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1. 发明授权

US09531332B2 Distortion-compensation device 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：US09531332B2
公开(公告)日：2016-12-27
申请号：US14655217
申请日：2013-11-29
申请人： Panasonic Corporation
发明人： Yoshito Hirai , Kouji Okamoto
IPC分类号： H03F1/26 , H03F1/32 , H03F3/19 , H03F3/24 , H04B1/04 , H03F3/189
CPC分类号： H03F1/3247 , H03F1/3241 , H03F3/189 , H03F3/19 , H03F3/24 , H03F2200/451 , H03F2201/3224 , H04B1/0475 , H04B2001/0425
摘要： Disclosed is a distortion-compensation apparatus that can reduce the storage space for storing coefficients required for distortion-compensation calculation, and can accurately execute distortion compensation. Distortion-compensation apparatus (100) compensates for distortion of an output signal from a predetermined circuit by predistortion in which an input signal is preliminarily multiplied by a coefficient. First multiplication section (200c) of distortion-compensation apparatus (100) multiplies an input signal by a first coefficient selected from coefficient candidates in accordance with the input signal; second multiplication section (201c1 to 201cm) multiplies a delay signal of an input signal by a tap coefficient; and adding section (202) outputs a signal obtained by adding together an input signal multiplied by the compensation coefficient and the delay signal multiplied by the tap coefficient to the predetermined circuit.
摘要翻译：公开了一种失真补偿装置，其可以减少用于存储失真补偿计算所需的系数的存储空间，并且可以精确地执行失真补偿。失真补偿装置（100）通过预输入信号预先乘以系数的预失真来补偿来自预定电路的输出信号的失真。失真补偿装置（100）的第一乘法部（200c）根据输入信号将输入信号乘以从系数候选中选择的第一系数; 第二乘法部分（201c1至201cm）将输入信号的延迟信号乘以抽头系数; 和加法部分（202）输出通过将乘以补偿系数的输入信号和乘以抽头系数的延迟信号相加到预定电路而获得的信号。

2. 发明授权

US09438281B2 Distortion-compensation device 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：US09438281B2
公开(公告)日：2016-09-06
申请号：US14655156
申请日：2013-11-29
申请人： Panasonic Corporation
发明人： Yoshito Hirai , Kouji Okamoto
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49 , H04B1/04 , H03F1/32 , H03F3/24
CPC分类号： H04B1/0475 , H03F1/3241 , H03F1/3247 , H03F1/3288 , H03F3/24 , H03F2201/3233 , H04B1/04 , H04B2001/0425
摘要： Disclosed is a distortion compensation apparatus that, by appropriately generating a distortion-compensation coefficient, makes it possible to obtain a desired transmission output, and substantially reduce the amount of power leakage to an adjacent channel. Reception section (103) of the distortion compensation apparatus acquires and demodulates a transmission signal to generate a demodulation signal. Delay adjustment section (104) computes the delay amount of the demodulation signal with respect to the baseband signal, eliminates the delay of the demodulation signal with respect to the baseband signal based on the delay amount, and outputs the baseband signal and the demodulation signal in which the delay is eliminated. Distortion compensation section (101) determines a distortion compensation coefficient in an adaptive digital predistortion process based on the baseband signal and the demodulation signal output by delay adjustment section (104), and multiplies the input signal by the distortion compensation coefficient.
摘要翻译：公开了一种失真补偿装置，其通过适当地产生失真补偿系数，使得可以获得期望的发送输出，并且基本上减少对相邻信道的电力泄漏量。失真补偿装置的接收部（103）获取并解调发送信号，生成解调信号。延迟调整部（104）根据基带信号计算解调信号的延迟量，基于延迟量消除相对于基带信号的解调信号的延迟，并将基带信号和解调信号输出延迟被消除。失真补偿部（101）根据由延迟调整部（104）输出的基带信号和解调信号，确定自适应数字预失真处理中的失真补偿系数，并将输入信号乘以失真补偿系数。

3. 发明授权

US09331635B2 Quadrature modulator 有权
标题翻译：正交调制器
公开(公告)号：US09331635B2
公开(公告)日：2016-05-03
申请号：US14661762
申请日：2015-03-18
申请人： Panasonic Corporation
发明人： Masahiro Kumagawa , Yoshito Hirai
IPC分类号： H03C3/40 , H03C1/36 , H04L27/36 , H03F1/02 , H03F1/56 , H03F3/195 , H03F3/217 , H03F3/24 , H03F3/00 , H03F3/19 , H04L25/03 , H04L27/26 , H03C1/12
CPC分类号： H03F1/0205 , H03C1/12 , H03C1/36 , H03C3/40 , H03C2200/0058 , H03F1/56 , H03F3/005 , H03F3/19 , H03F3/195 , H03F3/2171 , H03F3/2178 , H03F3/245 , H03F2200/09 , H03F2200/336 , H03F2200/387 , H03F2200/537 , H03F2200/541 , H03F2203/21142 , H04L25/03343 , H04L27/2614 , H04L27/36 , H04L2025/03414
摘要： A quadrature modulator includes a first switched capacitor power amplifier that amplifies a first high-frequency signal, a second switched capacitor power amplifier that amplifies a second high-frequency signal, a first combiner which includes at least one pair of winding wires, one winding wire in one pair being disposed on a primary side to which the amplified first high-frequency signal and the amplified second high-frequency signal are separately input and the other winding wire in the one pair being disposed on a secondary side, the first combiner combining the input amplified first high-frequency signal and the input amplified second high-frequency signal to generate a quadrature modulation signal from the secondary side, a first inductor disposed between the first switched capacitor power amplifier and the primary side of the first combiner, and a second inductor disposed between the second switched capacitor power amplifier and the primary side of the first combiner.
摘要翻译：正交调制器包括放大第一高频信号的第一开关电容器功率放大器，放大第二高频信号的第二开关电容器功率放大器，包括至少一对绕组线的第一组合器，一个绕组线一对配置在被放大的第一高频信号和放大后的第二高频信号分别输入的一次侧，一对中的另一绕组配置在次级侧，第一组合器输入放大的第一高频信号和输入放大的第二高频信号，以从次级侧产生正交调制信号，设置在第一开关电容器功率放大器与第一组合器的初级侧之间的第一电感器，以及第二设置在第二开关电容器功率放大器和第一组合器的初级侧之间的电感器。

4. 发明授权

US09401778B2 Transmission device and distortion compensation method 有权
标题翻译：传输装置和失真补偿方法
公开(公告)号：US09401778B2
公开(公告)日：2016-07-26
申请号：US14534921
申请日：2014-11-06
申请人： Panasonic Corporation
发明人： Yoshito Hirai , Kouji Okamoto
IPC分类号： H04B1/00 , H04L1/00 , H03F3/217 , H03F3/00 , H04L27/36 , H03F1/32
CPC分类号： H04L1/0042 , H03F1/3247 , H03F3/005 , H03F3/217 , H04L1/0043 , H04L27/364
摘要： A storage unit stores a first lookup table including a plurality of correction coefficients for I codes, and stores a second lookup table including a plurality of correction coefficients for Q codes. Each of the correction coefficients for I codes and each of the correction coefficients for Q codes are complex numbers. A distortion compensation unit compensates, with one of the plurality of correction coefficients for I codes, distortion of an I code of a transmission signal to generate a first input signal, outputs the first input signal to an SCPA for I codes. The distortion compensation unit compensates, with one of the plurality of correction coefficients for Q codes, distortion of a Q code of the transmission signal to generate a second input signal, and outputs the second input signal to an SCPA for Q codes.
摘要翻译：存储单元存储包括用于I代码的多个校正系数的第一查找表，并且存储包括用于Q代码的多个校正系数的第二查找表。 I代码的校正系数和Q代码的校正系数的每一个都是复数。失真补偿单元利用I个代码的多个校正系数中的一个补偿发送信号的I码的失真以产生第一输入信号，将第一输入信号输出给SCPA用于I代码。失真补偿单元用Q代码的多个校正系数中的一个补偿发送信号的Q码的失真，以产生第二输入信号，并将第二输入信号输出给SCP代码。

5. 发明授权

US09215122B2 Radio communication apparatus and interference signal detection method 有权
标题翻译：无线电通信装置和干扰信号检测方法
公开(公告)号：US09215122B2
公开(公告)日：2015-12-15
申请号：US14626934
申请日：2015-02-20
申请人： Panasonic Corporation
发明人： Makoto Ohba , Kouji Takahashi , Yoshito Hirai
IPC分类号： H04B1/10 , H04L25/08 , H04L27/26
CPC分类号： H04L27/265 , H03G3/3068 , H04B1/10 , H04B1/1027 , H04B1/109 , H04L25/08
摘要： Until when a desired signal is received in a reception mode, a level comparator extracts a portion of a frequency-domain signal output from a Fourier transformer, the portion matching with the frequency of the desired signal, and, when the reception level of the extracted portion matching with the frequency of the desired signal is higher than a predetermined threshold value, determines that an interference signal exists. An LO frequency controller sets the frequency of a local signal (LO) based on the determination result in the level comparator such that the frequency of intermodulation distortion caused by the interference signal becomes an intermediate frequency of the frequency band of the desired signal. When it is determined that the interference signal exists, an RX controller changes gain settings of a low-noise amplifier circuit and gain settings of a variable gain amplifier circuit and changes the cutoff frequency of a filter circuit.
摘要翻译：直到当在接收模式下接收到期望的信号时，电平比较器提取从傅立叶变换器输出的频域信号的一部分，与所需信号的频率匹配的部分，以及当提取的信号的接收电平与期望信号的频率匹配的部分高于预定阈值，确定存在干扰信号。 LO频率控制器基于电平比较器中的确定结果来设置本地信号（LO）的频率，使得由干扰信号引起的互调失真的频率变为期望信号的频带的中间频率。当确定干扰信号存在时，RX控制器改变低噪声放大器电路的增益设置和可变增益放大器电路的增益设置并改变滤波器电路的截止频率。

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