公开(公告)号：US20070082629A1

公开(公告)日：2007-04-12

申请号：US10581036

申请日：2004-11-30

申请人： Yoshito Shimizu ,  Noriaki Saito

发明人： Yoshito Shimizu ,  Noriaki Saito

IPC分类号： H01Q11/12

CPC分类号： H04W52/08 ,  H03G3/3052 ,  H04W52/10 ,  H04W52/143

摘要： A reception apparatus capable of preventing saturation and sensitivity degradation of a receiver when base transceiver station transmit power control is performed and calibrating offset voltage without increasing the amount of current consumption. In this apparatus, a gain setting section (109) estimates reception field intensity of each time slot in the next frame based on information of the reception field intensity and transmit power information which is information of the transmit power of the base transceiver station and calculates a gain set value according to the estimated reception field intensity. A gain control circuit (110) extracts a maximum gain out of the gains set by the gain setting section (109), uses the maximum gain as a set gain for DC offset voltage calibration and performs gain control at the gain set value corresponding to each time slot. A voltage calibration circuit (111) performs the DC offset voltage calibration of the received signal.

摘要翻译： 当基站发射功率控制被执行并且校准失调电压而不增加电流消耗量时，能够防止接收机饱和和灵敏度退化的接收装置。 在该装置中，增益设定部（109）基于作为基站的发射功率的信息的接收场强的信息和发送功率信息来估计下一帧中的每个时隙的接收场强，并且计算 根据估计的接收场强度增益设定值。 增益控制电路（110）从增益设定部（109）提取的增益中提取出最大增益，使用最大增益作为直流偏移电压校准的设定增益，并以对应于每个的增益设定值进行增益控制 时隙。 电压校准电路（111）对接收到的信号进行DC偏移电压校准。

公开(公告)号：US06331804B1

公开(公告)日：2001-12-18

申请号：US09487849

申请日：2000-01-19

申请人： Yoshito Shimizu ,  Noriaki Saito ,  Hiroyuki Yabuki

发明人： Yoshito Shimizu ,  Noriaki Saito ,  Hiroyuki Yabuki

IPC分类号： H03G330

CPC分类号： H03F3/191 ,  H03F2200/372 ,  H03G1/0088

摘要： In a cascade amplifier, the collector of a first transistor with a grounded emitter and the emitter of a second transistor are connected. A third transistor has the base grounded at radio frequency, the emitter connected to the base of the first transistor, and the collector connected to the collector of the second transistor. A fourth transistor connected to the emitter of the third transistor works as a constant current source. A bias changeover circuit supplies base biases of these transisiors. In this constitution, by using the bias changeover circuit for changing over the bias depending on the cut-off condition of the first transistor, the gain is changed over by making either the cascade amplifier or the third transistor operate.

摘要翻译： 在级联放大器中，连接具有接地发射极和第二晶体管的发射极的第一晶体管的集电极。 第三晶体管具有以射频接地的基极，发射极连接到第一晶体管的基极，并且集电极连接到第二晶体管的集电极。 连接到第三晶体管的发射极的第四晶体管用作恒流源。 偏置转换电路提供这些变压器的基极偏置。 在这种结构中，通过使用偏置切换电路根据第一晶体管的截止条件来改变偏置，通过使级联放大器或第三晶体管工作来改变增益。

公开(公告)号：US08340617B2

公开(公告)日：2012-12-25

申请号：US12745240

申请日：2008-12-10

申请人： Yoshifumi Hosokawa ,  Yoshito Shimizu ,  Tadashi Morita ,  Atsushi Maruyama

发明人： Yoshifumi Hosokawa ,  Yoshito Shimizu ,  Tadashi Morita ,  Atsushi Maruyama

IPC分类号： H04B1/26

CPC分类号： H03H15/00 ,  H03D3/007 ,  H03H19/004 ,  H04B1/0017

摘要： There are provided a sampling mixer, quadrature demodulator, and a wireless device capable of suppressing receiving sensitivity degradation caused by alias components or second-order distortion components. In the sampling mixer (101), a sampling switch (5) and another sampling switch (36) sample a reception signal based on a local signal with a predetermined frequency. A control signal generator (15) generates a control signal for controlling a filter operation. An in-phase mixer (2) and a reverse-phase mixer (3) perform, based on the control signal, filter processing on the sample signal obtained by the sampling switch (5). A delay controller (117) controls the phase difference between the local signal and the control signal according to a reception-desired frequency.

摘要翻译： 提供了能够抑制由别名分量或二阶失真分量引起的接收灵敏度劣化的采样混频器，正交解调器和无线装置。 在采样混频器（101）中，采样开关（5）和另一采样开关（36）基于具有预定频率的本地信号对接收信号进行采样。 控制信号发生器（15）产生用于控制滤波器操作的控制信号。 同相混合器（2）和反相混合器（3）根据控制信号执行由采样开关（5）获得的采样信号的滤波处理。 延迟控制器（117）根据接收期望频率来控制本地信号和控制信号之间的相位差。

公开(公告)号：US08391818B2

公开(公告)日：2013-03-05

申请号：US13256890

申请日：2010-04-02

申请人： Tadashi Morita ,  Yoshito Shimizu

发明人： Tadashi Morita ,  Yoshito Shimizu

IPC分类号： H04B1/10 ,  H04B1/00

CPC分类号： H04B1/30 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1483 ,  H03D7/1491 ,  H03D2200/0047 ,  H03F1/3211 ,  H03F1/3247 ,  H03F3/45183 ,  H03F3/45937 ,  H03F2200/451 ,  H03F2203/45481 ,  H04L25/06

摘要： A second-order distortion correcting receiver and a second-order distortion correcting method, wherein second-order inter-modulation distortion can be cancelled with high precision and with a simple circuit configuration, without requiring a complicated adjustment step. A non-linear active element unit (110) performs non-linear processing on an input signal to output a differential output signal and common mode output signal. A common mode detection unit (120) extracts the common mode output signal. A weighting unit (130) weights the extracted common mode output signal and thereby generates a corrected signal. A corrected signal injection unit (140) injects the corrected signal into a differential output signal to output a corrected differential output signal. A DC detection unit (150) calculates the average DC component of the corrected differential output signal. A weight determining unit (160) uses the average DC component to determine the weighting coefficient used by the weighting unit (130). At this time, the weight determining unit (160) sets, as the weighting coefficient, the coefficient that reduces the average DC component included in the corrected differential output signal to zero.

摘要翻译： 二阶失真校正接收机和二阶失真校正方法，其中可以以高精度和简单的电路配置来消除二阶互调失真，而不需要复杂的调整步骤。 非线性有源元件单元（110）对输入信号执行非线性处理，以输出差分输出信号和共模输出信号。 共模检测单元（120）提取共模输出信号。 加权单元（130）对所提取的共模输出信号进行加权，从而生成校正信号。 校正信号注入单元（140）将校正的信号注入差分输出信号以输出校正的差分输出信号。 DC检测单元（150）计算校正的差分输出信号的平均DC分量。 权重确定单元（160）使用平均DC分量来确定加权单元（130）使用的加权系数。 此时，权重确定单元160将校正的差分输出信号中包括的平均DC分量降低到零的系数作为加权系数。

公开(公告)号：US08050637B2

公开(公告)日：2011-11-01

申请号：US12159469

申请日：2006-12-26

申请人： Yoshito Shimizu ,  Tomoya Urushihara

发明人： Yoshito Shimizu ,  Tomoya Urushihara

IPC分类号： H04B1/02

CPC分类号： H03F3/24 ,  H03F1/02 ,  H03F1/3223 ,  H03F1/3229 ,  H03F1/3241 ,  H03F2200/468 ,  H03F2201/3212 ,  H04B1/0475 ,  H04B2001/0425

摘要： An object of the invention is to provide a polar modulation transmitter that can perform adaptive distortion compensation processing without the need for a synchronization adjustment circuit for synchronizing an input baseband signal and an output signal of a power amplifier. An adaptive operation control section 1501 measures the unbalance amount of an output spectrum of a power amplifier 1 and a coefficient adjustment determination section of the adaptive operation control section 1501 performs iteration control so that if the unbalance amount is equal to or greater than a predetermined threshold value, coefficient information output to a distortion compensation processing circuit 1301 is adjusted and an adjustment is made to distortion compensation processing in the distortion compensation processing circuit 1301 and if the unbalance amount is less than the predetermined threshold value, the coefficient information is maintained, whereby the characteristic change of the power amplifier 1 at the environmental temperature change time can be adaptively compensated for without using a synchronization adjustment circuit for synchronizing an input baseband signal and an output signal from the power amplifier 1.

摘要翻译： 本发明的一个目的是提供一种能够进行自适应失真补偿处理的极性调制发射机，而不需要用于同步输入基带信号和功率放大器的输出信号的同步调整电路。 自适应操作控制部分1501测量功率放大器1的输出频谱的不平衡量，并且自适应操作控制部分1501的系数调整确定部分执行迭代控制，使得如果不平衡量等于或大于预定阈值 输出到失真补偿处理电路1301的系数信息被调整，并且对失真补偿处理电路1301中的失真补偿处理进行调整，并且如果不平衡量小于预定阈值，则保持系数信息，从而 能够自适应地补偿功率放大器1在环境温度变化时间的特性变化，而不使用用于使输入基带信号同步的同步调整电路和来自功率放大器1的输出信号。

公开(公告)号：US20100291885A1

公开(公告)日：2010-11-18

申请号：US12159121

申请日：2006-12-26

申请人： Yoshito Shimizu ,  Akihiko Matsuoka ,  Tomoya Urushihara

发明人： Yoshito Shimizu ,  Akihiko Matsuoka ,  Tomoya Urushihara

IPC分类号： H04B1/04

CPC分类号： H04B1/0483 ,  H03F1/0222 ,  H03F1/3241 ,  H04B2001/0425

摘要： An object of the invention is to provide a multimode polar modulation device and a multimode radio communication method for making it possible to decrease the distortion compensation processing data capacity while maintaining the distortion compensation accuracy and also making it possible to efficiently store the distortion compensation processing data corresponding to a multimode modulation signal adaptively acquired in memory.At the distortion compensation coefficient calibration operation time of a polar modulation circuit 1901, a control section 1903 selects a modulation signal with a narrower dynamic range of amplitude signal than at the transmission operation time, an adaptive operation control section 1711 measures a spectrum in output of a power amplifier 1 for each predetermined output level, and a distortion compensation processing circuit 1701 finds optimum coefficient information. On the other hand, at the transmission operation time, the optimum coefficient information found according to the above-mentioned procedure is referenced and the optimum coefficient information of a modulation signal with a wide dynamic range of amplitude signal is found.

摘要翻译： 本发明的目的是提供一种多模极化调制装置和多模式无线电通信方法，用于在保持失真补偿精度的同时降低失真补偿处理数据容量，并且还可以有效地存储失真补偿处理数据 对应于在存储器中自适应地获取的多模式调制信号。 在极坐标调制电路1901的失真补偿系数校准操作时间，控制部1903选择振幅信号的动态范围比传输动作时间窄的调制信号，自适应动作控制部1711测定输出的频谱 用于每个预定输出电平的功率放大器1，并且失真补偿处理电路1701找到最佳系数信息。 另一方面，在发送操作时间，参考根据上述过程找到的最佳系数信息，并且找到具有宽幅度信号动态范围的调制信号的最佳系数信息。

公开(公告)号：US20100222015A1

公开(公告)日：2010-09-02

申请号：US12159469

申请日：2006-12-26

申请人： Yoshito Shimizu ,  Tomoya Urushihara

发明人： Yoshito Shimizu ,  Tomoya Urushihara

IPC分类号： H04B1/02

CPC分类号： H03F3/24 ,  H03F1/02 ,  H03F1/3223 ,  H03F1/3229 ,  H03F1/3241 ,  H03F2200/468 ,  H03F2201/3212 ,  H04B1/0475 ,  H04B2001/0425

摘要： An object of the invention is to provide a polar modulation transmitter that can perform adaptive distortion compensation processing without the need for a synchronization adjustment circuit for synchronizing an input baseband signal and an output signal of a power amplifier. An adaptive operation control section 1501 measures the unbalance amount of an output spectrum of a power amplifier 1 and a coefficient adjustment determination section of the adaptive operation control section 1501 performs iteration control so that if the unbalance amount is equal to or greater than a predetermined threshold value, coefficient information output to a distortion compensation processing circuit 1301 is adjusted and an adjustment is made to distortion compensation processing in the distortion compensation processing circuit 1301 and if the unbalance amount is less than the predetermined threshold value, the coefficient information is maintained, whereby the characteristic change of the power amplifier 1 at the environmental temperature change time can be adaptively compensated for without using a synchronization adjustment circuit for synchronizing an input baseband signal and an output signal from the power amplifier 1.

摘要翻译： 本发明的一个目的是提供一种能够进行自适应失真补偿处理的极性调制发射机，而不需要用于同步输入基带信号和功率放大器的输出信号的同步调整电路。 自适应操作控制部分1501测量功率放大器1的输出频谱的不平衡量，并且自适应操作控制部分1501的系数调整确定部分执行迭代控制，使得如果不平衡量等于或大于预定阈值 输出到失真补偿处理电路1301的系数信息被调整，并且对失真补偿处理电路1301中的失真补偿处理进行调整，并且如果不平衡量小于预定阈值，则保持系数信息，从而 能够自适应地补偿功率放大器1在环境温度变化时间的特性变化，而不使用用于使输入基带信号同步的同步调整电路和来自功率放大器1的输出信号。

公开(公告)号：US20110279164A1

公开(公告)日：2011-11-17

申请号：US13146085

申请日：2010-01-29

申请人： Yoshito Shimizu ,  Yohei Morishita

发明人： Yoshito Shimizu ,  Yohei Morishita

IPC分类号： G06G7/12

CPC分类号： H03D7/1441 ,  H03D7/1466 ,  H03D7/1483

摘要： Disclosed is a mixer able to simultaneously suppress self-mixing and low-order harmonic response in a charge sampling circuit. Specifically disclosed is a multiphase mixer provided with a transconductance amplifier (101) for converting a voltage signal into a current signal, an N number (where N is a natural number that is 2 or more) of first integrators (401, 402) which are connected in parallel to the subsequent stage of the transconductance amplifier (101), and a 2N number of mixers (102, 103, 104, 105) connected in parallel in pairs to the respective N number of first integrators (401, 402), wherein two mixers connected to the same first integrator of any of the N number of first integrators (401, 402) are controlled by driving signals comprised of pulse trains with the same frequency and phases differing by 180°.

摘要翻译： 公开了能够同时抑制充电采样电路中的自混合和低次谐波响应的混频器。 具体公开了一种多相混频器，其具有用于将电压信号转换为电流信号的跨导放大器（101），第一积分器（401,402）的N数（其中N为2以上的自然数）为 与跨导放大器（101）的后续级并联连接，并且2N个混合器（102,103,104,105）成对并联连接到相应的N个第一积分器（401,402），其中 连接到N个第一积分器（401,402）中的任一个的相同第一积分器的两个混频器由具有相同频率和相位相差180°的脉冲串组成的驱动信号来控制。

公开(公告)号：US08369801B2

公开(公告)日：2013-02-05

申请号：US12159121

申请日：2006-12-26

申请人： Yoshito Shimizu ,  Akihiko Matsuoka ,  Tomoya Urushihara

发明人： Yoshito Shimizu ,  Akihiko Matsuoka ,  Tomoya Urushihara

IPC分类号： H04B1/66 ,  H04B17/00 ,  H04B1/04 ,  H03C3/00

CPC分类号： H04B1/0483 ,  H03F1/0222 ,  H03F1/3241 ,  H04B2001/0425

摘要： An object of the invention is to provide a multimode polar modulation device and a multimode radio communication method for making it possible to decrease the distortion compensation processing data capacity while maintaining the distortion compensation accuracy and also making it possible to efficiently store the distortion compensation processing data corresponding to a multimode modulation signal adaptively acquired in memory.At the distortion compensation coefficient calibration operation time of a polar modulation circuit 1901, a control section 1903 selects a modulation signal with a narrower dynamic range of amplitude signal than at the transmission operation time, an adaptive operation control section 1711 measures a spectrum in output of a power amplifier 1 for each predetermined output level, and a distortion compensation processing circuit 1701 finds optimum coefficient information. On the other hand, at the transmission operation time, the optimum coefficient information found according to the above-mentioned procedure is referenced and the optimum coefficient information of a modulation signal with a wide dynamic range of amplitude signal is found.

摘要翻译： 本发明的目的是提供一种多模极化调制装置和多模式无线电通信方法，用于在保持失真补偿精度的同时降低失真补偿处理数据容量，并且还可以有效地存储失真补偿处理数据 对应于在存储器中自适应地获取的多模式调制信号。 在极坐标调制电路1901的失真补偿系数校准操作时间，控制部1903选择振幅信号的动态范围比传输动作时间窄的调制信号，自适应动作控制部1711测定输出的频谱 用于每个预定输出电平的功率放大器1，并且失真补偿处理电路1701找到最佳系数信息。 另一方面，在发送操作时间，参考根据上述过程找到的最佳系数信息，并且找到具有宽幅度信号动态范围的调制信号的最佳系数信息。

公开(公告)号：US07272187B2

公开(公告)日：2007-09-18

申请号：US10513792

申请日：2003-11-04

申请人： Yoshito Shimizu

发明人： Yoshito Shimizu

IPC分类号： H04B3/00

CPC分类号： H03H11/04

摘要： A distributor 103 distributes an input signal into two lines of distributed signals with equal amplitudes and equal phases. Buffers 104, 105 suppress interference between distributed signals distributed into the two lines. A filter 106 performs a frequency selection which allows only a distributed signal in a predetermined band to pass. A differential amplifier 107 outputs a difference in amplitude components between a distributed signal frequency-selected by the filter 106 and the distributed signal which is not frequency-selected. This allows an attenuation characteristic or passage characteristic in a high-frequency band to be maintained.

摘要翻译： 分配器103将输入信号分配成具有相等振幅和相等相位的两行分布信号。 缓冲器104,105抑制分布在两条线路中的分布式信号之间的干扰。 滤波器106执行仅允许预定频带中的分布式信号通过的频率选择。 差分放大器107输出由滤波器106选择的分布式信号与未频率选择的分布式信号之间的振幅分量的差。 这允许保持高频带中的衰减特性或通过特性。