferrite Antenna

Details Ferrite Antenna Ferrite Antenna

1994-11-18

1996-10-01

Hajec, Donald T.

Communications: radio wave antennas

Antennas

Including magnetic material

343788, H01Q 100, H01Q 708

Patent

active

055614388

ABSTRACT:
A ferrite antenna is disclosed. The antenna includes a board on which a ferrite component is mounted. The board includes a plurality of slots and a conductive pattern extending between two of the slots. First and second metal bands are wound around the ferrite component and inserted into the slots. The metal bands are coupled together by the conductive pattern to form a coil. Thus, the interval between adjacent bands can be more accurately set and the antenna can be more easily fabricated. In another embodiment, a metal band partially encloses the ferrite component and covers an open area between the ferrite component and one end of the metal band. The sensitivity of the antenna is thus increased beyond the upper limit of a regular ferrite antenna. In still another embodiment, conductive patterns are formed on the periphery of the board and coupled to the metal bands to improve the directional sensitivity of the antenna.

REFERENCES:
patent: 3594805 (1979-07-01), Chardin
patent: 4777465 (1988-10-01), Meinel
patent: 4805232 (1989-02-01), Ma
patent: 4814782 (1989-03-01), Chai
patent: 4839659 (1989-06-01), Stern et al.
patent: 5014079 (1991-05-01), King
patent: 5164737 (1992-11-01), Murray et al.

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