Title:
アンテナ反射器
Document Type and Number:
Japanese Patent JP5574446
Kind Code:
B2
Abstract:
A reflector (8) for a reflector antenna is provided for producing a far field pattern with near-zero field strength at a predetermined position, the reflector having a surface comprising a stepped profile for generating the near-zero field strength. The stepped profile may comprise a radial step. The location of the near-zero field strength can be steered by moving the reflector only or by adjusting the amplitude and phase of an additional low resolution beam, produced by, for example, a simple horn (16), covering the same region.
Inventors:
David Robson
Simon John スティアー land
Simon John スティアー land
Application Number:
JP2011525567A
Publication Date:
August 20, 2014
Filing Date:
September 04, 2009
Export Citation:
Assignee:
Astrium Limited
International Classes:
H01Q15/14; H01Q3/44; H01Q19/13
Attorney, Agent or Firm:
Yoshifumi Saeki
Takashi Watanabe
Shinya Jitsuhiro
Takashi Watanabe
Shinya Jitsuhiro
Previous Patent: 生分解性多孔質中空微粒子、その製造方法および用途
Next Patent: METHOD OF MEASURING IMPURITY CONCENTRATION DISTRIBUTION OF SEMICONDUCTOR WAFER
Next Patent: METHOD OF MEASURING IMPURITY CONCENTRATION DISTRIBUTION OF SEMICONDUCTOR WAFER