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. 04, 2006
Filed:
Nov. 28, 2003
Yasumasa Harihara, Tokyo, JP;
Yasumasa Harihara, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A chip antenna has pattern antennas A, A' which are formed on a plurality of layers of a base member of a stacked structure and of which at least parts of their patterns are not overlapping with each other in the stacked direction, and a feeding terminalwhich is formed on a surface of the base member and which is connected to the pattern antennas A, A′. By deleting an overlap with each other in the stacked direction between their patterns of pattern antennas A, A′, one pattern antenna can be adjusted to have an optimized resonant frequency without influencing frequency characteristics of another pattern antenna. The pattern antenna A′ has a first area of a rectangular shape and a second area elongating continuously from the first area. Upon adjusting a length of an arm in the direction that the second area elongates in the first area and a length of the second area, a desirable resonant waveform can be obtained