Four planes antenna system in use for mobile terminals in multiple input/output communication system
Title：
Four planes antenna system in use for mobile terminals in multiple input/output communication system
Application Number：
 200510012069
Application Date：
 2005/07/01
Announcement Date：
 2006/02/01
Pub. Date：
Publication Number：
 1728455
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H01Q 1/38, H01Q 1/48, H01Q 1/52, H01Q 9/30, H01Q 13/08, H01Q 21/28
Applicant(s)：
 Tsinghua Univ
Inventor(s)：
 Du Zhengwei, Gong Ke
Key Words：
 multiple input/output, communication system, mobile terminals, four planes antenna system
Abstract：
 Each two units of antenna are arranged in axial symmetry, that is to say each two units of antenna are arranged in left ¨C right and upper ¨C lower. Two units of antenna in left ¨C right position are identical. Two units of antenna in upper ¨C lower may be identical or different. Main radiating elements of two units of antenna in upper ¨C lower are perpendicular to each other. Metal ground is in use for simulating metal part other than antenna in communication system, and T shape or deformation structure. T shape or deformation structure is in use for reducing cross coupling between two units of antenna in left ¨C right. Mode for slitting metal ground is in use for reducing cross coupling between two units of antenna in upper ¨C lower. Other structure may be adopted to reduce cross coupling further. Four units of antenna and feed line are printed on same face of PCB, and metal ground is printed on the other face. Features are: small size, low cost, easy of fabrication and integration.
Claim：
Priority：
PCT：
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2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







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