发明名称 |
Amplifier device with gain switching, for a cellular mobile telephone in particular |
摘要 |
An amplifier device with gain switching includes an amplifier, and a configurable load circuit including an inductive element. The configurable load circuit is capable of exhibiting two configurations having two different impedance values. A controllable switch is connected between the amplifier and the load circuit to select one of the two configurations of the load circuit. The load circuit includes two insulated-gate field effect load transistors connected in series, and which operate in a triode mode. The inductive element is connected in parallel with the pair of load transistors, and between a power supply terminal and the switching circuit.
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申请公布号 |
US2002140510(A1) |
申请公布日期 |
2002.10.03 |
申请号 |
US20020106875 |
申请日期 |
2002.03.26 |
申请人 |
STMICROELECTRONICS S.A. |
发明人 |
GARCIA PATRICE;BELOT DIDIER |
分类号 |
H03G3/10;H03G1/00;H04B1/40;H04M1/00;H04M1/725;(IPC1-7):H03G3/10 |
主分类号 |
H03G3/10 |
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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