发明名称 |
Method and apparatus for automatic tuning of a resonant loop antenna in a transceiver circuit |
摘要 |
Disclosed is a circuit and method for automatic tuning of a resonant circuit in a transceiver having a receiver and a transmitter that includes a power amplifier for driving the resonant circuit. During a transmit mode of the transceiver, a resonance voltage of the resonant circuit is compared to an input voltage signal to the power amplifier to determine an error signal that is converted into a control word. The control word drives an adjustable capacitance bank that is part of the resonant circuit. During a receive mode of the transceiver, the control word value is held constant to substantially maintain resonance of the resonant circuit during operation of the receiver.
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申请公布号 |
US7190933(B2) |
申请公布日期 |
2007.03.13 |
申请号 |
US20040891708 |
申请日期 |
2004.07.15 |
申请人 |
INTERGRATION ASSOCIATES INC. |
发明人 |
DE RUIJTER HENDRICUS;TOTH GABOR;ONODY PETER;HEGYI ANDRAS;ZOLOMY ATTILA;PARDOEN MATTHIJS D.;ERDELYI JANOS;MERNYEI FERENC |
分类号 |
H01Q11/12;H01Q7/00;H01Q23/00;H04B1/04 |
主分类号 |
H01Q11/12 |
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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