发明名称 |
High frequency power amplification electric part and wireless communication system |
摘要 |
The present invention provides a high frequency power amplification circuit capable of preventing an output power and current consumption from being largely changed even when a load fluctuates in a wireless communication system for detecting an output level necessary for feedback control by a current detecting method. In a high frequency power amplification circuit as a component of a wireless communication system which detects an output level necessary for feedback control by a current detecting method, a capacitive element is interposed between the drain terminal of a power amplification transistor in the final stage and the gate terminal of a transistor constructing a current mirror circuit in a circuit for detecting an output level, and a change in an output power accompanying load fluctuation is reflected in a detection current of the output level detecting circuit.
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申请公布号 |
US7064612(B2) |
申请公布日期 |
2006.06.20 |
申请号 |
US20030682250 |
申请日期 |
2003.10.10 |
申请人 |
AKITA ELECTRONICS SYSTEMS CO., LTD. |
发明人 |
AKAMINE HITOSHI;ONO SEIKOU;MARUYAMA MASASHI |
分类号 |
H03F1/34;H03G3/30;H03F1/02;H03F3/193;H03F3/24;H03F3/60 |
主分类号 |
H03F1/34 |
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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