| 发明名称 |
DIRECTIONAL ANTENNA FOR HAND-HELD WIRELESS COMMUNICATIONS DEVICE |
| 摘要 |
A system for wireless communications is provided. The system includes a hand-held wireless communications device, such as a cell phone. An antenna is connected to the cell phone. The antenna radiates radio waves over an area of less than 360 degrees of arc, such as in a cardioid or hemisphere. The antenna is oriented such that hemisphere is in the direction away from a head of a user of the cell phone.
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| 申请公布号 |
US2002058539(A1) |
申请公布日期 |
2002.05.16 |
| 申请号 |
US19990394189 |
申请日期 |
1999.09.13 |
| 申请人 |
UNDERBRINK PAUL A.;HALE KELLY H.;YIN GUANG-MING;RYAN PATRICK D.;COLLES JOSEPH H.;SHAMLOU DARYUSH;LEVESQUE CHRISTIAN |
发明人 |
UNDERBRINK PAUL A.;HALE KELLY H.;YIN GUANG-MING;RYAN PATRICK D.;COLLES JOSEPH H.;SHAMLOU DARYUSH;LEVESQUE CHRISTIAN |
| 分类号 |
H01Q1/24;H04W88/02;(IPC1-7):H04Q7/20 |
主分类号 |
H01Q1/24 |
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