The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 1996
Filed:
Nov. 18, 1994
Toshihiko Nakazawa, Suwa, JP;
Akihiro Fukuzawa, Suwa, JP;
Seiko Epson Corporation, Tokyo-to, JP;
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.