Title:
PARABOLIC ANTENNA
Document Type and Number:
Japanese Patent JP2011142504
Kind Code:
A
Abstract:
To provide a parabolic antenna excellent in radio wave absorption characteristics and durability even at a reduced cost.
In the parabolic antenna 1 including a reflector 2, a shroud 3 and a primary radiator 4, a plurality of plate-like radio wave absorbers 10 made of a wood piece are arranged side by side on the inner peripheral surface of the shroud 3. Also, by adjusting the shape and thickness of the radio wave absorbers 10, the radio wave absorption characteristics are improved, and side lobe characteristics are improved. Further, by securing the interval D1 of the radio wave absorbers 10, the reflection characteristics of the oblique incidence of radio waves are improved.
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Inventors:
KURAMOTO AKIO
IWANAKA DAISUKE
FUKUDA JUNICHI
IWANAKA DAISUKE
FUKUDA JUNICHI
Application Number:
JP2010001985A
Publication Date:
July 21, 2011
Filing Date:
January 07, 2010
Export Citation:
Assignee:
NEC CORP
International Classes:
H01Q19/13; H01Q17/00
Domestic Patent References:
| JP2006081041A | 2006-03-23 | |||
| JP2002121841A | 2002-04-26 | |||
| JP2005109095A | 2005-04-21 | |||
| JPH0230200A | 1990-01-31 | |||
| JP2004244804A | 2004-09-02 |
Attorney, Agent or Firm:
Sumio Tanai
Ryuichiro Mori
Naoki Matsuo
Ryuichiro Mori
Naoki Matsuo