Title:
FREQUENCY SHARING DIRECTIONAL ANTENNA
Document Type and Number:
Japanese Patent JP2014045278
Kind Code:
A
Abstract:
To provide a frequency sharing directional antenna having the same sector directivity in a plurality of different operation frequency bands, with a simple configuration.
The frequency sharing directional antenna includes a radiator 110 and two reflectors 101, 103, and the reflector 103 is configured to have a frequency selection function. The reflector 103 having a frequency selection function is a reflector exhibiting conductivity in a specific frequency band out of a plurality of frequency bands, but does not exhibit conductivity in other frequency bands. The reflector 103 exhibiting conductivity in high frequency bands is disposed between the radiator 110 and the reflector 101 exhibiting conductivity in low frequency bands.
Inventors:
IHARA TAISUKE
CHO KEIZO
CHO KEIZO
Application Number:
JP2012185677A
Publication Date:
March 13, 2014
Filing Date:
August 24, 2012
Export Citation:
Assignee:
NTT DOCOMO INC
International Classes:
H01Q15/14; H01Q19/185
Attorney, Agent or Firm:
Naoki Nakao
Yukio Nakamura
Yoshimura Munehiro
Yukio Nakamura
Yoshimura Munehiro