Title:
Antenna device
Document Type and Number:
Japanese Patent JP6365046
Kind Code:
B2
Abstract:
An antenna device includes a ground; a monopole antenna including a first section running from a feeding point along the ground, a second section running in a direction away from the ground, and a third section running along the ground, the monopole antenna having a length corresponding to 1/4 of a wavelength at a first resonance frequency; a parasitic element including a first section whose end is connected to the ground in the vicinity of the end of the first section of the monopole antenna and that runs in a direction away from the ground, and a second section, the parasitic element having a length corresponding to 1/4 of a wavelength at a second resonance frequency; and a dipole antenna provided along the third section of the monopole antenna and the parasitic element, the dipole antenna having a length corresponding to 1/2 of a wavelength at a third resonance frequency.
Inventors:
Youga Koga
Yoko Egawa
Yoko Egawa
Application Number:
JP2014144999A
Publication Date:
August 01, 2018
Filing Date:
July 15, 2014
Export Citation:
Assignee:
富士通株式会社
International Classes:
H01Q5/385; H01Q9/04
Domestic Patent References:
| JP2016506636A | ||||
| JP2006054639A | ||||
| JP2004064282A | ||||
| JP2010232820A |
Foreign References:
| US20100141536 | ||||
| US20080309563 | ||||
| US20130044030 | ||||
| US20110227805 | ||||
| WO2009154417A2 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Takao Kato
Tadahiko Ito
Takao Kato