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1. 发明授权

US08369801B2 Multimode-compatible polar modulation transmission device and multimode radio communication method 有权
标题翻译：多模兼容极地调制传输设备和多模无线电通信方式
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。

2. 发明授权

US08340617B2 Sampling mixer, quadrature demodulator, and wireless device 有权
标题翻译：采样混频器，正交解调器和无线设备
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。

3. 发明申请

US20120049926A1 HARMONIC REJECTION MIXER 有权
标题翻译：谐波抑制混合器
公开(公告)号：US20120049926A1
公开(公告)日：2012-03-01
申请号：US13143789
申请日：2010-01-29
申请人： Yoshito Shimizu , Noriaki Saito , Kiyomichi Araki , Takafumi Nasu
发明人： Yoshito Shimizu , Noriaki Saito , Kiyomichi Araki , Takafumi Nasu
IPC分类号： G06G7/12
CPC分类号： H03D7/165 , H03D2200/0086
摘要： Disclosed is a harmonic rejection mixer that makes it possible to suppress high-frequency response, while keeping the number of gm elements from increasing. In a harmonic rejection mixer that regulates the waveform of an output signal by mixing outputs of multiple mixers that are connected in parallel with the latter stage of multiple gm elements, some of the gm elements are shared by I phase and Q phase by using a control signal with a duty ratio of less than 50% to drive at least some of the mixers, and then using the period in which the I-phase mixers are inactive to activate the Q-phase mixers.
摘要翻译：公开了一种谐波抑制混频器，其能够抑制高频响应，同时保持gm元件的数量不增加。在通过混合与多个gm元件的后级并联连接的多个混频器的输出来调节输出信号的波形的谐波抑制混频器中，一些gm元件由I相和Q相共享，通过使用控制信号，占空比小于50％，以驱动至少一些混频器，然后使用I相混频器无效的周期来激活Q相混频器。

4. 发明授权

US07915969B2 Distortion compensating circuit 有权
标题翻译：失真补偿电路
公开(公告)号：US07915969B2
公开(公告)日：2011-03-29
申请号：US12342551
申请日：2008-12-23
申请人： Yoshito Shimizu , Noriaki Saito
发明人： Yoshito Shimizu , Noriaki Saito
IPC分类号： H03C3/00 , H03F1/32 , H03F3/24 , H04B1/04 , H04L27/20
CPC分类号： H04L27/367 , H03F1/3282
摘要： A distortion compensating circuit is provided in which, in the polar modulation system, while suppressing increase of compensation data and increase of the circuit scale, a modulated signal can be correctly expressed, or low-distortion characteristics of a power amplifier can be realized. Based on a steady characteristic compensating circuit 11 which stores an output signal amplitude and output phase characteristics with respect to a control voltage in a steady state, amplitude adjustment is executed on amplitude information r11(t) on which amplitude correction is performed, by a first amplitude information adjusting portion 13, whereby the output-response characteristics of an output signal amplitude of an amplifier with respect to a change of the control voltage can be improved.
摘要翻译：提供了一种失真补偿电路，其中在极坐标调制系统中，在抑制补偿数据的增加和电路规模的增加的同时，可以正确地表达调制信号，或者能够实现功率放大器的低失真特性。基于稳定特性补偿电路11，其以相对于稳定状态的控制电压存储输出信号振幅和输出相位特性，对其进行幅度校正的振幅信息r11（t）执行幅度调整，第一幅度信息调整部分13，从而可以提高放大器的输出信号幅度相对于控制电压变化的输出响应特性。

5. 发明授权

US07907589B2 Reception apparatus and reception method 有权
标题翻译：接收方式和接收方式
公开(公告)号：US07907589B2
公开(公告)日：2011-03-15
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： H04J3/00 , H04B1/04 , H04B1/06 , H04L27/08
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。

6. 发明授权

US07778612B2 Polar modulation circuit, integrated circuit and radio apparatus 有权
标题翻译：极性调制电路，集成电路和无线电设备
公开(公告)号：US07778612B2
公开(公告)日：2010-08-17
申请号：US11912169
申请日：2006-04-17
申请人： Yoshito Shimizu , Noriaki Saito
发明人： Yoshito Shimizu , Noriaki Saito
IPC分类号： H04B1/04 , H04B1/62
CPC分类号： H03F1/0222 , H03F1/3282
摘要： An object of the invention is to provide a polar modulation circuit capable of reducing the capacity of data stored in memory and suppressing an increase in the circuit scale related to distortion compensation while assuring the compensation accuracy. The polar modulation circuit according to the invention stores output signal characteristic relative to the control voltage at the steady state after input of the control voltage for a predetermined input amplitude of an input high frequency signal as the basis of distortion compensation of an amplifier separately into an offset storage section 101a which stores data used to add a predetermined DC offset voltage and a coefficient storage section 102 which stores data used for multiplication by a predetermined constant, thus reducing the circuit scale related to distortion compensation while assuring the compensation accuracy.
摘要翻译：本发明的目的是提供一种极性调制电路，其能够降低存储在存储器中的数据的容量，并且在确保补偿精度的同时抑制与失真补偿相关的电路规模的增加。根据本发明的极坐标调制电路将输入的高频信号的预定输入幅度的控制电压输入后的稳定状态下的输出信号特性存储为放大器的失真补偿的基础，偏移存储部分101a，其存储用于添加预定DC偏移电压的数据;以及系数存储部分102，其存储用于乘以预定常数的数据，从而在确保补偿精度的同时减小与失真补偿相关的电路规模。

7. 发明授权

US07715841B2 Radio communication system base station and mobile station 有权
标题翻译：无线电通信系统基站和移动台
公开(公告)号：US07715841B2
公开(公告)日：2010-05-11
申请号：US10572978
申请日：2004-10-01
申请人： Yoshifumi Hosokawa , Noriaki Saito , Katsuaki Abe , Michiaki Matsuo , Yoshito Shimizu , Junji Sato
发明人： Yoshifumi Hosokawa , Noriaki Saito , Katsuaki Abe , Michiaki Matsuo , Yoshito Shimizu , Junji Sato
IPC分类号： H04Q7/20
CPC分类号： H04W88/06 , H04W40/246 , H04W48/08 , H04W92/02 , H04W92/10
摘要： A radio communication system includes a base station of a radio communication system A, a base station of a radio communication system B operation in non-synchronized way with the base station, and a mobile station capable of communicating with both of the radio communication system A and the radio communication system B. The base station includes a radio unit for transmitting/receiving a radio wave to/from the mobile station and a system information estimation unit for estimating the system information on the radio communication system B and outputting the system estimation information. The radio unit of the base station reports the system estimation information on the base station to the mobile station. The mobile station receives the system estimation information on the base station in advance so as to perform effective switching without using a cabled connection from the radio communication system A to the radio communication system B via a relay device or the like.
摘要翻译：无线通信系统包括无线通信系统A的基站，无线通信系统B的与基站非同步的操作的基站，以及能够与无线通信系统A通信的移动台和无线通信系统B.基站包括用于向移动台发送/接收无线电波的无线电单元和用于估计无线电通信系统B的系统信息的系统信息估计单元，并输出系统估计信息。基站的无线单元向移动台报告基站的系统估计信息。移动站预先在基站上接收系统估计信息，以便不经由中继装置等从无线通信系统A向无线通信系统B的电缆连接进行有效的切换。

8. 发明授权

US07272187B2 Filter circuit and radio apparatus 失效
标题翻译：滤波电路和无线电设备
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。

9. 发明申请

US20070120617A1 Modulation apparatus and modulation method 审中-公开
标题翻译：调制装置及调制方式
公开(公告)号：US20070120617A1
公开(公告)日：2007-05-31
申请号：US10576304
申请日：2004-10-21
申请人： Junji Sato , Michiaki Matsuo , Noriaki Saito , Yoshito Shimizu
发明人： Junji Sato , Michiaki Matsuo , Noriaki Saito , Yoshito Shimizu
IPC分类号： H03C3/09
CPC分类号： H03F3/24 , H03F1/32 , H03F2200/331 , H04L27/20 , H04L27/36 , H04L2027/003 , H04L2027/0067
摘要： A modulation apparatus which can be applied to the conventional analog PLL modulation system without using an enormous reference table, enables a phase distortion to be compensated accurately without requiring timing control with high accuracy, and can be applied to communication systems that do not perform amplitude modulation. In this apparatus, a signal generation section (101) generates a baseband phase signal. A phase distortion compensation section (102) obtains a phase distortion by multiplying a magnitude of a frequency change at predetermined time or magnitude of phase change between adjacent data of the baseband phase signal by a parameter specific to the apparatus, and thereby compensates the baseband phase signal for the phase distortion. A storage section (103) stores the parameter and calculation equation. A modulation section (105) modulates a frequency converted signal input from a frequency conversion section (104) using the baseband phase signal to generate a modulated signal.
摘要翻译：可以应用于传统的模拟PLL调制系统而不使用庞大的参考表的调制装置使得能够精确地补偿相位失真，而不需要高精度的定时控制，并且可以应用于不执行幅度调制的通信系统。在该装置中，信号生成部（101）生成基带相位信号。相位失真补偿部（102）通过将基带相位信号的相邻数据之间的相位变化的规定时间或相位变化量的频率乘以设备特有的参数来获得相位失真，从而补偿基带相位信号用于相位失真。存储部（103）存储参数和计算式。调制部（105）使用基带相位信号调制从频率变换部（104）输入的变频信号，生成调制信号。

10. 发明申请

US20070099580A1 Frequency dividing circuit and multimode radio device using the same 有权
标题翻译：分频电路和使用其的多模无线电设备
公开(公告)号：US20070099580A1
公开(公告)日：2007-05-03
申请号：US10596820
申请日：2005-03-02
申请人： Yoshifumi Hosokawa , Noriaki Saito , Michiaki Matsuo , Yoshito Shimizu
发明人： Yoshifumi Hosokawa , Noriaki Saito , Michiaki Matsuo , Yoshito Shimizu
IPC分类号： H04B1/40 , H04B7/00
CPC分类号： H04B1/0082 , H03D7/166
摘要： In a multimode radio, as many frequency dividers as the number of radio systems become necessary and the circuit scale of a frequency dividing section becomes large. A frequency dividing section 22 is made up of a frequency divider 19 for dividing output of a local oscillator, a frequency divider 20 for dividing output of an in-phase local oscillation signal of the frequency divider 19, and a dummy circuit 21 connected to the output terminal of a quadrature local oscillation signal of the frequency divider 19. At the first frequency band operation time, output of the frequency divider 19 is used for modulation and demodulation and at the second frequency band operation time, output of the frequency divider 20 is used for modulation and demodulation. Although the frequency divider 19 is shared between the first and second frequency bands, the dummy circuit is made the same circuit as an input amplifier of the frequency divider 20 at the first frequency band operation time, so that the phase difference between the in-phase local oscillation signal and the quadrature local oscillation signal output by the frequency divider 19 can be kept. Accordingly, the frequency dividers are shared and combined for lessening the circuit scale.
摘要翻译：在多模无线电中，与无线电系统的数量一样多的分频器变得必要，并且分频部分的电路规模变大。分频部分22由用于分频本地振荡器的输出的分频器19，用于分频分频器19的同相本地振荡信号的输出的分频器20和连接到分频器19的虚拟电路21组成。分频器19的正交本地振荡信号的输出端子。在第一频带操作时间，分频器19的输出用于调制和解调，并且在第二频带操作时间，分频器20的输出用于调制和解调。虽然分频器19在第一和第二频带之间共享，但是在第一频带操作时间，使虚设电路与分频器20的输入放大器相同，使得同相可以保持由分频器19输出的本地振荡信号和正交本地振荡信号。因此，分频器被共享并组合以减小电路规模。

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