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. 24, 2020
Filed:
Apr. 18, 2019
Unictron Technologies Corporation, Hsin-Chu, TW;
Chih-Shen Chou, Miaoli County, TW;
Tsung-Shou Yeh, Hsinchu County, TW;
Hsiang-Cheng Yang, Taoyuan, TW;
Ching-Ling Lu, Hsinchu, TW;
Unictron Technologies Corporation, Hsin-Chu, TW;
Abstract
The present invention is a multi-frequency antenna device comprising a first electrode layer and a second electrode layer disposed on a first surface of an insulating substrate, wherein the second electrode layer is located outside periphery of the first electrode layer. A third electrode layer is disposed on a second surface of the insulating substrate, and the first surface and the second surface are separated by the insulating substrate. A conductive element penetrates the insulating substrate and is connected to the first electrode layer. A groove is disposed on a side surface and/or the second surface of the insulating substrate, and a projection of the groove on the first surface completely or partially overlaps the second electrode layer. An effective dielectric constant between the second electrode layer and the third electrode layer is changed through arrangement of the groove to adjust a resonance frequency generated by the second electrode layer.