Title:
PARABOLIC ANTENNA APPARATUS
Document Type and Number:
Japanese Patent JP2006081041
Kind Code:
A
Abstract:
To provide the joining structure of a radio wave reflector in which the number of parts is small, assembling workability is satisfactory, rigidity against wind pressure and anti-earthquake performance are excellent, side lobe suppression is improved, and antenna characteristics are satisfactory.
The parabolic antenna apparatus has at least a redome having a radio wave absorber in at least one part of the internal surface, and a radio wave reflector coupled to the redome. Radio waves leaking to the outside of the radio wave reflector are absorbed by the radio wave absorber and converged into a primary radiator while reducing the side lobe.
Inventors:
INOUE TOSHIYUKI
TAKEUCHI SHUNJI
HIGAKI KENJI
NATSUHARA KEIICHI
TAKEUCHI SHUNJI
HIGAKI KENJI
NATSUHARA KEIICHI
Application Number:
JP2004264744A
Publication Date:
March 23, 2006
Filing Date:
September 10, 2004
Export Citation:
Assignee:
JAPAN RADIO CO LTD
International Classes:
H01Q1/42; H01Q17/00; H01Q19/13
Attorney, Agent or Firm:
Koichi Hirota
Yoshihiro Nagare
Naoko Matsuda
Yoshihiro Nagare
Naoko Matsuda