发明授权
- 专利标题: Array antenna generating circularly polarized waves with a plurality of microstrip antennas
- 专利标题(中): 阵列天线产生具有多个微带天线的圆偏振波
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申请号: US891163申请日: 1992-05-29
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公开(公告)号: US5287116A公开(公告)日: 1994-02-15
- 发明人: Hisao Iwasaki , Hisashi Sawada
- 申请人: Hisao Iwasaki , Hisashi Sawada
- 申请人地址: JPX Kawagawa
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JPX Kawagawa
- 优先权: JPX3-126403 19910530; JPX3-220639 19910830; JPX3-249909 19910927; JPX3-309135 19911125
- 主分类号: H01Q5/00
- IPC分类号: H01Q5/00 ; H01Q5/35 ; H01Q21/06 ; H01Q1/38 ; H01Q13/08 ; H01Q21/22 ; H01Q21/24
摘要:
A microstrip antenna is disclosed which comprises a ground conductor plate and a patch opposed to the ground conductor plate with a particular distance, a transmission feed line and a reception feed line being disposed between the ground conductor plate and the patch. Signals are fed from these feed lines to the patch by electromagnetic coupling. The angle made by the extended lines of these feed lines is nearly 90.degree.. When four patches are disposed in a square arrangement, the transmission feed line feeds signals in directions of first lines which pass through the center point of each patch in such a way that the directions are line-symmetrical with respect to a horizontal line and a vertical line which pass through the center point of the square arrangement. On the other hand, the reception feed line feeds signals in the directions of second lines which pass through the center point of each patch and intersect with each first line at right angle. As a result, the mutual coupling between transmission and reception can be suppressed to a low level. In addition, when the transmission feed line is radiately connected from the center point of the square arrangement to each patch, the length thereof can be reduced, thereby decreasing the transmission loss.
公开/授权文献
- US6078311A Joystick game adapter card for a personal computer 公开/授权日:2000-06-20