Title:
REFLECTED WAVE INTERFERENCE SUPPRESSION FROM ANTENNA MOUNTING PLATE IN SERVICE LINK OF HAPS
Document Type and Number:
Japanese Patent JP2022013417
Kind Code:
A
Abstract:
To provide an aerial stay type communication relay device capable of preventing deterioration of communication quality as a result by stably fixing a footprint of a cell while suppressing fluctuation of a directivity pattern caused by reflection on an antenna mounting member to which an antenna of a service link is mounted.SOLUTION: A communication relay device comprises: an antenna including a plurality of antenna elements forming a cell to perform a wireless communication of a service link with a terminal device; and an antenna mounting member to which the antenna is mounted. A layer of a radio wave absorber or a layer of a frequency selective electromagnetic shield member for selectively shielding a radio wave in a frequency of the service link is included on an outer surface exposed outside of the antenna mounting member. Phases and amplitudes of a plurality of transmission/reception signals to be transmitted/received via the plurality of antenna elements of the antenna may also be controlled so as to form an antenna directivity beam having a target beam width, a target horizontal angle and a target vertical angle.SELECTED DRAWING: Figure 10
Inventors:
SUDO SHOICHI
HOSHINO KENJI
LIN HOYU
HOSHINO KENJI
LIN HOYU
Application Number:
JP2020115954A
Publication Date:
January 18, 2022
Filing Date:
July 03, 2020
Export Citation:
Assignee:
HAPSMOBILE INC
International Classes:
H01Q1/52; H01Q3/26; H01Q17/00
Domestic Patent References:
| JP2020036070A | 2020-03-05 | |||
| JP2008523708A | 2008-07-03 | |||
| JPH1188042A | 1999-03-30 | |||
| JP2009232213A | 2009-10-08 |
Attorney, Agent or Firm:
Kuroda Toshi
Hiromichi Nakamura
Hiromichi Nakamura