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61. 发明授权

US07336128B2 Feed forward amplifier for multiple frequency bands 失效
标题翻译：前馈放大器用于多个频段
公开(公告)号：US07336128B2
公开(公告)日：2008-02-26
申请号：US11445183
申请日：2006-06-02
申请人： Yasunori Suzuki , Shoichi Narahashi
发明人： Yasunori Suzuki , Shoichi Narahashi
IPC分类号： H03F1/00
CPC分类号： H03F1/3229
摘要： The present invention has for its object to provide, in an environment where plural radio systems coexist, a feed forward amplifier for multiple frequency bands, capable of adaptively selecting the frequency band which is used.The feed forward amplifier of the present invention comprises a distortion detection circuit and a distortion elimination circuit and has first and second variable frequency band extractors 25a and 25b provided in series with respective vector adjustment paths 21a and 21b. Also, the feed forward amplifier comprises a frequency band controller which varies the frequency band of variable frequency band extractors 25a and 25b and has been designed, by changing the frequency band of first and second variable frequency band extractors 25a and 25b in response to a frequency switching request from the outside, to be able to adaptively control the frequency band in which distortion is compensated.
摘要翻译：本发明的目的是在多个无线电系统共存的环境中提供能够自适应地选择所使用的频带的多个频带的前馈放大器。本发明的前馈放大器包括失真检测电路和失真消除电路，并且具有与各个矢量调节路径21a和21b串联设置的第一和第二可变频带提取器25a和25b。此外，前馈放大器包括频带控制器，其改变可变频带提取器25a和25b的频带，并且已经通过改变第一和第二可变频带提取器25a和25b的频带来设计响应来自外部的频率切换请求，能够自适应地控制失真被补偿的频带。

62. 发明授权

US07308234B2 Feedforward spur cancellation approach using low IP amplifier 有权
标题翻译：使用低IP放大器的前馈支线消除方法
公开(公告)号：US07308234B2
公开(公告)日：2007-12-11
申请号：US11038333
申请日：2005-01-19
申请人： Mark Kintis
发明人： Mark Kintis
IPC分类号： H04B1/04 , H03F1/26 , H03F1/00
CPC分类号： H03F1/3223
摘要： A power amplifier circuit (40) that includes an error correction loop (44) having a lower IP3 error correction amplifier (54) than a main power amplifier (46) in a main signal path (48). A first attenuator (52) in the error loop (44) attenuates the RF signal, and provides more attenuation of intermodulation products in the RF signal and about the same attenuation for a main frequency of the RF signal for each dB of attenuation. The error amplifier (54) amplifies the attenuated RF signal from the first attenuator (52). A second attenuator (56) in the error loop (44) attenuates the RF signal from the error correction amplifier (54). A phase shifter (58) phase shifts the RF signal from the second attenuator (56). A coupler (50) couples the amplified RF signal and the phase shifted RF signal to cancel out intermodulation products in the amplified RF signal.
摘要翻译：一种功率放大器电路（40），其包括具有比主信号路径（48）中的主功率放大器（46）更低的IP3误差校正放大器（54）的纠错环路（44）。误差环路（44）中的第一衰减器（52）衰减RF信号，并且在RF信号中提供更多的互调产物的衰减，并且对于每dB衰减量，对于RF信号的主频率大约相同的衰减。误差放大器（54）放大来自第一衰减器（52）的衰减的RF信号。错误环路（44）中的第二衰减器（56）衰减来自纠错放大器（54）的RF信号。移相器（58）使来自第二衰减器（56）的RF信号相移。耦合器（50）耦合放大的RF信号和相移的RF信号，以消除放大的RF信号中的互调产物。

63. 发明授权

US07190223B2 Amplifier 有权
标题翻译：放大器
公开(公告)号：US07190223B2
公开(公告)日：2007-03-13
申请号：US11089135
申请日：2005-03-24
申请人： Hidekatsu Ueno , Yoshihiro Narita
发明人： Hidekatsu Ueno , Yoshihiro Narita
IPC分类号： H03F1/00
CPC分类号： H03F1/3223
摘要： There is provided an amplifier that achieves stable distortion compensation without using a pilot signal even when there is a difference in level in the base signal of a multicarrier signal. The amplifier is a feedforward amplifier for amplifying a multifrequency wideband signal without using a pilot signal, and includes an input monitoring section in a signal input stage and an output monitoring section in a signal output stage, whereby for fluctuations in level of the signal from the monitoring sections, when the signal level is decreased to cause a significant decrease in the level of adjacent channel leakage power (ACP) and when the signal level does not decrease to cause a slight increase in ACP level, the controller shifts a set ACP reception frequency to an opposite frequency of the multicarrier signal, thereby achieving stable distortion compensation even when there is a difference in level in the base signal of a multicarrier signal.
摘要翻译：提供了即使在多载波信号的基本信号中存在差异的情况下，也可以不使用导频信号而实现稳定的失真补偿的放大器。放大器是用于在不使用导频信号的情况下放大多频宽带信号的前馈放大器，并且包括信号输入级中的输入监视部分和信号输出级中的输出监视部分，由此来自信号输入级的信号的电平波动监视部分，当信号电平降低以导致相邻信道泄漏功率（ACP）的电平显着降低时，并且当信号电平不降低以导致ACP电平轻微增加时，控制器将设置的ACP接收频率到多载波信号的相反频率，从而即使在多载波信号的基本信号中存在电平差时也实现稳定的失真补偿。

64. 发明授权

US07161427B2 Input structure for a power amplifier and associated methods 有权
标题翻译：功率放大器的输入结构及相关方法
公开(公告)号：US07161427B2
公开(公告)日：2007-01-09
申请号：US10743220
申请日：2003-12-22
申请人： Alan L. Westwick , Timothy J. Dupuis , Susanne A. Paul
发明人： Alan L. Westwick , Timothy J. Dupuis , Susanne A. Paul
IPC分类号： H03F1/00
CPC分类号： H03F3/265 , H03F1/301 , H03F3/68
摘要： A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power amplifier. The input network includes a transformer for helping to maintain a constant input impedance. The predriver includes a limiting amplifier that provides isolation between the power amplifier and the RF input. A DC feedback circuit is used by the predriver that maintains the DC level of the inverters to a desired level.
摘要翻译：方法和装置提供功率放大器的输入结构。在一个示例中，输入结构具有输入网络和预驱动电路，以向功率放大器提供输入信号。输入网络包括用于帮助保持恒定输入阻抗的变压器。预驱动器包括限幅放大器，可在功率放大器和RF输入之间提供隔离。预驱动器使用DC反馈电路，将逆变器的直流电平维持在所需的电平。

65. 发明申请

US20060273855A1 Noise sensitive volume control device, audio device and noise sensitive volume control method 审中-公开
标题翻译：噪声敏感音量控制装置，音频装置和噪声敏感音量控制方式
公开(公告)号：US20060273855A1
公开(公告)日：2006-12-07
申请号：US11447097
申请日：2006-06-06
申请人： Hideki Matsui , Shinichi Nakaishi , Yuji Tomita
发明人： Hideki Matsui , Shinichi Nakaishi , Yuji Tomita
IPC分类号： H03F1/00 , H03F3/00
CPC分类号： H03F3/68 , H03F1/26 , H03F3/181 , H03F2200/03 , H03F2200/321
摘要： Noise information is acquired by a noise detecting microphone 2, speed information is acquired by a speed sensor 1 etc, and these items of information are inputted to a microcomputer 7. The microcomputer 7 reads a program 13 stored in a memory 8, and calculates a final correction quantity according to an instruction of the program 13. The microcomputer 7 judges whether to apply a correction quantity based on the noise information or the correction quantity based on the speed information or to increment and decrement these two types of correction quantities. Accordingly, an optimal played-back volume corresponding to a traveling condition can be outputted.
摘要翻译：通过噪声检测麦克风2获取噪声信息，由速度传感器1等获取速度信息，并将这些信息输入到微型计算机7.微计算机7读取存储在存储器8中的程序13，最终校正量。微型计算机7基于速度信息判断是否基于噪声信息或校正量应用校正量，或者增加和减少这两种校正量。因此，可以输出与行驶状态对应的最佳回放量。

66. 发明授权

US07142054B2 Amplifying signals using a quadrature coupled amplifier 有权
标题翻译：使用正交耦合放大器放大信号
公开(公告)号：US07142054B2
公开(公告)日：2006-11-28
申请号：US10840457
申请日：2004-05-06
申请人： Leven H. Goree
发明人： Leven H. Goree
IPC分类号： H03F1/00
CPC分类号： H03F1/3229 , H03F2200/192 , H03F2200/204
摘要： Amplifying signals includes receiving an input signal. The input signal is amplified at a quadrature coupled amplifier to generate an amplified signal. The input signal is compared with the amplified signal to generate an error signal. The error signal is amplified at the quadrature coupled amplifier to generate an amplified error signal. The amplified error signal is compared with the amplified signal to generate an output signal.
摘要翻译：放大信号包括接收输入信号。输入信号在正交耦合放大器放大以产生放大信号。输入信号与放大信号进行比较，产生误差信号。误差信号在正交耦合放大器放大以产生放大的误差信号。将放大的误差信号与放大的信号进行比较以产生输出信号。

67. 发明授权

US07091782B2 Radio apparatus comprising an amplifier for radio-frequency signals, amplifier for radio-frequency signals and method for amplifying such signals 有权
标题翻译：无线电设备包括用于射频信号的放大器，用于射频信号的放大器以及用于放大这种信号的方法
公开(公告)号：US07091782B2
公开(公告)日：2006-08-15
申请号：US10512623
申请日：2003-04-22
申请人： Hervé Jacob
发明人： Hervé Jacob
IPC分类号： H03F1/00
CPC分类号： H03F1/32 , H03F1/3229
摘要： This apparatus comprises a high-frequency signal amplifier formed by a main power stage (30) which has an input for an incoming signal, an output for the amplified signal and a gain control (37). This amplifier also comprises a first comparator (49) for producing a signal that has a distortion level between the incoming signal and the amplified signal, and a differential element (45) for removing the distortion signal from the amplified signal. Moreover, for the distortion signal to be of the same level as the distortions caused by the main power stage, a secondary amplifier stage (53) is added which is inserted in a canceling loop so that the power of its output signal is constant. This loop is constituted by a measuring circuit for measuring the output power of said auxiliary amplifier stage by a comparing circuit for comparing this power to a reference value (61) and by a processing circuit (58) for influencing said gain control (37). Application: Amplifier for mobile radio telephones.
摘要翻译：该装置包括由主功率级（30）形成的高频信号放大器，其具有用于输入信号的输入，放大信号的输出和增益控制（37）。该放大器还包括用于产生具有输入信号和放大信号之间的失真电平的信号的第一比较器（49）和用于从放大信号去除失真信号的差分元件（45）。此外，为了使失真信号与由主功率级引起的失真水平相同，加上辅助放大器级53，其被插入到消除回路中，使其输出信号的功率恒定。该回路由用于通过用于将该功率与参考值（61）进行比较的比较电路和用于影响所述增益控制（37）的处理电路（58）来测量所述辅助放大器级的输出功率的测量电路构成。应用：移动无线电话放大器。

68. 发明授权

US07075366B2 Methods and systems for stabilizing an amplifier 有权
标题翻译：用于稳定放大器的方法和系统
公开(公告)号：US07075366B2
公开(公告)日：2006-07-11
申请号：US10623414
申请日：2003-07-18
申请人： Jake O. Deem , Dan Thuringer
发明人： Jake O. Deem , Dan Thuringer
IPC分类号： H03F1/00
CPC分类号： H03F1/34
摘要： The invention generally relates to stabilizing an amplifier. In one aspect, a stabilization module that is in electrical communication with the amplifier is provided. The stabilization module includes both an open loop control system and a closed loop control system. The open loop control system is used to modify at least one characteristic of an input signal received by the stabilization module and to pass control to the closed loop control system. The closed loop control system is then used to modify the at least one characteristic of the input signal. The modified input signal is provided to the amplifier.
摘要翻译：本发明一般涉及稳定放大器。在一个方面，提供了一种与放大器电连通的稳定模块。稳定模块包括开环控制系统和闭环控制系统。开环控制系统用于修改由稳定模块接收的输入信号的至少一个特性，并将控制传递给闭环控制系统。闭环控制系统然后用于修改输入信号的至少一个特性。修改的输入信号被提供给放大器。

69. 发明授权

US07038541B2 Adaptive feed-forward amplifiers and the like 失效
标题翻译：自适应前馈放大器等
公开(公告)号：US07038541B2
公开(公告)日：2006-05-02
申请号：US10856631
申请日：2004-05-28
申请人： Simon Hamparian
发明人： Simon Hamparian
IPC分类号： H03F1/00
CPC分类号： H03F1/3223 , H03F1/3229
摘要： According to one embodiment, for an amplifier circuit employing feed-forward distortion compensation, phase and amplitude adjusters in the carrier cancellation and error cancellation loops can be continuously and simultaneously controlled to compensate for changes in the operating characteristics of the amplifier circuit. For the carrier cancellation loop, the two signals that are used to generate the error signal are sampled and used to generate control signals for the phase and amplitude adjusters that adjust the signal applied to the main amplifier. For the error cancellation loop, the two signals that are used to generate the output signal are sampled and used to generate control signals for the phase and amplitude adjusters that adjust the signal applied to the error amplifier. In each case, the control signals can be generated in the analog domain using relatively simple measurement circuitry.
摘要翻译：根据一个实施例，对于采用前馈失真补偿的放大器电路，载波消除和误差消除环路中的相位和幅度调节器可以被连续和同时控制以补偿放大器电路的工作特性的变化。对于载波消除环路，用于产生误差信号的两个信号被采样并用于产生调节施加到主放大器的信号的相位和幅度调节器的控制信号。对于误差消除环路，用于产生输出信号的两个信号被采样并用于产生调节施加到误差放大器的信号的相位和幅度调节器的控制信号。在每种情况下，可以使用相对简单的测量电路在模拟域中产生控制信号。

70. 发明申请

US20060087374A1 Feed forward amplifier employing bias circuit topologies for minimization of RF amplifier memory effects 有权
标题翻译：前馈放大器采用偏置电路拓扑，以最大限度地减少RF放大器的记忆效应
公开(公告)号：US20060087374A1
公开(公告)日：2006-04-27
申请号：US11295926
申请日：2005-12-06
申请人： Ahmad Khanifar , Nikolai Maslennikov , Gareth Spiller
发明人： Ahmad Khanifar , Nikolai Maslennikov , Gareth Spiller
IPC分类号： H03F1/00
CPC分类号： H03F1/3241 , H03F1/0261 , H03F1/30 , H03F1/3235 , H03F3/60 , H03F2200/12 , H03F2200/15 , H03F2200/451 , H03F2201/3209 , H03F2201/3224
摘要： An RF power amplifier having reduced memory effects is disclosed. This is achieved by a novel design of the DC supply feed network to achieve low impedance across video frequencies, whilst maintaining the correct RF output matching. One or more transmission zeros are provided in the bias circuit transfer function, which are positioned in the video bandwidth so as to provide low and relatively constant impedance across the video bandwidth. Also, a parallel DC feed line may be employed to reduce impedance across the video bandwidth. The reduction in memory effects allows improved performance of predistortion linearization techniques and an implementation in a feed forward amplifier employing predistortion linearization is also disclosed.
摘要翻译：公开了具有减小的记忆效应的RF功率放大器。这是通过直流供电馈电网络的新颖设计实现的，以实现跨视频的低阻抗，同时保持正确的RF输出匹配。在偏置电路传递函数中提供一个或多个传输零点，偏置电路传递函数位于视频带宽中，以便在视频带宽上提供低且相对恒定的阻抗。此外，可以采用并联DC馈线来减少跨越视频带宽的阻抗。存储器效应的降低允许改善预失真线性化技术的性能，并且还公开了采用预失真线性化的前馈放大器中的实现。

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