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:
Nov. 02, 2004
Filed:
Mar. 25, 2003
Masaki Shibata, Mie, JP;
Shi Luo, Mie, JP;
NGK Spark Plug Co., Ltd., Nagoya, JP;
Abstract
A dielectric chip antenna includes a substantially rectangular parallelepiped dielectric substrate, a feeding electrode, a fixation electrode, and two radiation electrodes. The feeding electrode is provided on one longitudinal end surface of the substrate, and is used to receive high frequency energy to be transmitted. The fixation electrode is provided on the opposite longitudinal end surface of the substrate and is used for fixation of the antenna to a printed circuit board. The two radiation electrodes are formed on a peripheral surface of the substrate so as to extend longitudinally while spirally surrounding the substrate. The base ends of the radiation electrodes are connected to the feeding electrode. The two radiation electrodes are formed symmetrically with respect to a horizontal plane passing through a center axis of the substrate so that the two radiation electrodes are of identical patterns on the upper and lower surfaces of the substrate.