发明名称 |
High-frequency power amplifier module |
摘要 |
A radio frequency power amplifier module for a dual-band type mobile communication apparatus that can transmit and receive a first frequency f1 and second frequency f2 (f2=2xf1). It includes a drive stage amplifier having the gain peaks at f1 and f2 with a matching circuit and a radio frequency power output circuit including a radio frequency power output transistor. The output circuit has a transmission line connected to the drain end of the output transistor, a parallel resonance circuit connected in series to the transmission line to resonate at harmonics of a frequency twice the frequency f2, a series resonance circuit provided between one end of the resonance circuit and the ground to resonate at harmonics of a frequency twice the frequency f2 and an output matching circuit provided in series to the other end of the parallel resonance circuit for matching with f1 and f2.
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申请公布号 |
US6535069(B2) |
申请公布日期 |
2003.03.18 |
申请号 |
US20020084364 |
申请日期 |
2002.02.28 |
申请人 |
HITACHI, LTD. |
发明人 |
FUJIOKA TORU;YOSHIDA ISAO;KATSUEDA MINEO;MORIKAWA MASATOSHI;MATSUNAGA YOSHIKUNI;SEKINE KENJI;KAGAYA OSAMU |
分类号 |
H03F3/193;H03F3/21;H03F3/72;H04B1/00;H04B1/04;(IPC1-7):H03F3/04;H03F3/68 |
主分类号 |
H03F3/193 |
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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