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:
Feb. 28, 2012
Filed:
Feb. 15, 2007
Akio Kuramoto, Tokyo, JP;
Takuji Mochizuki, Kanagawa, JP;
Akio Kuramoto, Tokyo, JP;
Takuji Mochizuki, Kanagawa, JP;
NEC Corporation, Tokyo, JP;
Renesas Electronics Corporation, Kanagawa, JP;
Abstract
A small-size wide-band antenna () includes a radiation element formed on a dielectric substrate () and a coaxial cable () as power supply unit for supplying dipole potential to the radiating element. The radiation element includes a ground potential unit to which ground potential is supplied via an external conductor () of the coaxial cable and an opposite-pole potential unit to which a potential forming a pair with the ground potential is supplied via a center conductor () of the coaxial cable. The ground potential unit includes a pair of conductors () formed in a tapered shape on the front and rear surfaces of the dielectric substrate and mutually capacitively coupled. The opposite-pole potential unit includes a pair of conductors () formed in a tapered shape on the front and rear surfaces of the dielectric substrate and mutually capacitively coupled. Each of the ground potential unit and opposite-pole potential unit has a power supply point at a tapered apex of the conductor (). The small-size wide-band antenna () further includes a stub conductor () as an impedance matching unit for matching the impedance between the radiation element and power supply unit.