发明名称 |
Closed loop antenna tuning system |
摘要 |
<p>A tunable resonant system includes an electric element, and a core having a controllable parameter that determines the resonant frequency of the system. In order to tune the resonant system to a desired frequency, a low power, narrowband signal is applied at a selected frequency to the electric element. The reflected or transmitted power is measured and the value of the controllable parameter adjusted to vary the resonant frequency of the system in a closed loop until the reflected power is at a minimum. <IMAGE> <IMAGE></p> |
申请公布号 |
EP1220354(A2) |
申请公布日期 |
2002.07.03 |
申请号 |
EP20010310542 |
申请日期 |
2001.12.17 |
申请人 |
VISTAR TELECOMMUNICATIONS INC. |
发明人 |
LAFLEUR, PHILIPPE;ROSCOE, DAVID |
分类号 |
H01Q9/04;H01Q23/00;(IPC1-7):H01Q9/04 |
主分类号 |
H01Q9/04 |
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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