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:
Dec. 14, 1999
Filed:
Oct. 04, 1996
Applicant:
Inventors:
Kazunari Kawahata, Kyoto, JP;
Kazuhisa Yamaki, Muko, JP;
Assignee:
Murata Manufacturing Co. Ltd, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q / ;
U.S. Cl.
CPC ...
3437 / ; 343702 ; 343829 ; 343873 ;
Abstract
A rectangular-prism-shaped base member is made from a dielectric material or a magnetic material. A ground electrode and a power supplying electrode are formed on one end face of the base member with a gap disposed therebetween. At least one through hole is formed between the end face and the opposing end face. A radiation electrode is formed on the inside surface of the through hole. One end of the radiation electrode is connected to the ground electrode, and the other end serves as an open end. The power supplying electrode and the radiation electrode are electromagnetically coupled through a capacitor formed at the gap.