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51. 发明授权

US06657493B2 Distortion compensation apparatus and distortion compensation method 有权
标题翻译：失真补偿装置和失真补偿方法
公开(公告)号：US06657493B2
公开(公告)日：2003-12-02
申请号：US10116633
申请日：2002-04-04
申请人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa
发明人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa
IPC分类号： H03F126
CPC分类号： H03F1/3247 , H03F1/3294
摘要： A distortion compensation apparatus returns a part of an amplified output signal of a power amplifier amplifying a transmission signal, reads a distortion compensation signal from a distortion compensation table, multiplies the transmission signal with the distortion compensation signal thereof, and inputs the signal to the power amplifier. The distortion compensation signal corresponding to a signal calculated based on an error signal that is a difference between the transmission signal and the amplified output signal, the distortion compensation signal from the distortion compensation table and the step size parameter, and to a power of the transmission signal. The distortion compensation apparatus comprises a &mgr; control part including a fast Fourier transformation part that obtains a spectrum of the amplified output signal, a calculation part that calculates an adjacent channel leakage power ratio based on the spectrum, and a &mgr; adjusting part that varies the step size parameter by comparing the calculated adjacent leakage power ratio with a threshold value.
摘要翻译：失真补偿装置返回放大发送信号的功率放大器的放大输出信号的一部分，从失真补偿表读出失真补偿信号，将发送信号与其失真补偿信号相乘，并将该信号输入到功率放大器对应于基于作为发送信号和放大输出信号之间的差的误差信号，来自失真补偿表的失真补偿信号和步长参数而计算出的信号的失真补偿信号，以及发送功率的失真补偿信号信号。失真补偿装置包括：mu控制部，包括获取放大的输出信号的频谱的快速傅里叶变换部，基于该频谱计算相邻信道泄漏功率比的计算部;以及改变步骤的mu调整部通过将计算的相邻泄漏功率比与阈值进行比较来确定尺寸参数。

52. 发明授权

US07391371B2 Radio transceiver and method of controlling direction of radio-wave emission 有权
标题翻译：无线电收发机和无线电波发射方向的控制方法
公开(公告)号：US07391371B2
公开(公告)日：2008-06-24
申请号：US10827779
申请日：2004-04-20
申请人： Hajime Hamada , Michiharu Nakamura , Yasuyuki Oishi
发明人： Hajime Hamada , Michiharu Nakamura , Yasuyuki Oishi
IPC分类号： G01S5/04
CPC分类号： H04B7/0617 , G01S1/38 , G01S3/14 , G01S3/46 , G01S5/0226 , H04B7/0626
摘要： Disclosed is a method of controlling direction of radio-wave emission of a base-station transmitter which emits radio waves upon providing the radio waves with directivity in the direction of a receiver. Two antennas of a base station that are disposed at different positions transmit first and second signals that have been spread by mutually orthogonal spreading codes. A mobile station has a phase detector for receiving the first and second signals transmitted from respective ones of the antennas and obtaining a phase difference between these signals, and a direction estimator for calculating the direction of the mobile station, as seen from the base station, based upon the phase difference and for feeding back a signal representing the calculated direction from the mobile station to the base station. The transmitter of the base station transmits data toward the receiver in the calculated direction using a directional antenna.
摘要翻译：公开了一种在向接收机的方向提供无线电波的基站发射机的无线电波发射的方向上发射无线电波的方法。设置在不同位置的基站的两个天线发送已经通过相互正交的扩展码扩展的第一和第二信号。移动站具有相位检测器，用于接收从相应天线发送的第一和第二信号，并获得这些信号之间的相位差，以及用于计算移动站的方向的方向估计器，从基站看，基于相位差，并将表示计算出的方向的信号从移动台反馈到基站。基站的发射机使用定向天线在计算出的方向上向接收机发送数据。

53. 发明授权

US06577273B2 Radio transceiver and method of controlling direction of radio-wave emission 有权
标题翻译：无线电收发机和无线电波发射方向的控制方法
公开(公告)号：US06577273B2
公开(公告)日：2003-06-10
申请号：US09746439
申请日：2000-12-21
申请人： Hajime Hamada , Michiharu Nakamura , Yasuyuki Oishi
发明人： Hajime Hamada , Michiharu Nakamura , Yasuyuki Oishi
IPC分类号： G01S504
CPC分类号： H04B7/0617 , G01S1/38 , G01S3/14 , G01S3/46 , G01S5/0226 , H04B7/0626
摘要： Disclosed is a method of controlling direction of radio-wave emission of a base-station transmitter which emits radio waves upon providing the radio waves with directivity in the direction of a receiver. Two antennas of a base station that are disposed at different positions transmit first and second signals that have been spread by mutually orthogonal spreading codes. A mobile station has a phase detector for receiving the first and second signals transmitted from respective ones of the antennas and obtaining a phase difference between these signals, and a direction estimator for calculating the direction of the mobile station, as seen from the base station, based upon the phase difference and for feeding back a signal representing the calculated direction from the mobile station to the base station. The transmitter of the base station transmits data toward the receiver in the calculated direction using a directional antenna.
摘要翻译：公开了一种在向接收机的方向提供无线电波的基站发射机的无线电波发射的方向上发射无线电波的方法。设置在不同位置的基站的两个天线发送已经通过相互正交的扩展码扩展的第一和第二信号。移动站具有相位检测器，用于接收从相应天线发送的第一和第二信号，并获得这些信号之间的相位差，以及用于计算移动站的方向的方向估计器，从基站看，基于相位差，并将表示计算出的方向的信号从移动台反馈到基站。基站的发射机使用定向天线在计算出的方向上向接收机发送数据。

54. 发明授权

US07026991B2 Radio transceiver and method of controlling direction of radio-wave emission 失效
公开(公告)号：US07026991B2
公开(公告)日：2006-04-11
申请号：US10859775
申请日：2004-06-03
申请人： Hajime Hamada , Michiharu Nakamura , Yasuyuki Oishi
发明人： Hajime Hamada , Michiharu Nakamura , Yasuyuki Oishi
IPC分类号： G01S5/04
CPC分类号： H04B7/0617 , G01S1/38 , G01S3/14 , G01S3/46 , G01S5/0226 , H04B7/0626
摘要： Disclosed is a method of controlling direction of radio-wave emission of a base-station transmitter which emits radio waves upon providing the radio waves with directivity in the direction of a receiver. Two antennas of a base station that are disposed at different positions transmit first and second signals that have been spread by mutually orthogonal spreading codes. A mobile station has a phase detector for receiving the first and second signals transmitted from respective ones of the antennas and obtaining a phase difference between these signals, and a direction estimator for calculating the direction of the mobile station, as seen from the base station, based upon the phase difference and for feeding back a signal representing the calculated direction from the mobile station to the base station. The transmitter of the base station transmits data toward the receiver in the calculated direction using a directional antenna.

55. 发明授权

US06864839B2 Radio transceiver and method of controlling direction of radio-wave emission 有权
标题翻译：无线电收发机和无线电波发射方向的控制方法
公开(公告)号：US06864839B2
公开(公告)日：2005-03-08
申请号：US10413421
申请日：2003-04-14
申请人： Hajime Hamada , Michiharu Nakamura , Yasuyuki Oishi
发明人： Hajime Hamada , Michiharu Nakamura , Yasuyuki Oishi
IPC分类号： G01S19/25 , G01S1/38 , G01S3/14 , G01S3/46 , G01S5/02 , H01Q3/26 , H04B7/06 , H04B7/08 , H04B7/10 , H04W16/28 , H04W64/00 , H04W88/02 , H04W88/08 , H04W92/10 , G01S5/04
CPC分类号： H04B7/0617 , G01S1/38 , G01S3/14 , G01S3/46 , G01S5/0226 , H04B7/0626
摘要： Disclosed is a method of controlling direction of radio-wave emission of a base-station transmitter which emits radio waves upon providing the radio waves with directivity in the direction of a receiver. Two antennas of a base station that are disposed at different positions transmit first and second signals that have been spread by mutually orthogonal spreading codes. A mobile station has a phase detector for receiving the first and second signals transmitted from respective ones of the antennas and obtaining a phase difference between these signals, and a direction estimator for calculating the direction of the mobile station, as seen from the base station, based upon the phase difference and for feeding back a signal representing the calculated direction from the mobile station to the base station. The transmitter of the base station transmits data toward the receiver in the calculated direction using a directional antenna.
摘要翻译：公开了一种在向接收机的方向提供无线电波的基站发射机的无线电波发射的方向上发射无线电波的方法。设置在不同位置的基站的两个天线发送已经通过相互正交的扩展码扩展的第一和第二信号。移动站具有相位检测器，用于接收从相应天线发送的第一和第二信号，并获得这些信号之间的相位差，以及用于计算移动站的方向的方向估计器，从基站看，基于相位差，并将表示所计算的方向的信号从移动台反馈到基站。基站的发射机使用定向天线在计算出的方向上向接收机发送数据。

56. 发明授权

US07973522B2 DC/DC converter, and power amplifier applying the same 失效
标题翻译： DC / DC转换器和应用它的功率放大器
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。

57. 发明申请

US20080144338A1 DC/DC converter, and power amplifier applying the same 失效
标题翻译： DC / DC转换器和应用它的功率放大器
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。

58. 发明申请

US20080094139A1 Power amplifier with distortion compensation circuit 有权
标题翻译：具有失真补偿电路的功率放大器
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。

59. 发明授权

US07663436B2 Power amplifier with distortion compensation circuit 有权
标题翻译：具有失真补偿电路的功率放大器
公开(公告)号：US07663436B2
公开(公告)日：2010-02-16
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。

60. 发明授权

US07499727B2 Communications apparatus using adaptive antenna 失效
标题翻译：采用自适应天线的通信装置
公开(公告)号：US07499727B2
公开(公告)日：2009-03-03
申请号：US10754815
申请日：2004-01-09
申请人： Yuta Nakaya , Takeshi Toda , Yasuyuki Oishi , Shinsuke Hara
发明人： Yuta Nakaya , Takeshi Toda , Yasuyuki Oishi , Shinsuke Hara
IPC分类号： H04M1/00
CPC分类号： H04B7/0842 , H04B17/20
摘要： A communications apparatus using an adaptive antenna having in a high frequency unit an antenna unit including a plurality of antenna elements and a plurality of adjustment units, provided corresponding to the plurality of antenna elements, for adjusting directivity of an entire antenna, the communications apparatus including an interference wave element extraction unit for extracting an interference wave element other than a requested signal from a received signal by the antenna unit when an adjustment value of the adjustment unit is perturbed in a one symbol time, and an adaptive control unit for performing adaptive control on the adjustment value such that the extracted interference wave element can be minimized.
摘要翻译：一种使用具有高频单位的自适应天线的通信装置，包括对应于所述多个天线元件设置的多个天线元件和多个调整单元的天线单元，用于调整整个天线的方向性，所述通信设备包括干扰波元素提取单元，用于当在一个符号时间内扰动所述调整单元的调整值时，由所述天线单元从接收信号中提取除了请求信号之外的干扰波元件;以及自适应控制单元，用于执行自适应控制调整值使得提取的干涉波元件可以最小化。

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