发明授权
- 专利标题: High frequency antenna with a variable directing radiation pattern
- 专利标题(中): 具有可变导向辐射图案的高频天线
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申请号: US748326申请日: 1991-08-21
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公开(公告)号: US5235343A公开(公告)日: 1993-08-10
- 发明人: James Audren , Patrice Brault
- 申请人: James Audren , Patrice Brault
- 申请人地址: FRX Guidel
- 专利权人: Societe d'Etudes et de Realisation de Protection Electronique Informatique Electronique
- 当前专利权人: Societe d'Etudes et de Realisation de Protection Electronique Informatique Electronique
- 当前专利权人地址: FRX Guidel
- 优先权: FRX9010528 19900821
- 主分类号: H01Q3/44
- IPC分类号: H01Q3/44 ; H01Q19/28
摘要:
The present invention relates to an antenna apparatus emitting or receiving high frequency waves and comprising four parasitic vertical rod elements disposed symmetrically to a central vertical rod element and switching elements controlled by a control circuit so that the parasitic rod elements are applied successively and periodically to the ground potential by the control circuit.
公开/授权文献
- US5718592A Surface mountable electrical connector assembley 公开/授权日:1998-02-17