发明名称 |
Semiconductor power amplifier |
摘要 |
A semiconductor power amplifier comprises an input-side amplifier for inputting and amplifying an input signal, a balanced amplifier which is connected to an output terminal of the input-side amplifier, comprises two hybrid couplers and a plurality of power amplifiers, passes the input signal, and converts a reflective wave into thermal energy, and an output-side amplifier which is connected to an output terminal of the balanced amplifier and amplifies an output signal. |
申请公布号 |
US9112454(B2) |
申请公布日期 |
2015.08.18 |
申请号 |
US201314082291 |
申请日期 |
2013.11.18 |
申请人 |
Kabushiki Kaisha Toshiba |
发明人 |
Kuroda Kenta |
分类号 |
H03F3/21;H03F1/02;H03F1/56;H03F3/189;H03F3/24;H03F3/60 |
主分类号 |
H03F3/21 |
代理机构 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. A semiconductor power amplifier comprising:
an input-side semiconductor amplifier for amplifying an input signal; a balanced amplifier connected to an output terminal of the input-side amplifier; and an output-side semiconductor amplifier connected to an output terminal of the balanced amplifier, wherein the balanced amplifier comprises: a first hybrid coupler which has a sum port as a first input/output terminal, a difference port as a second input/output terminal, a third input/output terminal and a fourth input/output terminal and in which the output terminal of the input-side amplifier is connected to the sum port; a first termination resistor connected to the difference port of the first hybrid coupler; a first semiconductor amplifier connected to the third input/output terminal of the first hybrid coupler; a second semiconductor amplifier connected to the fourth input/output terminal of the first hybrid coupler; a second hybrid coupler which has a sum port as a first input/output terminal, a difference port as a second input/output terminal, a third input/output terminal and a fourth input/output terminal and in which an output terminal of the first semiconductor amplifier is connected to the fourth input/output terminal, an output terminal of the second semiconductor amplifier is connected to the third input/output terminal, and an input terminal of the output-side semiconductor amplifier is connected to the sum port; a second termination resistor connected to the difference port of the second hybrid coupler; a first semiconductor amplifier and a third semiconductor amplifier cascaded to the first semiconductor amplifier; and a second semiconductor amplifier and a fourth semiconductor amplifier cascaded to the second semiconductor amplifier. |
地址 |
Minato-ku JP |