公开(公告)号：US06833758B2

公开(公告)日：2004-12-21

申请号：US10446055

申请日：2003-05-28

申请人： Toshimitsu Matsuyoshi ,  Kaoru Ishida ,  Seiji Fujiwara

发明人： Toshimitsu Matsuyoshi ,  Kaoru Ishida ,  Seiji Fujiwara

IPC分类号： H03F126

CPC分类号： H03F1/3247 ,  H03F2200/102

摘要： A power amplifier capable of compensating for distortion by pre-distortion and achieving a large distortion suppressing effect even if IM3L components and IM3U components occurring at the power amplifier have a large level difference. A power amplifying circuit 117 amplifies an original signal. An envelope detector 119 generates an envelope signal having components identical to envelope components included in the original signal. Based on the original signal a distortion signal generating circuit 112 generates a distortion signal for canceling distortion components occurring while the original signal is amplified by the power amplifying circuit 117. In a power combiner 116, the envelope signal is injected to the original signal, thereby eliminating the asymmetric characteristic of the distortion components. In the power amplifying circuit 117, the distortion signal is injected to the original signal, thereby suppressing the distortion components.

摘要翻译： 功率放大器能够通过预失真来补偿失真，并且即使在功率放大器处出现的IM3L分量和IM3U分量具有较大的电平差，也能实现大的失真抑制效果。 功率放大电路117放大原始信号。 包络检测器119产生具有与包含在原始信号中的包络分量相同的分量的包络信号。 基于原始信号，失真信号发生电路112产生用于消除由功率放大电路117放大原始信号时发生的失真分量的失真信号。在功率合成器116中，将包络信号注入原始信号，从而 消除了失真分量的不对称特性。 在功率放大电路117中，将失真信号注入原始信号，从而抑制失真成分。

公开(公告)号：US06750706B2

公开(公告)日：2004-06-15

申请号：US10167687

申请日：2002-06-11

申请人： Kaoru Ishida ,  Toshimitsu Matsuyoshi ,  Naoki Takachi ,  Yuji Saito

发明人： Kaoru Ishida ,  Toshimitsu Matsuyoshi ,  Naoki Takachi ,  Yuji Saito

IPC分类号： H03F366

CPC分类号： H03F1/3235 ,  H03F1/3229 ,  H03F2201/3212

摘要： A method of controlling a feedforward distortion compensation amplifier has steps of detecting a distortion component generated in a main amplifier by coupling a signal branched from a signal input to the main amplifier and containing a plurality of carriers of different frequencies to a signal branched from an output signal from the main amplifier so that the coupling causes the carrier components to cancel each other, recoupling the signal resulting from the coupling to the output signal from the main amplifier, and adjusting an amplitude and phase of at least one of the signals to be recoupled so that distortion components cancel each other upon recoupling, wherein a first and second pilot signals obtained from a first and second pilot signal sources are inserted into the input signal to or output signal from the main amplifier, parts of the signal resulting from the recoupling are taken out through branching, and the signals taken out through branching are mixed with the first and second pilot signals, respectively, and thus down-converted to generate down convert signals so that control signals to adjust the amplitude and phase are generated according to the down convert signals.

摘要翻译： 控制前馈失真补偿放大器的方法具有通过将从输入信号分支到主放大器并将不同频率的多个载波分支的信号耦合到从输出信号分支的信号来检测在主放大器中产生的失真分量的步骤 使得耦合使得载波分量彼此抵消，将耦合产生的信号重新耦合到来自主放大器的输出信号，并且调整要重新耦合的至少一个信号的振幅和相位，从而 该失真分量在重新耦合时彼此抵消，其中从第一和第二导频信号源获得的第一和第二导频信号被插入到主放大器的输入信号中或从主放大器输出信号，取出由重新耦合产生的信号的部分 通过分支输出，并且通过分支取出的信号与第一和第二部分混合 并且因此下变频以产生下变频信号，从而根据降频转换信号产生调节幅度和相位的控制信号。

公开(公告)号：US08442153B2

公开(公告)日：2013-05-14

申请号：US13381226

申请日：2010-05-19

申请人： Mikihiro Shimada ,  Kaoru Ishida ,  Hiroshi Komori

发明人： Mikihiro Shimada ,  Kaoru Ishida ,  Hiroshi Komori

IPC分类号： H04L27/04

CPC分类号： H03F1/0227 ,  H03F3/195 ,  H03F3/24 ,  H03F2200/324 ,  H03F2200/336 ,  H04B2001/0416

摘要： A transmission circuit (100) according to the present invention includes an RF-IC (110), an EM-IC (120), and a power amplifier (130). The EM-IC (120) includes a DC-DC converter (123), a transistor (124), a low-dropout regulator (121), and a regulator output selector switch (122). After an elapse of a predetermined time from a time when an operation mode of the transmission circuit has switched from a polar modulation mode to a quadrature modulation mode to a time when a power supply voltage for the quadrature modulation mode output from the DC-DC converter (123) stabilizes at a desired value, the regulator output selector switch (122) switches a connection destination of a gate of the transistor (124) to a fixed potential, and outputs as a control voltage the power supply voltage for the quadrature modulation mode output from the DC-DC converter (123).

摘要翻译： 根据本发明的传输电路（100）包括RF-IC（110），EM-IC（120）和功率放大器（130）。 EM-IC（120）包括DC-DC转换器（123），晶体管（124），低压差稳压器（121）和调节器输出选择器开关（122）。 在从发送电路的操作模式从极调制模式切换到正交调制模式的时间经过预定时间之后到从DC-DC转换器输出的正交调制模式的电源电压 （123）稳定在期望值时，调节器输出选择器开关（122）将晶体管（124）的栅极的连接目的地切换到固定电位，并将用于正交调制模式的电源电压作为控制电压输出 从DC-DC转换器（123）输出。

公开(公告)号：US20120140852A1

公开(公告)日：2012-06-07

申请号：US13388495

申请日：2010-04-07

申请人： Akira Kato ,  Kaoru Ishida

发明人： Akira Kato ,  Kaoru Ishida

IPC分类号： H04L27/36

CPC分类号： H03F1/30 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/331 ,  H03F2200/336 ,  H03F2200/405 ,  H03F2200/447 ,  H03F2200/451 ,  H03G3/3042 ,  H04B1/0475

摘要： A transmitter circuit includes a first synthesizer section, and a second synthesizer section which consumes less current than the first synthesizer section. The transmitter circuit performs switching such that the first synthesizer section is operated and the second synthesizer section is powered off in polar modulation, and the second synthesizer section is operated and the first synthesizer section is powered off in quadrature modulation, thereby reducing consumed power. While the first synthesizer section is operating, calibration for an oscillation frequency is performed, and when the operation is stopped, a calibration value is stored. When an operation of the first synthesizer section is restarted, the stored calibration value is corrected by using temperature change, thereby enhancing calibration accuracy and preventing degradation in quality of a transmission signal.

摘要翻译： 发射机电路包括第一合成器部分和与第一合成器部分相比消耗更少电流的第二合成器部分。 发射机电路进行切换，使得第一合成器部分被操作，并且第二合成器部分在极性调制中被断电，并且第二合成器部分被操作，并且第一合成器部分在正交调制中被断电，从而降低了功耗。 当第一合成器部分工作时，执行振荡频率的校准，当操作停止时，存储校准值。 当重新启动第一合成器部分的操作时，通过使用温度变化来校正存储的校准值，从而提高校准精度并防止传输信号的质量劣化。

公开(公告)号：US20120114075A1

公开(公告)日：2012-05-10

申请号：US13381226

申请日：2010-05-19

申请人： Mikihiro Shimada ,  Kaoru Ishida ,  Hiroshi Komori

发明人： Mikihiro Shimada ,  Kaoru Ishida ,  Hiroshi Komori

IPC分类号： H04L27/36

CPC分类号： H03F1/0227 ,  H03F3/195 ,  H03F3/24 ,  H03F2200/324 ,  H03F2200/336 ,  H04B2001/0416

摘要： A transmission circuit (100) according to the present invention includes an RF-IC (110), an EM-IC (120), and a power amplifier (130). The EM-IC (120) includes a DC-DC converter (123), a transistor (124), a low-dropout regulator (121), and a regulator output selector switch (122). After an elapse of a predetermined time from a time when an operation mode of the transmission circuit has switched from a polar modulation mode to a quadrature modulation mode to a time when a power supply voltage for the quadrature modulation mode output from the DC-DC converter (123) stabilizes at a desired value, the regulator output selector switch (122) switches a connection destination of a gate of the transistor (124) to a fixed potential, and outputs as a control voltage the power supply voltage for the quadrature modulation mode output from the DC-DC converter (123).

摘要翻译： 根据本发明的传输电路（100）包括RF-IC（110），EM-IC（120）和功率放大器（130）。 EM-IC（120）包括DC-DC转换器（123），晶体管（124），低压差稳压器（121）和调节器输出选择器开关（122）。 在从发送电路的操作模式从极调制模式切换到正交调制模式的时间经过预定时间之后到从DC-DC转换器输出的正交调制模式的电源电压 （123）稳定在期望值时，调节器输出选择器开关（122）将晶体管（124）的栅极的连接目的地切换到固定电位，并将用于正交调制模式的电源电压作为控制电压输出 从DC-DC转换器（123）输出。

公开(公告)号：US20120108187A1

公开(公告)日：2012-05-03

申请号：US13381240

申请日：2010-04-01

申请人： Ryo Kitamura ,  Kaoru Ishida ,  Mikihiro Shimada ,  Hiroshi Komori

发明人： Ryo Kitamura ,  Kaoru Ishida ,  Mikihiro Shimada ,  Hiroshi Komori

IPC分类号： H04B1/04

CPC分类号： H03F1/0261 ,  H03F1/304 ,  H03F1/32 ,  H03F3/245 ,  H03F2200/108 ,  H03F2200/18 ,  H03F2200/408 ,  H03F2200/468

摘要： A transmitter circuit is provided which is capable of reducing modulation distortion even when an output power of a power amplifying section 141 is low. A signal generation section 11 generates an amplitude signal and a phase signal. A regulator 12 outputs a current based on the amplitude signal. A phase modulation section 13 phase-modulates the phase signal, and outputs a phase-modulated signal. The power amplifying section 141 receives the current which is based on the amplitude signal and supplied as a bias current from the regulator 12, and amplifies the phase-modulated signal by using the supplied current. Further, to the power amplifying section 141, a predetermined DC voltage is supplied as a collector voltage.

摘要翻译： 提供一种即使当功率放大部分141的输出功率低时也能够降低调制失真的发射机电路。 信号生成部11生成振幅信号和相位信号。 调节器12基于振幅信号输出电流。 相位调制部13对相位信号进行相位调制，并输出相位调制信号。 功率放大部分141接收基于振幅信号并作为偏置电流从调节器12提供的电流，并且通过使用所提供的电流来放大相位调制信号。 此外，向功率放大部141提供预定的DC电压作为集电极电压。

公开(公告)号：US20120105151A1

公开(公告)日：2012-05-03

申请号：US13383609

申请日：2011-05-13

申请人： Maki Nakamura ,  Kaoru Ishida

发明人： Maki Nakamura ,  Kaoru Ishida

IPC分类号： H03G3/20

CPC分类号： H04B1/0475 ,  H03F1/02 ,  H03F1/0211 ,  H03F3/24 ,  H03F2200/105 ,  H04B1/406 ,  H04B2001/045

摘要： Provided is a transmission circuit capable of compensating a variation in output power caused due to a temperature change or an individual variability when the operation mode is switched without an increase in the size of the transmission circuit which switches the operation mode between a linear operation mode and a nonlinear operation mode, and capable of suppressing the deterioration of the quality of a transmission signal. In the transmission circuit, a gain setting section (160) sets the gain (target gain) of a variable gain amplifier (140), to a value which enables the variable gain amplifier (140) to operate linearly and corresponds to a comparison result (output error level) obtained through comparison between the target level of the variable gain amplifier (140) corresponding to the set power level of the transmission signal and the power level of an output signal of the variable gain amplifier (140) detected by a power detection section (150). The variable gain amplifier (140) amplifies an amplitude phase modulation signal or a phase modulation signal (phase path signal) in accordance with the target gain set by the gain setting section (160).

摘要翻译： 提供了一种传输电路，其能够补偿当切换操作模式时由于温度变化或单独变化而引起的输出功率的变化，而不增加在线性操作模式和线性操作模式之间切换操作模式的传输电路的尺寸 非线性运算模式，能够抑制发送信号质量的恶化。 在发送电路中，增益设定部（160）将可变增益放大器（140）的增益（目标增益）设定为允许可变增益放大器（140）线性运行并对应于比较结果（ 输出误差电平），其与通过发送信号的设定功率电平相对应的可变增益放大器（140）的目标电平与通过功率检测检测到的可变增益放大器（140）的输出信号的功率电平 （150）。 可变增益放大器（140）根据由增益设定部（160）设定的目标增益来放大幅度相位调制信号或相位调制信号（相位路径信号）。

公开(公告)号：US20120093044A1

公开(公告)日：2012-04-19

申请号：US13380094

申请日：2010-04-14

申请人： Kaoru Ishida

发明人： Kaoru Ishida

IPC分类号： H04B7/00 ,  H04J3/00

CPC分类号： H04B1/0067

摘要： Provided is a multiband wireless apparatus that, even if the number of supported frequency bands increases, suppresses increase in the number of components, and completes cell search within a specified time. In a multiband wireless apparatus (1), a reception channel to which a current reception channel is going to be next switched is set in advance for one of a tunable duplexer (13) and a reception dedicated tunable filter (14) that is not connected to an antenna. An antenna switch (15), in a normal transmission/reception mode, connects the antenna to the tunable duplexer (13), and in a compressed mode, switches the connection of the antenna between the tunable duplexer (13) and the reception dedicated tunable filter (14).

摘要翻译： 提供了一种多频带无线装置，即使所支持的频带的数量增加，也抑制了分量的增加，并且在规定的时间内完成小区搜索。 在多频无线装置（1）中，对于未连接的可调谐双工器（13）和接收专用可调谐滤波器（14）中的一个，预先设定要接下来切换当前接收信道的接收信道 到天线。 在正常发送/接收模式下的天线开关（15）将天线连接到可调谐双工器（13），并且在压缩模式下，切换天线在可调谐双工器（13）和接收专用可调谐器 过滤器（14）。

公开(公告)号：US07912148B2

公开(公告)日：2011-03-22

申请号：US11878902

申请日：2007-07-27

申请人： Toru Matsuura ,  Kaoru Ishida

发明人： Toru Matsuura ,  Kaoru Ishida

IPC分类号： H04K1/02 ,  H04L25/03 ,  H04L25/49

CPC分类号： H04B1/0483 ,  H03C5/00 ,  H03F1/0205 ,  H03F1/0211 ,  H03F1/32 ,  H03F1/3241 ,  H03F3/245 ,  H03F2200/324 ,  H03F2200/447 ,  H03F2200/468 ,  H03F2200/504 ,  H04B1/0475 ,  H04B2001/0425 ,  H04L27/361

摘要： A transmission circuit precisely compensates for an offset characteristic of an amplitude modulation section and operates with low distortion and high efficiency over a wide output power range. A signal generation section outputs an amplitude signal and an angle-modulated signal. An amplitude amplifying section supplies, to the amplitude modulation section, a voltage corresponding to a magnitude of an inputted amplitude signal. The amplitude modulation section amplitude-modulates the angle-modulated signal by the voltage supplied from the amplitude amplifying section, thereby outputting a resultant signal as a modulation signal. A temperature measuring section measures a temperature of the amplitude modulation section. An offset compensation section calculates an offset compensation value in accordance with a change, in temperature of the amplitude modulation section, from the temperature of the amplitude modulation section in an initial state, and adds the calculated offset compensation value to the amplitude signal.

摘要翻译： 传输电路精确地补偿幅度调制部分的偏移特性，并在宽输出功率范围内以低失真和高效率工作。 信号生成部输出振幅信号和角度调制信号。 振幅放大部分向幅度调制部分提供对应于输入的振幅信号的幅度的电压。 幅度调制部分通过从幅度放大部分提供的电压来对角度调制信号进行幅度调制，从而输出作为调制信号的合成信号。 温度测量部分测量幅度调制部分的温度。 偏移补偿部根据初始状态下的振幅调制部的温度，根据振幅调制部的温度的变化来计算偏移补偿值，并将计算出的偏移补偿值与幅度信号相加。

公开(公告)号：US07760043B2

公开(公告)日：2010-07-20

申请号：US12280975

申请日：2007-02-27

申请人： Maki Nakamura ,  Kaoru Ishida

发明人： Maki Nakamura ,  Kaoru Ishida

IPC分类号： H03C3/00 ,  H03C3/38

CPC分类号： H03F3/189 ,  H03C5/00 ,  H03F3/24 ,  H03F2200/324 ,  H03F2200/504 ,  H04L27/361

摘要： Provided is a polar modulation apparatus capable of performing power limit with a simple configuration even when controlling a transmission power and increasing the transmission signal output power control range. A polar modulation device (1) includes an amplitude limit unit (6) for limiting an amplitude component of an amplitude signal, a D/A converter (7) for converting an inputted digital signal into an analog signal, a power control unit (8) for performing power control so that the inputted signal is an output signal based on the power control signal, a voltage control circuit (9) for supplying voltage to an amplitude modulator (11) according to the output signal from the power control unit (8), an angle modulator (10) for performing angle modulation according to a phase signal, and an amplitude modulator (11) for performing amplitude modulation on the signal subjected to angle modulation, according to the voltage supplied from the voltage control circuit (9).

摘要翻译： 提供一种即使在控制发送功率并增加发送信号输出功率控制范围时也能够以简单的配置进行功率限制的极地调制装置。 极化调制装置（1）包括用于限制幅度信号的振幅分量的振幅限制单元（6），用于将输入的数字信号转换为模拟信号的D / A转换器（7），功率控制单元（8 ），用于执行功率控制，使得输入信号是基于功率控制信号的输出信号;电压控制电路（9），用于根据来自功率控制单元（8）的输出信号向幅度调制器（11）提供电压 ），用于根据相位信号进行角度调制的角度调制器（10），以及用于根据从电压控制电路（9）提供的电压对经过角度调制的信号进行幅度调制的幅度调制器（11） 。