| 发明名称 |
Encapsulated antenna in passive transponders |
| 摘要 |
<p>A passive transponder comprises an antenna (1, 2) in the form of a metal body with two main surfaces and a diode (3) connected between the main surfaces and a dielectric (10) surrounding the antenna. A characteristic of the invention is that the impedance of the antenna is adapted to the impedance of the diode by matching unit (13, 14). A transmission line (8) is used as the matching unit. Another characteristic for the invention is that the transmission line is surrounded by a dielectric (10) made of plastic. Yet another characteristic of the invention is that the antenna is surrounded by a dielectric made of plastic which reduces the influence of the surroundings on the near field of the antenna. <IMAGE></p> |
| 申请公布号 |
EP1035418(A1) |
申请公布日期 |
2000.09.13 |
| 申请号 |
EP20000102351 |
申请日期 |
2000.02.03 |
| 申请人 |
GRANHED, MAGNUS |
发明人 |
FUKS, PETER;LARSSON, GUNNAR;REHN, ANDERS;GRANHED, MAGNUS |
| 分类号 |
G01S13/75;H01Q1/40;G01S13/76;G01S13/79;H01Q1/22;H01P5/08;H01Q1/38;H01Q9/16;H01Q13/10;H04B1/59;H04B5/02;(IPC1-7):G01S13/02;G01S13/82;A63B29/02;H01Q9/26 |
主分类号 |
G01S13/75 |
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