| 发明名称 | Modulated signal generating device and wireless device | ||
| 摘要 | According to an embodiment, the modulated signal generating device modulates an input signal and generates an output signal. The modulated signal generating device includes a plurality of amplifiers, a combiner, a determining unit and a control signal generating unit. The plurality of amplifiers connects in parallel with one another and each configures to drive based on a control signal and to generate amplified signals. The combiner configures to combine the amplified signals and to obtain the output signal having a stepwise waveform. The determining unit configures to determine number of amplifiers to be driven based on a value of the input signal in a period shorter than a period of the input signal. The control signal generating unit configures to select zero or more amplifiers to be driven from among the amplifiers, based on the number of amplifiers determined by the determining unit, the value of the input signal, and a fluctuation in the value of the input signal, and to generate the control signal for driving the selected amplifier. | ||
| 申请公布号 | US9590829(B2) | 申请公布日期 | 2017.03.07 |
| 申请号 | US201514882745 | 申请日期 | 2015.10.14 |
| 申请人 | Kabushiki Kaisha Toshiba | 发明人 | Egashira Yoshimasa;Yamaguchi Keiichi |
| 分类号 | H04L27/04;H04B1/04;H03C1/00 | 主分类号 | H04L27/04 |
| 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 modulated signal generating device that modulates an input signal and generates an output signal, the modulated signal generating device comprising: a plurality of amplifiers connected in parallel with one another and each configured to drive based on a control signal and to generate amplified signals; a combiner configured to combine the amplified signals and to obtain the output signal having a stepwise waveform; a determining unit configured to determine a number of amplifiers to be driven based on a value of the input signal every period shorter than a period of the input signal; and a control signal generating unit configured to select zero or more amplifiers to be driven from among the amplifiers, based on the number of amplifiers determined by the determining unit, the value of the input signal, and a fluctuation in the value of the input signal, and to generate the control signal for driving the selected amplifier. | ||
| 地址 | Minato-ku JP | ||