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:
Sep. 10, 2013
Filed:
Jun. 17, 2011
Hiroki Ito, Tokyo, JP;
Tomokazu Fujiwara, Chiba, JP;
Hiroki Ito, Tokyo, JP;
Tomokazu Fujiwara, Chiba, JP;
Sony Corporation, Tokyo, JP;
Sony Mobile Communications Inc., Tokyo, JP;
Abstract
An antenna device includes a first antenna element resonating at a frequency in a first frequency band, a first matching circuit attaining matching between a first radio frequency circuit and the first antenna element, a second antenna element resonating at a frequency in a second frequency band, a second matching circuit attaining matching between a second radio frequency circuit and the second antenna element, a first band-pass circuit connected with the second antenna element and the second matching circuit to selectively conduct a signal in the second frequency band and a second band-pass circuit connected with the second antenna element and grounded to selectively conduct a signal in the first frequency band, wherein the second antenna element is utilized as a parasitic element for the first antenna element.