发明名称 |
Kompakte Dualband-Antenne |
摘要 |
The invention relates to a balanced dual band antenna comprising a plane microstrip part and a plane electrically conductive ground plane part arranged substantially parallel to each other. A resonator of the antenna exhibits a½-wavelength first resonance within the frequency interval 400-500 MHz and exhibits a ¾-wavelength second resonance within the frequency interval 800-1000MHz. Preferably, the microstrip part is formed by a printed circuit board with electrically conductive paths. The antenna may be adapted for example for a lower frequency of 444MHz and a higher frequency of 910MHz (GSM). Preferably, the antenna is provided with a protecting cover. The antenna may be used with an associated consumption meter adapted for wireless transmission of measured consumed quantity. The antenna according to the invention exhibits a high efficiency and it is generally insensitive to mounting positions close to a surface etc. |
申请公布号 |
DE20380353(U1) |
申请公布日期 |
2006.03.23 |
申请号 |
DE2003280353U |
申请日期 |
2003.11.26 |
申请人 |
KAMSTRUP A/S, SKANDERBORG |
发明人 |
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分类号 |
H01Q1/22;H01Q1/38;H01Q1/42;H01Q5/00;H01Q9/04;H01Q9/16 |
主分类号 |
H01Q1/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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