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:
Apr. 16, 2013
Filed:
Aug. 30, 2010
Naoki Iso, Hitachi, JP;
Haruyuki Watanabe, Hitachi, JP;
Morihiko Ikegaya, Kasumigaura, JP;
Tomoyuki Ogawa, Hitachi, JP;
Naoki Iso, Hitachi, JP;
Haruyuki Watanabe, Hitachi, JP;
Morihiko Ikegaya, Kasumigaura, JP;
Tomoyuki Ogawa, Hitachi, JP;
Hitachi Cable, Ltd., Tokyo, JP;
Abstract
There is provided a composite antenna device for responding to waves in a plurality of radio frequency bands, including: a sheet of conductor plate; a first antenna provided on the sheet of conductor plate for responding to a linearly-polarized wave in at least one radio frequency band; and a second antenna provided on the sheet of conductor plate for responding to a circularly-polarized wave in a radio frequency band that is different from the at least one radio frequency band, wherein the first antenna has a ground portion, the second antenna is formed in an area in the ground portion, and each of the first antenna and the second antenna has a feeding point.