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. 09, 2005
Filed:
Oct. 29, 2002
Jinichi Inoue, Warabi, JP;
Jinichi Inoue, Warabi, JP;
Nippon Antena Kabushiki Kaisha, Tokyo, JP;
Abstract
An object of the present invention is a small composite antenna that is capable of operating in a plurality of different frequency bands. A first antennaconstituting a GPS circularly polarized loop antenna is formed on a dielectric substrate. A second antennaconstituting an ETC square patch antenna is formed on substantially the same axis as the first antenna. An earth pattern is formed in the underside of the dielectric substrate, and a recess in whose bottom face an earth pattern is formed so as to lie opposite the second antennais provided. An arc-shaped feed patternis electromagnetically coupled to the first antennaso as to supply electricity thereto, whereby this antenna is made to operate as a right-handed circularly polarized antenna. Electricity is supplied by a coaxial cable to the second antennato cause same to operate as a right-handed circularly polarized antenna.