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:
Aug. 02, 2005
Filed:
Dec. 27, 2002
Hideo Ito, Machida, JP;
Kiyoshi Egawa, Minato-ku, JP;
Hideo Ito, Machida, JP;
Kiyoshi Egawa, Minato-ku, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The unbalanced feeding antenna elementis fed power from one end and placed on the upper surface of the circuit substrate. The passive elementhas open both ends, is set to a length corresponding to a predetermined frequency, placed in substantially parallel to the unbalanced feeding elementplaced on the circuit substrateat a distance of approximately 1/10 or less of a wavelength at a frequency used for transmission/reception. This suppresses the antenna current flowing into the circuit substrateto a minimum level and makes radiation from the passive elementdominant compared to radiation from the circuit substrate. This makes it possible to suppress a reduction in the antenna gain caused by the human body when the user uses the communication terminal apparatus.