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    • 2. 发明申请
    • Transmitter
    • 发射机
    • US20050136854A1
    • 2005-06-23
    • US11001809
    • 2004-12-01
    • Taiji AkizukiMitsuru TanabeKoichiro Tanaka
    • Taiji AkizukiMitsuru TanabeKoichiro Tanaka
    • H03G3/30H04B1/02H04B1/04H04L27/26H04L27/36H05B41/16H05B41/24
    • H04L27/2626H04L27/2614
    • In a range (R3) in which an amplitude component voltage (VA) of a modulation wave signal from an OFDM signal generation unit corresponds to the average output power, an output voltage of a first voltage conversion unit (voltage applied to a base or a gate) is fixed, thus allowing the class AB operation of a high-frequency power amplifier. In a range (R4) in which VA is larger than that in R3, the output voltage of the first voltage conversion unit is increased, thus varying the operating class of the high-frequency power amplifier from class AB to class A. In a range (R2) in which VA is smaller than that in R3, the output voltage of the first voltage conversion unit is decreased, thus varying the operating class of the high-frequency power amplifier from class AB to class B. The efficiency at the time of the average power can be improved without degrading the maximum output power of the high-frequency power amplifier included in a transmitter.
    • 在来自OFDM信号生成单元的调制波信号的振幅分量电压(VA)对应于平均输出功率的范围(R 3)中,第一电压转换单元的输出电压(施加到基极或 一个门)是固定的,从而允许AB类操作一个高频功率放大器。 在其中VA大于R 3的范围(R 4)中,第一电压转换单元的输出电压增加,从而将高频功率放大器的工作类别从AB类改变为A类。在 其中VA小于R 3中的范围(R 2),第一电压转换单元的输出电压减小,从而将高频功率放大器的工作类别从AB类改变为B级。效率 可以在不降低包括在发射机中的高频功率放大器的最大输出功率的情况下提高平均功率的时间。
    • 4. 发明授权
    • Transmitter
    • 发射机
    • US07116947B2
    • 2006-10-03
    • US11085459
    • 2005-03-22
    • Mitsuru TanabeTaiji AkizukiKoichiro Tanaka
    • Mitsuru TanabeTaiji AkizukiKoichiro Tanaka
    • H04B1/02H04B1/04H01Q11/12
    • H03F1/0211H03F1/02H03F1/0227H03F1/0277H03F1/32H03F3/24H03F2200/511H04B2001/045
    • An amplitude component and a phase component of a modulated signal are inputted into a power supply terminal and an input terminal of an RF power amplifier, respectively, and a modulated wave that is produced by demodulating an original modulated signal is obtained from the RF power amplifier. A supply voltage is supplied to an emitter follower and an operational amplifier via a switch group from a DC-DC converter group whose output voltages are sequentially different. As the supply voltage, any pair of outputs of DC-DC converters by the switch group is selected according to levels of the amplitude component, and provides them to the emitter follower and the operational amplifier. The emitter follower performs a DC conversion of the provided supply voltage to provide it to the RF power amplifier.
    • 调制信号的幅度分量和相位分量分别输入到RF功率放大器的电源端子和输入端子,并且从RF功率放大器获得通过解调原始调制信号产生的调制波 。 电源电压经由输出电压依次不同的DC-DC转换器组经由开关组提供给发射极跟随器和运算放大器。 作为电源电压,根据振幅分量的电平选择开关组的DC-DC转换器的任何一对输出,并将其提供给射极跟随器和运算放大器。 射极跟随器对所提供的电源电压进行DC转换,以将其提供给RF功率放大器。
    • 5. 发明申请
    • Transmitter Apparatus and Wireless Communication Apparatus
    • 发射机装置和无线通信装置
    • US20070291873A1
    • 2007-12-20
    • US10597153
    • 2005-01-11
    • Noriaki SaitoKoichiro TanakaMitsuru Tanabe
    • Noriaki SaitoKoichiro TanakaMitsuru Tanabe
    • H04L27/36
    • H03F1/0227H03F1/02H03F3/24H03F2200/372H03G3/004H03G3/3042H03G3/3052H04B1/04H04B2001/045H04L27/361H04L27/366H04W52/52
    • A transmitter apparatus that exhibits a high efficiency and that can provide a wide variable output control width. An operation of saturation mode is performed in the vicinity of the maximum transmission power. A large-power amplifier (12) is caused, by increasing and then fixing the input level thereof, to operate in a saturation state, while the amplitude component of a modulation signal in a range corresponding to an output power control level is inputted to an R-input terminal (33) to amplitude modulate the power supply voltage (VDD) of a power supply terminal (25), thereby performing a polar coordinate modulation of a high efficiency. An operation of linear mode is performed for a smaller transmission power. The large-power amplifier (12) is caused, by reducing the input level thereof, to perform a linear operation, while the power supply voltage (VDD) of the power supply terminal (25) is varied in accordance with the output power control level, thereby performing a transmission power control.
    • 一种展现出高效率且能够提供宽的可变输出控制宽度的发射机设备。 在最大发送功率附近进行饱和模式的动作。 大功率放大器(12)通过增加并固定其输入电平而工作在饱和状态,同时将与输出功率控制电平对应的范围内的调制信号的幅度分量输入到 R输入端子(33)对电源端子(25)的电源电压(VDD)进行幅度调制,从而高效率地进行极坐标调制。 对于更小的发送功率执行线性模式的操作。 大功率放大器(12)通过降低其输入电平来进行线性操作,同时电源端子(25)的电源电压(VDD)根据输出功率控制电平而变化 从而进行发送功率控制。
    • 6. 发明授权
    • Transmission circuit
    • 传输电路
    • US07139534B2
    • 2006-11-21
    • US10790836
    • 2004-03-03
    • Mitsuru TanabeKoichiro Tanaka
    • Mitsuru TanabeKoichiro Tanaka
    • H04B1/02
    • H03F1/0227H04B1/0475
    • A transmission circuit includes: a modulated signal generator; a modulated signal line where an OFDM modulated wave flows; a detector; a phase component line for transmitting a phase component; an amplitude component line for transmitting an amplitude component; a level judging circuit for judging the level of the amplitude component; a constant-voltage supply line; first and second selectors; a quadrature converter; and an RF power amplifier. An EER or pseudo-EER technique is performed in a region where the RF input-output characteristic of the RF power amplifier with an EER technique exhibits a linear response, whereas usual modulation is performed in a region where a nonlinear response is exhibited. The modulation method is switched using the level judging circuit and the selectors with reference to a threshold value which is the boundary between the region where the linear response is exhibited and the region where the nonlinear response is exhibited.
    • 发送电路包括:调制信号发生器; OFDM调制波流动的调制信号线; 检测器 用于发送相位分量的相位分量线; 用于发送振幅分量的幅度分量线; 用于判断振幅分量的电平的电平判断电路; 恒压供电线; 第一和第二选择器; 正交转换器 和RF功率放大器。 在具有EER技术的RF功率放大器的RF输入输出特性呈现线性响应的区域中执行EER或伪EER技术,而在显示非线性响应的区域中执行通常的调制。 参照作为显示线性响应的区域与显示非线性响应的区域之间的边界的阈值,使用电平判定电路和选择器来切换调制方式。
    • 8. 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。
    • 9. 发明授权
    • Transmitter and transceiver
    • 发射器和收发器
    • US07450912B2
    • 2008-11-11
    • US11073860
    • 2005-03-08
    • Mitsuru TanabeKoichiro TanakaNoriaki Saito
    • Mitsuru TanabeKoichiro TanakaNoriaki Saito
    • H04B1/04
    • H03F1/3247H03F1/0227H03F1/025H03F1/3241H03F2200/102H03F2200/336H04B1/0475H04B2001/0425
    • g(x) Storing means stores a correction function y=g(x) corresponding to the distortion of a high frequency power amplifier as a function of a voltage x provided to a power supply terminal of the high frequency power amplifier. Operating means receives the correction function g(x) and a complex vector modulation signal z provided from modulation signal generating means, then causes an inverse function g−1 to operate on the absolute value and the phase of the complex vector modulation signal z having undergone polar coordinate conversion, and thereby outputs z′=g−1(z). This data is provided to the high frequency power amplifier. Further, triangular wave storing means is provided for storing a triangular wave having the same amplitude as that of the modulation signal. Either the triangular wave signal outputted from the triangular wave storing means or the modulation signal z′ is selectively provided to the high frequency power amplifier.
    • g(x)存储装置存储与高频功率放大器的失真相对应的校正函数y = g(x)作为提供给高频功率放大器的电源端子的电压x的函数。 操作装置接收从调制信号发生装置提供的校正函数g(x)和复矢量调制信号z,然后使反函数g -1至...对绝对值和 经过极坐标转换的复矢量调制信号z,从而输出z'= g -1(z)。 该数据被提供给高频功率放大器。 此外,三角波存储装置用于存储具有与调制信号相同幅度的三角波。 从三角波存储装置输出的三角波信号或调制信号z'被选择性地提供给高频功率放大器。
    • 10. 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。