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1. 发明授权

US06819174B2 Amplification device 有权
标题翻译：扩增装置
公开(公告)号：US06819174B2
公开(公告)日：2004-11-16
申请号：US10390605
申请日：2003-03-19
申请人： Junichiro Yamakawa , Yoshinari Nanao
发明人： Junichiro Yamakawa , Yoshinari Nanao
IPC分类号： H03F100
CPC分类号： H03F1/3229 , H03F1/3235
摘要： The object of this invention is to reduce the cost of an amplification device that has a distortion detection loop that uses an amplifier to amplify the signal subject to amplification and detect the distortion arising in said amplifier, and a distortion removal loop that removes the distortion detected by the distortion detection loop from the signal amplified by said amplifier. This object is achieved by a configuration wherein the distortion detection loop consists of a first digital modulation means that, among two branches of a digital baseband signal subject to amplification that is divided into two, uses one branch of the signal to modulate a carrier signal, an amplifier that amplifies this modulated signal, delay means that delays the other branch of the digital baseband signal, a second digital modulation means that uses the delayed signal to modulate a carrier signal, phase-change means that changes the phase of the modulated signal and distortion detection means that detects the distortion arising in the amplifier from the amplified signal and the phase-changed modulated signal.
摘要翻译：本发明的目的是降低具有失真检测环路的放大装置的成本，所述失真检测环路使用放大器来放大经放大的信号，并检测在所述放大器中产生的失真，以及去除检测到的失真的失真消除环路通过由所述放大器放大的信号的失真检测环路。该目的通过一种配置来实现，其中失真检测环路由第一数字调制装置组成，在被分成两个的被放大的数字基带信号的两个分支之中，使用信号的一个分支来调制载波信号，放大该调制信号的放大器，延迟数字基带信号的另一分支的延迟装置，使用延迟信号来调制载波信号的第二数字调制装置，改变调制信号的相位的相变装置，以及失真检测装置，根据放大信号和相位改变的调制信号检测放大器中产生的失真。

2. 发明授权

US06756844B2 Distortion compensation amplification apparatus of feed forward type and adaptive pre-distortion type 失效
标题翻译：前馈型和自适应预失真型失真补偿放大装置
公开(公告)号：US06756844B2
公开(公告)日：2004-06-29
申请号：US10127568
申请日：2002-04-23
申请人： Yoshinari Nanao , Matsuo Satoh , Masahiro Matsuda
发明人： Yoshinari Nanao , Matsuo Satoh , Masahiro Matsuda
IPC分类号： H03F126
CPC分类号： H03F1/0266 , H03F1/0272 , H03F1/3229
摘要： A feed forward type distortion compensation amplification apparatus, which includes a distortion detection loop and a distortion compensation loop, cancels a first distortion element generated from the distortion detection loop by a second distortion element generated from the distortion compensation loop to generate an output signal, and controls bias levels of the main amplifier and the error amplifier based on a level of the output signal. An adaptive pre-distortion type distortion compensation amplification apparatus includes a detection unit for detecting an input power level, a control unit for storing the input power level and a bias level corresponding thereto and generating the bias level in response to the input power level, and a bias control unit for applying a bias to an amplifier unit in response to the bias level.
摘要翻译：包括失真检测环路和失真补偿环路的前馈型失真补偿放大装置通过由失真补偿环路产生的第二失真元件来消除从失真检测环路产生的第一失真元件，生成输出信号，基于输出信号的电平控制主放大器和误差放大器的偏置电平。一种自适应预失真型失真补偿放大装置，包括用于检测输入功率电平的检测单元，用于存储输入功率电平的控制单元和与其对应的偏置电平，并响应于输入功率电平产生偏置电平，以及偏置控制单元，用于响应偏置电平向放大器单元施加偏置。

3. 发明授权

US06801083B2 Feedforward amplifier 失效
标题翻译：前馈放大器
公开(公告)号：US06801083B2
公开(公告)日：2004-10-05
申请号：US10453733
申请日：2003-06-04
申请人： Takeshi Ishigami , Yoshinari Nanao
发明人： Takeshi Ishigami , Yoshinari Nanao
IPC分类号： H03F366
CPC分类号： H03F1/3247 , H03F1/3235 , H03F1/486
摘要： The object of this invention is to provide a feedforward amplifier that performs precise distortion compensation on a plurality of signal groups without adopting broadband frequency-band characteristics for the auxiliary amplifier. This is achieved by inputting a plurality of signal groups, each having a different frequency bandwidth respectively. In a distortion detection loop, a main amplifier 4 is used to amplify this plurality of input signal groups and detect the distortion arising in said main amplifier 4. In a distortion compensation loop the distortion detected in the distortion detection loop is removed from the amplified signal from said main amplifier 4. At this time, the distortion compensation loop has the same number of distortion amplification systems as the number of input signal groups that use the auxiliary amplifiers 12 and 16 to amplify distortion in each input signal group that contains distortion detected by the distortion detection loop, and that removes the sum total of the distortion of each input signal group amplified by this plurality of distortion amplification systems from the amplified signal from the main amplifier 4.
摘要翻译：本发明的目的是提供一种在多个信号组上执行精确失真补偿而不采用用于辅助放大器的宽带频带特性的前馈放大器。这通过分别输入各自具有不同频率带宽的多个信号组来实现。在失真检测环路中，使用主放大器4来放大该多个输入信号组并检测在所述主放大器4中出现的失真。在失真补偿环路中，从放大信号中去除在失真检测环路中检测到的失真此时，失真补偿环路具有与使用辅助放大器12和16放大每个输入信号组中的失真的输入信号组的数量相同数量的失真放大系统，其包含由失真检测环路，并且从主放大器4的放大信号中去除由该多个失真放大系统放大的每个输入信号组的失真的总和。

4. 发明授权

US5787342A Receiver 失效
标题翻译：接收器
公开(公告)号：US5787342A
公开(公告)日：1998-07-28
申请号：US684139
申请日：1996-07-18
申请人： Shunji Tochihara , Yoshinari Nanao
发明人： Shunji Tochihara , Yoshinari Nanao
IPC分类号： H04B1/10 , H03J7/04 , H04B1/26 , H04B1/06
CPC分类号： H03J7/04 , H04B1/26
摘要： In a receiver of the present invention, a local oscillator frequency, used as a basis for a reception unit to demodulate a received signal, is generated by a local oscillator based on a reference frequency, which is generated by a voltage-controlled oscillator whose oscillation frequency is adjusted by a control voltage applied thereto. The control voltage is prescribed by a decoding unit which monitors a reception electric field intensity (RSSi) or an error rate in the reception unit. The control voltage is adjusted in a manner to increase the reception electric field intensity (RSSi) or reduce the error rate. When the local oscillator frequency experiences a large deviation and the signal cannot be received with good reception sensitivity, the decoding unit generates a control voltage in a manner so as to eliminate the deviation and applies the generated control voltage to the voltage-controlled oscillator for automatically adjusting the local oscillator frequency to a level having a reduced deviation.
摘要翻译：在本发明的接收机中，本地振荡器频率用作接收单元解调接收信号的基础，由本地振荡器基于参考频率产生，该基准频率是由其振荡的压控振荡器产生的通过施加到其上的控制电压来调整频率。控制电压由监视接收单元中的接收电场强度（RSSi）或错误率的解码单元规定。以增加接收电场强度（RSSi）或降低误码率的方式调节控制电压。当本地振荡器频率经历较大的偏差，并且不能以良好的接收灵敏度接收信号时，解码单元以这样的方式产生控制电压以消除偏差，并将所产生的控制电压施加到压控振荡器将本地振荡器频率调整到具有减小的偏差的电平。

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