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:
Jan. 18, 2005
Filed:
Nov. 14, 2002
Ryuzo Noda, Miyazaki, JP;
Taiga Matsushita, Tokyo, JP;
Yuichi Iwakata, Warabi, JP;
Lintec Corporation, , JP;
C.D.N. Corporation, , JP;
Abstract
A loop antenna is constructed by bending a linear conductor so that it forms concavo-convex portions within an antenna plane. As an example, the shape of the loop antenna comprises a long straight line portion (LP) which elongates substantially straight in the direction of the arrow X, a short straight line portion (TP) which is at a predetermined angle (θ) with respect to the long straight line portion (LP) and shorter than the long straight line portion (LP), and a short straight line portion (TP) which is at a predetermined angle (θ) with respect to the short straight line portion (TP) and at a predetermined angle (θ) with respect to the long straight line portion (LP) and has approximately same length as the short straight line portion (TP), wherein an acute angle portion (TG) which is formed by the short straight line portions (TP) and (TP), and acute angle portions (TGTGand TG) each having approximately same shape as the acute angle portion (TG) are succeeding in the opposite direction of the arrow X to the vicinity of a feeding point (P).