发明名称 |
Helixantenn för dubbelfrekvensoperation |
摘要 |
An antenna (400; 600) for transmitting and receiving radio-frequency signals comprises a cylindrical coil conductor (601) having a turn A and a turn B and between them other turns. The pitch (x1) of turn A is unequal to the pitch (x2) of said turn B, and the pitches of the other turns between turns A and B are in the order of magnitude between the pitches of turns A and B. |
申请公布号 |
FI974527(A) |
申请公布日期 |
1999.06.17 |
申请号 |
FI19970004527 |
申请日期 |
1997.12.16 |
申请人 |
LK-PRODUCTS OY |
发明人 |
ANNAMAA, PETTERI;KUITTINEN, TERO;BORDI, MIKA;PUURUNEN, PERTTI |
分类号 |
H01Q1/36;H01Q5/00;(IPC1-7):H01Q |
主分类号 |
H01Q1/36 |
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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