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:
Jul. 08, 2003
Filed:
Nov. 07, 2001
Haruyama shinichi, Tsurumi-Ku, JP;
Abstract
Disclosed is a radio communication terminal having an antenna device, which is capable of feeding power to an internal antenna using a simple configuration while achieving a reduction in SAR, by using a dipole antenna as the internal antenna. In the antenna device, a power feeding circuit and a primary radiation element are mounted to a printed circuit board (PCB). Transmission power from a transmitting/receiving circuit is fed to the primary radiation element via a coaxial cable by the power feeding circuit. The dipole antenna is attached to an inner surface, outer surface, or recessed portion of the case of the terminal in such a fashion that it faces the primary radiation element while being spaced apart from the primary radiation element. A speaker is attached to a surface of the PCB opposite to the PCB surface to which the primary radiation element is mounted. Although the primary radiation element and the dipole antenna are mechanically spaced apart from each other, they are capacitance-coupled or magnetically coupled together, thus eliminating the need for a power feeding line. The PCB serves to shield electromagnetic waves radiated from the antenna device toward the head of the user.