发明名称 |
Directional dual frequency antenna arrangement |
摘要 |
Consistent with an example embodiment, using two simple antennas with different frequencies of operation combined into an antenna arrangement a directional radiation pattern is obtained for both frequencies of operation. This is achieved by placing the antennas such that the first antenna acts as a director for the second antenna at the frequency of operation of the second antenna and the second antenna acts as a reflector for the first antenna at the frequency of operation of the first antenna. In another example embodiment, in the case of a monopole antenna the first antenna is shorter than the second antenna and can thus operate as a director while the second antenna is longer than the first antenna and can thus act as a reflector.
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申请公布号 |
US7230579(B2) |
申请公布日期 |
2007.06.12 |
申请号 |
US20050523619 |
申请日期 |
2005.02.01 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
DE RUIJTER HENDRICUS CLEMENS |
分类号 |
H01Q19/28;H01Q21/00;H01Q1/24;H01Q3/24;H01Q5/01;H01Q9/30;H01Q19/00;H01Q21/29 |
主分类号 |
H01Q19/28 |
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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