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    • 15. 发明授权
    • Transmitter
    • 发射机
    • US07116946B2
    • 2006-10-03
    • US10522741
    • 2003-10-23
    • Mitsuru TanabeTakaharu SaekiYoshihisa MinamiKoichiro TanakaNoriaki Saito
    • Mitsuru TanabeTakaharu SaekiYoshihisa MinamiKoichiro TanakaNoriaki Saito
    • H04B1/02H04B1/04H01Q11/12
    • H03F1/025H03F1/02H03F1/0244H03F3/24H03F2200/507H03F2200/511H04B2001/045
    • The present invention provides a transmitter conforming to the EER method in a wide frequency band at high efficiency. For this purpose, the amplitude component of a modulated signal is input to the power supply terminal of a high-frequency power amplifier 130, the I and Q quadrature signals thereof are input to the high-frequency input terminal of the high-frequency power amplifier 130, and the original modulated signal is obtained from the output of the high-frequency power amplifier 130. A collector voltage is supplied from DC—DC converter group 615 having output voltages being different sequentially to an emitter follower 729 via a switch group 621. One of the outputs of the DC—DC converters 616 to 620 is selected depending on the level of the amplitude component as the collector voltage and supplied to the emitter follower, whereby the difference between the emitter voltage of he emitter follower 729 and the collector voltage of the emitter follower 729 is made smaller and the efficiency of the emitter follower 729 is raised; furthermore, the power supply voltage of the high-frequency power amplifier 130 is voltage-converted by the emitter follower 729, whereby operation in a wide frequency band is made possible.
    • 本发明提供了一种符合EER方法的发射机,在宽频带内具有高效率。 为此,调制信号的幅度分量被输入到高频功率放大器130的电源端子,其I和Q正交信号被输入到高频功率放大器的高频输入端 130,并且从高频功率放大器130的输出获得原始调制信号。 从具有输出电压的DC-DC转换器组615经由开关组621向发射极跟随器729提供集电极电压。 DC-DC转换器616至620的输出之一根据作为集电极电压的振幅分量的电平来选择,并提供给射极跟随器,由此发射极跟随器729的发射极电压与集电极电压 使发射极跟随器729的功率越小,发射极跟随器729的效率越高; 此外,高频功率放大器130的电源电压由射极跟随器729进行电压转换,从而可以在宽频带中进行操作。
    • 20. 发明授权
    • Transmitter apparatus and wireless communication apparatus
    • 发射机装置和无线通信装置
    • US07684514B2
    • 2010-03-23
    • US10597153
    • 2005-01-11
    • Noriaki SaitoKoichiro TanakaMitsuru Tanabe
    • Noriaki SaitoKoichiro TanakaMitsuru Tanabe
    • H04L25/49H04L27/20H03F1/26H04B1/02
    • H03F1/0227H03F1/02H03F3/24H03F2200/372H03G3/004H03G3/3042H03G3/3052H04B1/04H04B2001/045H04L27/361H04L27/366H04W52/52
    • A transmitter providing a wide output control variable width with high efficiency is provided. Saturation mode operation is performed in the vicinity of the maximum transmission power and the input level of a large power amplifier is enlarged and fixed. When the large power amplifier is operated in a saturation state, the amplitude component of a modulation signal is input to an R input terminal in the range responsive to an output power control level and power supply voltage of a power supply terminal is amplitude-modulated, whereby highly efficient polar coordinate modulation is performed. In smaller transmission power, linear mode operation is performed, the input level of the large power amplifier is lessened for operating the large power amplifier in the linear mode, and the power supply voltage of the power supply terminal is made variable in response to the output power control level, whereby transmission power control is performed.
    • 提供了一种提供宽输出控制可变宽度,高效率的变送器。 在最大发送功率附近进行饱和模式操作,并且大功率放大器的输入电平被放大和固定。 当大功率放大器工作在饱和状态时,调制信号的振幅分量在响应于输出功率控制电平的范围内输入到R输入端,并且对电源端的电源电压进行幅度调制, 由此执行高效的极坐标调制。 在较小的发射功率中,执行线性模式操作,大功率放大器的输入电平减小,用于在线性模式下操作大功率放大器,并且电源端子的电源电压响应于输出而变化 功率控制电平,由此进行发送功率控制。