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:
Apr. 06, 1999
Filed:
Apr. 01, 1997
Seiji Kanba, Otsu, JP;
Kenji Asakura, Shigu-ken, JP;
Tsuyoshi Suesada, Omihachiman, JP;
Teruhisa Tsuru, Kameoka, JP;
Harufumi Mandai, Takatsuki, JP;
Abstract
A chip antenna in which desired antenna characteristics can be obtained without restricting the type of at least one of a dielectric material and a magnetic material used for a base member of the antenna, as well as the type of metal material used for a conductor, or without limiting the sintering conditions of the above-described materials. The chip antenna includes a rectangular-prism-shaped base member having a mounting surface. A conductor, e.g. silver, is spirally wound inside the base member. A feeding terminal is formed over surfaces of the base member so as to feed power to the conductor. One end of the conductor is extended to a surface of the base member to form a feeding section, which is connected to the feeding terminal. The other end of the conductor serves as a free end within the base member. The base member is produced by laminating mixture layers made from a mixture of glass essentially consisting of borosilicate having a softening point of approximately 700.degree. C. and ceramic (relative dielectric constant: 60) essentially consisting of barium oxide, neodymium oxide and titanium oxide having a sintering temperature of approximately 1300.degree. C.