| 发明名称 |
POWER AMPLIFYING MODULE |
| 摘要 |
The linearity of a power amplifying module employing an envelope tracking scheme is improved. The power amplifying module includes a first bipolar transistor having a base to which a first radio frequency signal is input and an emitter grounded, and a second bipolar transistor having a base to which a first constant voltage is applied, a collector to which a first power supply voltage is applied, the first power supply voltage adapted to vary in accordance with an amplitude of the first radio frequency signal, and an emitter connected to a collector of the first bipolar transistor. The second bipolar transistor is configured to output a first amplified signal, obtained by amplifying the first radio frequency signal, from the collector of the second bipolar transistor. |
| 申请公布号 |
US2015171796(A1) |
申请公布日期 |
2015.06.18 |
| 申请号 |
US201414561414 |
申请日期 |
2014.12.05 |
| 申请人 |
Murata Manufacturing Co., Ltd. |
发明人 |
Matsui Toshiki |
| 分类号 |
H03F1/02;H03F3/21;H03F3/19 |
主分类号 |
H03F1/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A power amplifying module comprising:
a first bipolar transistor having a base to which a first radio frequency signal is input and an emitter grounded; and a second bipolar transistor having a base to which a first constant voltage is applied, a collector to which a first power supply voltage is applied, the first power supply voltage adapted to vary in accordance with an amplitude of the first radio frequency signal, and an emitter connected to a collector of the first bipolar transistor, the second bipolar transistor configured to output a first amplified signal, obtained by amplifying the first radio frequency signal, from the collector of the second bipolar transistor. |
| 地址 |
Kyoto JP |
