公开(公告)号：US20100188169A1

公开(公告)日：2010-07-29

申请号：US12665177

申请日：2007-08-07

申请人： Sorwar Hossain ,  Yasuyuki Oishi

发明人： Sorwar Hossain ,  Yasuyuki Oishi

IPC分类号： H03H7/01

CPC分类号： H04B1/18 ,  H01P1/18 ,  H01P5/04

摘要： A reactance varying device comprises a voltage-controlled variable-capacitance circuit, a biasing circuit and an impedance transformer. The biasing circuit has a virtual AC ground node, which acts as a gateway to supply a bias voltage to the variable-capacitance circuit. The impedance transformer separates the variable-capacitance circuit from the AC ground node, as well as provides an inductive element to form a reactance varying LC tank.

摘要翻译： 电抗变换装置包括压控可变电容电路，偏置电路和阻抗变换器。 偏置电路具有虚拟AC接地节点，其作为向可变电容电路提供偏置电压的网关。 阻抗变压器将可变电容电路与交流接地节点分开，并提供电感元件以形成电抗变化液晶盒。

公开(公告)号：US07973522B2

公开(公告)日：2011-07-05

申请号：US12005380

申请日：2007-12-27

申请人： Takeshi Takano ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Toru Maniwa

发明人： Takeshi Takano ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Toru Maniwa

IPC分类号： G05F1/40

CPC分类号： H03F1/0227 ,  H02M3/3372 ,  H03F3/20 ,  H03F2200/228 ,  H03F2200/504

摘要： A DC/DC converter capable of controlling an output signal using a broadband signal input is provided. By employing the above DC/DC converter as a power supply, a highly efficient power amplifier can be configured. The above DC/DC converter includes two class-C amplifiers, a rectifier circuit connected between each output of the two class-C amplifiers, and an oscillator of a predetermined frequency signal. The predetermined frequency signal output from the oscillator is input to each of the two class-C amplifiers, and by controlling the phase difference of the predetermined frequency signal input to the two class-C amplifiers, the magnitude of a direct current voltage output from the rectifier circuit is made variable.

摘要翻译： 提供了能够使用宽带信号输入来控制输出信号的DC / DC转换器。 通过采用上述DC / DC转换器作为电源，可以配置高效的功率放大器。 上述DC / DC转换器包括两个C类放大器，连接在两个C类放大器的每个输出端之间的整流器电路和预定频率信号的振荡器。 从振荡器输出的预定频率信号被输入到两个C类放大器中的每一个，并且通过控制输入到两个C类放大器的预定频率信号的相位差，从 整流电路是可变的。

公开(公告)号：US07881404B2

公开(公告)日：2011-02-01

申请号：US12567510

申请日：2009-09-25

申请人： Hiroyoshi Ishikawa ,  Kazuo Nagatani ,  Hajime Hamada ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Yasuyuki Oishi

发明人： Hiroyoshi Ishikawa ,  Kazuo Nagatani ,  Hajime Hamada ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Yasuyuki Oishi

IPC分类号： H04L25/49 ,  H03C3/08

CPC分类号： H03F1/32 ,  H03F1/3241 ,  H03F1/3247 ,  H03F3/19

摘要： A distortion correction control apparatus is for compensating for a burst distortion of a transmission amplifier caused by a burst of an input signal of a transmission target. The apparatus includes a generation unit that generates a distortion correction coefficient having reverse characteristics to the foregoing burst distortion; a unit that multiplies the distortion correction coefficient output from the generation unit by the input signal or adds the distortion correction coefficient output from the generation unit to the input signal, upon reception of burst information notifying of switching between presence and absence of the input signal; and an update unit that updates, based on the input signal and a branch signal fed back as an output signal of the transmission amplifier, parameters of functions used for adaptively generating the distortion correction coefficient, and that inputs the updated parameters to the generation unit.

摘要翻译： 失真校正控制装置用于补偿由发射目标的输入信号的脉冲串引起的发射放大器的脉冲串失真。 该装置包括产生具有与上述突发畸变相反的特性的失真校正系数的生成单元; 一个单元，用于通过输入信号将从生成单元输出的失真校正系数乘以输入信号，或将从生成单元输出的失真校正系数与输入信号相加，或者将通过输入信号存在与不存在切换之间的突发信息相加; 以及更新单元，其基于所述输入信号和作为所述发送放大器的输出信号反馈的分支信号来更新用于自适应地生成所述失真校正系数的功能的参数，并且将更新的参数输入到所述生成单元。

公开(公告)号：US07746957B2

公开(公告)日：2010-06-29

申请号：US12567431

申请日：2009-09-25

申请人： Hiroyoshi Ishikawa ,  Kazuo Nagatani ,  Hajime Hamada ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Yasuyuki Oishi

发明人： Hiroyoshi Ishikawa ,  Kazuo Nagatani ,  Hajime Hamada ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Yasuyuki Oishi

IPC分类号： H04L25/49 ,  H03C3/08

CPC分类号： H03F1/3247 ,  H03F2201/3233

摘要： A distortion correction control apparatus is for compensating for a burst distortion in a transmission amplifier caused by a burst of an input signal of a transmission target. The apparatus includes a holding unit that stores a distortion correction coefficient having reverse characteristics to the burst distortion; a unit that multiplies the distortion correction coefficient read out from the holding unit by the input signal or adds the distortion correction coefficient read out from the holding unit to the input signal, upon reception of burst information notifying of switching between presence and absence of the input signal; and an update unit that updates, based on the input signal, the distortion correction coefficient of the last time, and a signal fed back as an output signal of the transmission amplifier, the distortion correction coefficient by an adaptive algorithm, and that inputs the updated distortion correction coefficient to the holding unit.

摘要翻译： 失真校正控制装置用于补偿由发送目标的输入信号的脉冲串引起的发送放大器中的脉冲串失真。 该装置包括保存单元，其存储具有与突发失真相反特性的失真校正系数; 将从保持单元读出的失真校正系数乘以输入信号的单位，或者在接收到通知输入有无之间切换的突发信息时，将从保持单元读出的失真校正系数与输入信号相加 信号; 以及更新单元，其基于输入信号更新上一次的失真校正系数，以及作为发送放大器的输出信号反馈的信号，通过自适应算法更新失真校正系数，并且输入更新的 失真校正系数到保持单元。

公开(公告)号：US20080144338A1

公开(公告)日：2008-06-19

申请号：US12005380

申请日：2007-12-27

申请人： Takeshi Takano ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Toru Maniwa

发明人： Takeshi Takano ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Toru Maniwa

IPC分类号： H02M3/335 ,  H03G9/00

CPC分类号： H03F1/0227 ,  H02M3/3372 ,  H03F3/20 ,  H03F2200/228 ,  H03F2200/504

摘要： A DC/DC converter capable of controlling an output signal using a broadband signal input is provided. By employing the above DC/DC converter as a power supply, a highly efficient power amplifier can be configured. The above DC/DC converter includes two class-C amplifiers, a rectifier circuit connected between each output of the two class-C amplifiers, and an oscillator of a predetermined frequency signal. The predetermined frequency signal output from the oscillator is input to each of the two class-C amplifiers, and by controlling the phase difference of the predetermined frequency signal input to the two class-C amplifiers, the magnitude of a direct current voltage output from the rectifier circuit is made variable.

摘要翻译： 提供了能够使用宽带信号输入来控制输出信号的DC / DC转换器。 通过采用上述DC / DC转换器作为电源，可以配置高效的功率放大器。 上述DC / DC转换器包括两个C类放大器，连接在两个C类放大器的每个输出端之间的整流器电路和预定频率信号的振荡器。 从振荡器输出的预定频率信号被输入到两个C类放大器中的每一个，并且通过控制输入到两个C类放大器的预定频率信号的相位差，从 整流电路是可变的。

公开(公告)号：US20080094139A1

公开(公告)日：2008-04-24

申请号：US12000616

申请日：2007-12-14

申请人： Takeshi Takano ,  Yasuyuki Oishi ,  Toru Maniwa

发明人： Takeshi Takano ,  Yasuyuki Oishi ,  Toru Maniwa

IPC分类号： H03F1/26

CPC分类号： H03F1/3247 ,  H03F1/30 ,  H03F1/3282 ,  H03F2201/3209 ,  H03F2201/3212 ,  H03F2201/3224 ,  H03F2201/3233

摘要： A power amplifier negates a memory effect and is applied a linearizer using a digital predistortion system even in an inexpensive device. The power amplifier compares an input signal power against a sampled component of an output power, and provides predistortion to the input signal power so as to minimize a difference as a result of the comparison. The power amplifier comprises a gain lookup table storing a gain coefficient value corresponding to a temperature address determined for an input power; a phase lookup table storing a phase coefficient value corresponding to the temperature address determined for the input power; a transversal filter, which is input with the input power, and which outputs the temperature address; and a coefficient multiplier modulating the input signal using a gain coefficient value and a phase coefficient value, which correspond to the temperature address and which are read out from the gain coefficient lookup table and the phase lookup table.

摘要翻译： 功率放大器消除了记忆效应，并且即使在廉价的设备中也使用数字预失真系统应用线性化。 功率放大器将输入信号功率与输出功率的采样分量进行比较，并且为输入信号功率提供预失真，以便作为比较的结果使差异最小化。 功率放大器包括：增益查找表，其存储对应于为输入功率确定的温度地址的增益系数值; 相位查找表，存储与为输入功率确定的温度地址对应的相位系数值; 横向滤波器，其输入有输入功率，并输出温度地址; 以及系数乘法器，其使用与所述温度地址对应并且从所述增益系数查找表和所述相位查找表读出的增益系数值和相位系数值来调制所述输入信号。

公开(公告)号：US07012969B2

公开(公告)日：2006-03-14

申请号：US09737196

申请日：2000-12-14

申请人： Takayoshi Ode ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Kazuo Nagatani ,  Hajime Hamada ,  Hiroyoshi Ishikawa

发明人： Takayoshi Ode ,  Yasuyuki Oishi ,  Tokuro Kubo ,  Kazuo Nagatani ,  Hajime Hamada ,  Hiroyoshi Ishikawa

IPC分类号： H04L25/03

CPC分类号： H03F1/3247 ,  H03F2201/3233

摘要： Disclosed is a distortion compensating apparatus for correcting the size of a distortion compensation coefficient in such a manner that a transmit signal that has undergone distortion compensation will not exceed the dynamic range of a DA converter. Specifically, before a distortion compensation coefficient hn+1(p) that has been calculated by a calculation unit is stored in a coefficient memory, an assumption is made that distortion compensation will be performed using the distortion compensation coefficient hn+1(p). Then it is determined beforehand whether a signal x(t)*hn+1(p) that will be obtained by this distortion compensation will exceed the limit of a DA converter. If the limit will be exceeded, the size of the distortion compensation coefficient is reduced by a correction unit, the corrected distortion compensation coefficient is stored in the memory and the transmit signal is corrected using the stored distortion compensation coefficient.

摘要翻译： 公开了一种失真补偿装置，用于以经过失真补偿的发送信号不会超过DA转换器的动态范围的方式校正失真补偿系数的大小。 具体地说，在由计算单元计算出的失真补偿系数h N + 1（p）被存储在系数存储器中之前，假定将使用失真补偿执行失真补偿 系数h n + 1（p）。 然后，预先确定将通过该失真补偿获得的信号x（t）* h N + 1（p）将超过DA转换器的极限。 如果超过极限，则通过校正单元来减小失真补偿系数的大小，将校正的失真补偿系数存储在存储器中，并使用所存储的失真补偿系数校正发送信号。

公开(公告)号：US06836517B2

公开(公告)日：2004-12-28

申请号：US09745948

申请日：2000-12-22

申请人： Kazuo Nagatani ,  Tokuro Kubo ,  Takayoshi Ode ,  Yasuyuki Oishi

发明人： Kazuo Nagatani ,  Tokuro Kubo ,  Takayoshi Ode ,  Yasuyuki Oishi

IPC分类号： H04K102

CPC分类号： H04L27/368 ,  H03F1/3247 ,  H03F1/3288

摘要： A distortion compensating apparatus for compensating for a distortion of a transmission power amplifier. A delay time decision unit calculates the correlation between a transmission signal and a feedback signal fed back from the output side of the transmission power amplifier while varying phase difference between both signals, and decides the total delay time caused in the transmission power amplifier and a feedback loop on the basis of the phase difference in which the correlation is the maximum. A delay unit delays the transmission signal before a distortion compensation processing by the total delay time, and inputs the delayed signal into a distortion compensating apparatus arithmetic unit, which calculates and stores a distortion compensation coefficient on the basis of the transmission signal and the feedback signal fed back from the output side of the transmission power amplifier. A pre-distortion unit applies a distortion compensation processing to the transmission signal by using the distortion compensation coefficient.

摘要翻译： 一种用于补偿发射功率放大器的失真的失真补偿装置。 延迟时间决定单元计算发送信号与从发送功率放大器的输出侧反馈的反馈信号之间的相关性，同时改变两个信号之间的相位差，并且确定在发送功率放大器中引起的总延迟时间和反馈 基于相关性最大的相位差进行循环。 延迟单元将失真补偿处理之前的发送信号延迟总延迟时间，并将延迟信号输入失真补偿装置运算单元，该运算单元基于发送信号和反馈信号计算并存储失真补偿系数 从发射功率放大器的输出侧反馈。 预失真单元通过使用失真补偿系数对发送信号应用失真补偿处理。

公开(公告)号：US06737918B2

公开(公告)日：2004-05-18

申请号：US10629134

申请日：2003-07-29

申请人： Yasuyuki Oishi ,  Tokuro Kubo ,  Kazuo Nagatani ,  Toru Maniwa

发明人： Yasuyuki Oishi ,  Tokuro Kubo ,  Kazuo Nagatani ,  Toru Maniwa

IPC分类号： H03F126

CPC分类号： H03F1/3247 ,  H03F1/3282 ,  H03F1/3294 ,  H03F1/34 ,  H03F3/24 ,  H04B2001/0433 ,  H04L27/368

摘要： An input complex base band signal x(t) is complex-multiplied by a distortion compensation coefficient h(p), quadrature-modulated by a quadrature modulator QMOD, and input into a power amplifier AMP. A part of the output from the power amplifier AMP is input into a band pass filter BPF, the band pass filter BPF extracts an adjacent channel leakage power band, and a power detector detects an adjacent channel leakage power value. A distortion compensation coefficient arithmetic unit GA using a genetic algorithm computes a distortion compensation coefficient based on an adjacent channel leakage power value on an adjacent channel leakage power ratio and an input complex base band signal x(t), and outputs a distortion compensation coefficient h(p) as a function of a power value p of the input complex base band signal.

摘要翻译： 输入复基带信号x（t）被正交调制器QMOD正交调制的失真补偿系数h（p）复乘，并输入到功率放大器AMP。 来自功率放大器AMP的输出的一部分被输入到带通滤波器BPF中，带通滤波器BPF提取相邻信道泄漏功率带，并且功率检测器检测相邻信道泄漏功率值。 使用遗传算法的失真补偿系数算术单元GA根据相邻信道泄漏功率比的相邻信道泄漏功率值和输入复基带信号x（t）计算失真补偿系数，并输出失真补偿系数h （p）作为输入复基带信号的功率值p的函数。

公开(公告)号：US06650689B1

公开(公告)日：2003-11-18

申请号：US09318446

申请日：1999-05-25

申请人： Yasuyuki Oishi ,  Kazuo Nagatani ,  Hajime Hamada ,  Yoshihiko Asano

发明人： Yasuyuki Oishi ,  Kazuo Nagatani ,  Hajime Hamada ,  Yoshihiko Asano

IPC分类号： H04B1500

CPC分类号： H04B1/7075 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7095 ,  H04B2201/70707

摘要： The present invention reduces the scale of circuitry and shortens the code phase detection time needed to achieve initial synchronization. In a correlator for calculating correlation between a received spreading code contained in a received spread-spectrum signal and a reference spreading code, a combined code generator is included. The combined code generator outputs a combined spreading code by weighting and combining a plurality of phase-shifted reference spreading codes A1-AM. Further, an arithmetic circuit calculates correlation between the received spreading code and the plurality of phase-shifted reference spreading codes simultaneously. A phase detection circuit detects the phase difference between the received spreading code and a reference spreading code, namely the phase of the received spreading code from the results of the arithmetic operation.

摘要翻译： 本发明减小了电路规模，缩短了实现初始同步所需的码相位检测时间。 在用于计算包含在接收扩展频谱信号中的接收扩展码与参考扩展码之间的相关性的相关器中，包括组合码发生器。 组合码发生器通过加权和组合多个相移参考扩展码A1-AM来输出组合扩展码。 此外，算术电路同时计算接收的扩展码与多个相移参考扩展码之间的相关性。 相位检测电路从算术运算结果检测接收到的扩展码与参考扩展码之间的相位差，即接收到的扩展码的相位。