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, 2010
Filed:
Sep. 06, 2006
Daigo Imano, Miyagi, JP;
Hironori Kikuchi, Miyagi, JP;
Daigo Imano, Miyagi, JP;
Hironori Kikuchi, Miyagi, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The present invention provides an antenna apparatus for a wireless unit, the antenna apparatus exhibiting a reduced specific absorption rate (SAR) without an additional component for reducing the SAR, which is the amount of energy of an electromagnetic wave absorbed by a human body. The antenna apparatus comprises a boardserving as a ground plate of an antenna, a first antenna elementtransmitting and receiving an electromagnetic wave in a first frequency band and provided on the boardthrough the first feeder, and a second antenna elementtransmitting and receiving an electromagnetic wave in a second frequency band and provided on the boardthrough the first feeder, wherein the total of an electrical length between the first and second feedersand, an electrical length of the first antenna element, and an electrical length of the second antenna elementis larger than a half wavelength of the first frequency band and equal to or smaller than one wavelength of the first frequency band.