发明授权
- 专利标题： High-frequency amplifier and radio transmission device with circuit scale and current consumption reduced to achieve high efficiency
- 专利标题（中）： 高频放大器和无线电传输设备具有电路规模和电流消耗降低，实现高效率
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申请号： US09987579申请日： 2001-11-15
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公开(公告)号： US06876258B2公开(公告)日： 2005-04-05
- 发明人: Akira Ohta , Akira Inoue
- 申请人： Akira Ohta , Akira Inoue
- 申请人地址： JP Tokyo
- 专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： McDermott Will & Emery LLP
- 优先权： JP2001-173966 20010608
- 主分类号： H03F3/60
- IPC分类号： H03F3/60 ; H01P1/203 ; H03F3/189 ; H03F3/193 ; H03H7/01 ; H04B1/04
摘要：
A high-frequency amplifier in a power amplifier module includes, on a substrate on which the amplifier is formed, first- and second-stage amplifiers for receiving and amplifying an input signal, a harmonic processing circuit for matching of harmonics included in an output signal from the second-stage amplifier, and a low-pass filter receiving an output from the harmonic processing circuit to selectively pass a signal to be supplied to a non-reciprocal circuit element using a predetermined frequency as a cutoff frequency.
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