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111. 发明授权

US07449946B1 High voltage, high current, and high accuracy amplifier 失效
标题翻译：高电压，高电流和高精度放大器
公开(公告)号：US07449946B1
公开(公告)日：2008-11-11
申请号：US12111056
申请日：2008-04-28
申请人： D. Robert Hoover
发明人： D. Robert Hoover
IPC分类号： H03F1/26
CPC分类号： H03F3/211 , H03F1/3211 , H03F1/3247 , H03F3/301 , H03F3/3069 , H03F3/45376 , H03F3/45381 , H03F3/45475 , H03F2200/03 , H03F2200/45 , H03F2200/541 , H03F2201/3233 , H03F2203/45138 , H03F2203/45392
摘要： A method and system to use voltage isolated and floating differential output amplifiers wired in series and parallel to achieve arbitrary output drive voltage and current for the applications load. Embodiments use multiple voltage-isolated and linearized devices to enable dynamically modifiable, Class A, Class B, and Class AB topologies of predetermined voltage and current performance. Embodiments can correct an output by linearizing one or more devices in a circuit by utilizing a linearization module (e.g., including one or more digital lookup tables, an error simulation circuit, or an equivalent) to linearize at least one parameter of at least one device in the circuit.
摘要翻译：使用电压隔离和浮动差分输出放大器串联和并联的方法和系统，以实现应用负载的任意输出驱动电压和电流。实施例使用多个电压隔离和线性化的装置来实现具有预定电压和电流性能的动态可修改的A类，B类和AB类拓扑。实施例可以通过利用线性化模块（例如，包括一个或多个数字查找表，错误模拟电路或等效物）对电路中的一个或多个设备进行线性化来校正输出，以将至少一个设备的至少一个参数线性化在电路中。

112. 发明申请

US20080258820A1 ACTIVE CIRCUIT HAVING IMPROVED LINEARITY USING MULITIPLE GATED TRANSISTOR 失效
标题翻译：使用多极化晶体管的有源电路具有改善的线性
公开(公告)号：US20080258820A1
公开(公告)日：2008-10-23
申请号：US12146308
申请日：2008-06-25
申请人： Tae Wook KIM , Bonkee KIM , Kwyro LEE
发明人： Tae Wook KIM , Bonkee KIM , Kwyro LEE
IPC分类号： H03F3/68
CPC分类号： H03F3/505 , H03F1/3205 , H03F1/3211 , H03F3/345 , H03F2200/453 , H03F2203/5042
摘要： The present invention relates to improved linearity of an active circuit, and more particularly, to an active circuit having improved linearity using a main circuit unit and an assistant circuit unit. According to the present invention, the common gate circuit includes a main circuit unit consisting of a common gate circuit having a drain terminal through which an input signal is output as an output signal, an assistant circuit unit having a common gate circuit in order to assist the linearity of the main circuit unit, a biasing unit for biasing the main circuit unit and the assistant circuit unit, respectively, and load stages connected to output stages of the main circuit unit and the assistant circuit unit, wherein the output stages of the main circuit unit and the assistant circuit unit are coupled to each other.
摘要翻译：本发明涉及有源电路的改进的线性度，更具体地，涉及使用主电路单元和辅助电路单元具有改进的线性度的有源电路。根据本发明，公共门电路包括主电路单元，该主电路单元由具有输出信号作为输出信号输出的漏极端子的公共门电路组成，具有公共门电路的辅助电路单元以辅助主电路单元的线性度，分别用于偏置主电路单元和辅助电路单元的偏置单元和连接到主电路单元和辅助电路单元的输出级的负载级，其中主电路单元和辅助电路单元的输出级电路单元和辅助电路单元彼此耦合。

113. 发明申请

US20080205897A1 LINEARIZED TRANS-IMPEDANCE AMPLIFIER 失效
标题翻译：线性传输阻抗放大器
公开(公告)号：US20080205897A1
公开(公告)日：2008-08-28
申请号：US12043299
申请日：2008-03-06
申请人： Michael A. Neenan , Chris G. Szymanski , Eric E. Crawford
发明人： Michael A. Neenan , Chris G. Szymanski , Eric E. Crawford
IPC分类号： H04B10/00
CPC分类号： H03F1/3223 , H03F1/08 , H03F1/32 , H03F1/3211 , H03F3/08 , H03F3/087 , H03F2200/387 , H03F2200/534
摘要： The disclosed systems and methods utilize an advanced linearized trans-impedance amplifier (ATIA) that allows for the recovery and amplification of low amplitude analog and digital signals. This disclosure further describes unique approaches of addressing issues inherent in the transmission and reception of small amplitude multi-carrier signals used for distribution of voice, video, and data communications over both fiber optic cables and free space transmitters
摘要翻译：所公开的系统和方法利用先进的线性化跨阻抗放大器（ATIA），其允许低振幅模拟和数字信号的恢复和放大。本公开进一步描述了在用于通过光纤电缆和自由空间发射机分配语音，视频和数据通信的小振幅多载波信号的发送和接收中固有的问题的唯一方法

114. 发明授权

US07414475B2 Linearity-improved differential amplification circuit 失效
标题翻译：线性改善的差分放大电路
公开(公告)号：US07414475B2
公开(公告)日：2008-08-19
申请号：US11466751
申请日：2006-08-23
申请人： Tae Wook Kim
发明人： Tae Wook Kim
IPC分类号： H03F3/45
CPC分类号： H03F1/3211 , H03F3/45183 , H03F2203/45292 , H03F2203/45352 , H03F2203/45366 , H03F2203/45374 , H03F2203/45544
摘要： A linearity-improved differential amplification circuit is provided, A linearity-improved differential amplification circuit comprises a main differential amplification unit differentially amplifying a first and a second input signals, a main bias unit biasing the main differential amplification unit, a first current source coupled in series between a power supply voltage terminal and the main bias unit and an auxiliary differential amplification unit differentially amplifying the first and the second input signal and coupled to the main differential amplification unit.
摘要翻译：提供线性改进的差分放大电路，线性改进差分放大电路包括差分放大第一和第二输入信号的主差分放大单元，偏置主差分放大单元的主偏置单元，耦合在第一和第二输入信号中的第一电流源串联在电源电压端子和主偏置单元之间，以及辅助差分放大单元，差分放大第一和第二输入信号并耦合到主差分放大单元。

115. 发明申请

US20080180175A1 VARIABLE GAIN AMPLIFIER AND CONTROL METHOD THEREOF 失效
标题翻译：可变增益放大器及其控制方法
公开(公告)号：US20080180175A1
公开(公告)日：2008-07-31
申请号：US12058354
申请日：2008-03-28
申请人： Tomoyuki ARAI
发明人： Tomoyuki ARAI
IPC分类号： H03F3/16 , H03G3/00
CPC分类号： H03G1/0088 , H03F1/301 , H03F1/3211 , H03F1/56 , H03F3/193 , H03F2200/105 , H03F2200/18 , H03F2200/213 , H03F2200/222 , H03F2200/228 , H03F2200/252 , H03F2200/42 , H03F2200/451 , H03F2200/75 , H03G3/001
摘要： A variable gain amplifier has a first amplifier circuit (106) having a first field-effect transistor and amplifying a signal input to a gate of the first field-effect transistor to output; a gate bias control circuit (102) controlling a gate bias of the first amplifier circuit to control a gain of the first amplifier circuit; and a variable matching circuit (103) controlling a capacitor connected to the gate of the first amplifier circuit to control the gain of the first amplifier circuit.
摘要翻译：可变增益放大器具有第一放大电路（106），其具有第一场效应晶体管，并放大输入到第一场效应晶体管的栅极的信号输出; 栅极偏置控制电路（102），其控制所述第一放大器电路的栅极偏置，以控制所述第一放大器电路的增益; 以及可变匹配电路（103），控制连接到第一放大器电路的栅极的电容器，以控制第一放大器电路的增益。

116. 发明授权

US07400212B1 Self-tuned active bandpass filters 失效
标题翻译：自调谐有源带通滤波器
公开(公告)号：US07400212B1
公开(公告)日：2008-07-15
申请号：US11146379
申请日：2005-06-07
申请人： Adam S. Vishinsky
发明人： Adam S. Vishinsky
IPC分类号： H04B3/04 , H01P1/20
CPC分类号： H03H11/1291 , H03F1/3211 , H03F3/45475 , H03F2200/336 , H03F2200/451 , H03F2203/45136 , H03F2203/45138
摘要： An automatically tuned on-chip active continuous-time real bandpass filter operates on a differential signal while simultaneously being tuned using a common-mode (CM) reference signal, which results in a superior accuracy of its center frequency and bandwidth. The filter consists of two or more pairs of gm-C or other types active resonators that can be single-ended or differential. The two identical filters are tuned with CM reference that is rejected at the output of each pair of resonators. For each pair of resonators, the present frequency-tuning finds the resonant frequency, for which the bandpass (BP) and lowpass magnitude values are equal. For each pair of resonators, the present Q-tuning scheme adjusts BP magnitude at the resonant frequency and its Q to the appropriate value. The present tuning method allows building a reasonably flat passband BP filter using two or more pairs of resonators. Additionally, since both present tuning schemes rely on the amplitude detection the CM reference signal can be made small, which prevents the build-up of the intermodulation distortion in the filter.
摘要翻译：自动调谐的片上有源连续时间实数带通滤波器对差分信号进行操作，同时使用共模（CM）参考信号进行调谐，从而导致其中心频率和带宽的更高精度。滤波器由两个或更多对g-m-C或其它类型的可以是单端或差分的有源谐振器组成。两个相同的滤波器用CM参考调谐，在每对谐振器的输出端被拒绝。对于每对谐振器，当前的频率调谐寻找到频带（BP）和低通幅度值相等的谐振频率。对于每对谐振器，本Q调谐方案将谐振频率处的BP幅值及其Q调整到适当的值。本调谐方法允许使用两对或更多对谐振器构建合理平坦的通带BP滤波器。另外，由于本次调谐方案都依赖于幅度检测，所以可以使CM参考信号变小，从而防止滤波器中的互调失真的累积。

117. 发明申请

US20080164941A1 Systems and methods for power amplifiers with voltage boosting multi-primary transformers 有权
标题翻译：具有升压型多原子变压器的功率放大器的系统和方法
公开(公告)号：US20080164941A1
公开(公告)日：2008-07-10
申请号：US11964646
申请日：2007-12-26
申请人： Chang-Ho Lee , Kyu Hwan An , Ki Seok Yang , Jaejoon Chang , Wangmyong Woo , Younsuk Kim , Haksun Kim , Ockgoo Lee , Dong Ho Lee , Hyungwook Kim , Joy Laskar
发明人： Chang-Ho Lee , Kyu Hwan An , Ki Seok Yang , Jaejoon Chang , Wangmyong Woo , Younsuk Kim , Haksun Kim , Ockgoo Lee , Dong Ho Lee , Hyungwook Kim , Joy Laskar
IPC分类号： H03F3/68 , H03F3/00
CPC分类号： H03F3/211 , H01F2017/0046 , H03F1/3211 , H03F3/195 , H03F3/45183 , H03F3/45475 , H03F3/604 , H03F2200/451 , H03F2200/537 , H03F2200/541 , H03F2203/21139 , H03F2203/21157 , H03F2203/45704 , H03F2203/45706 , H03F2203/45731 , Y10T29/49071
摘要： Systems and methods may be provided for a power amplifier system. The systems and methods may include a plurality of power amplifiers, where each power amplifier includes at least one output port. The systems and methods may also include a plurality of primary windings each having a first number of turns, where each primary winding is connected to at least one output port of the plurality of power amplifiers, and a single secondary winding inductively coupled to the plurality of primary windings, where the secondary winding includes a second number of turns greater than the first number of turns.
摘要翻译：可以为功率放大器系统提供系统和方法。系统和方法可以包括多个功率放大器，其中每个功率放大器包括至少一个输出端口。系统和方法还可以包括多个初级绕组，每个初级绕组具有第一圈数，其中每个初级绕组连接到多个功率放大器的至少一个输出端口，以及感应耦合到多个初级绕组，其中次级绕组包括大于第一匝数的第二匝数。

118. 发明申请

US20080150633A1 METHOD AND SYSTEM FOR REDUCING AM/PM DISTORTION IN A POLAR AMPLIFIER 有权
标题翻译：用于减少极性放大器中的AM / PM失真的方法和系统
公开(公告)号：US20080150633A1
公开(公告)日：2008-06-26
申请号：US11684075
申请日：2007-03-09
申请人： Alireza Zolfaghari
发明人： Alireza Zolfaghari
IPC分类号： H03F3/38
CPC分类号： H03F1/3276 , H03F1/3211 , H03F3/45183 , H03F3/45188 , H03F3/45766 , H03F2203/45482 , H03F2203/45624
摘要： Methods and systems for reducing AM/PM distortion in a polar amplifier are disclosed and may comprise adding an offset signal to an amplitude signal in the digital domain and removing the offset signal in the analog domain during polar modulation. A sum of an amplitude signal and an offset signal may be mixed with a phase signal in a first differential amplifier to generate a first voltage signal, and the offset signal may be mixed with the phase signal in a second differential amplifier to generate a second voltage signal, which may be subtracted from the first voltage signal. The amplitude and offset signals may be mixed with the phase signal by modulating a current in the differential amplifiers, which may comprise cascode differential amplifiers. The modulated current may be generated using a current source and a current mirror circuit, which may comprise a cascode current mirror.
摘要翻译：公开了用于减少极性放大器中的AM / PM失真的方法和系统，并且可以包括将偏移信号添加到数字域中的幅度信号，并且在极化调制期间去除模拟域中的偏移信号。振幅信号和偏移信号的和可以与第一差分放大器中的相位信号混合以产生第一电压信号，并且偏移信号可以与第二差分放大器中的相位信号混合以产生第二电压信号，其可以从第一电压信号中减去。幅度和偏移信号可以通过调制差分放大器中的电流而与相位信号混合，差分放大器可以包括共源共栅差分放大器。可以使用电流源和电流镜电路来产生调制电流，电流源和电流镜电路可以包括共源共栅电流镜。

119. 发明授权

US07375576B2 Log circuit and highly linear differential-amplifier circuit 有权
标题翻译：对数电路和高线性差分放大电路
公开(公告)号：US07375576B2
公开(公告)日：2008-05-20
申请号：US11231518
申请日：2005-09-21
申请人： Stefan Groiss
发明人： Stefan Groiss
IPC分类号： G06G7/24
CPC分类号： G06G7/24 , H03F1/3211 , H03F3/45085 , H03F3/45475 , H03F2203/45352 , H03F2203/45571
摘要： A log circuit receives an operated current signal and a reference current signal at respective inputs and comprises an operand log circuit including a first bipolar semiconductor device and being configured to generate a first logarithmized signal on the basis of the operand current signal, a reference log circuit including a second bipolar semiconductor device and being configured to generate a second logarithmized signal on the basis of the reference current signal, and a differential-amplifier circuit receiving the first logarithmized signal and the second logarithmized signal, and outputting a differential-amplifier output signal in dependency on the first logarithmized signal and the second logarithmized signal. The differential amplifier is configured such that its amplification depends on a thermal voltage of a bipolar semiconductor device, so that at the output signal of the differential amplifier, the temperature dependency of the difference between the first logarithmized signal and the second logarithmized signal is counteracted.
摘要翻译：对数电路在相应的输入处接收操作的电流信号和参考电流信号，并且包括操作数对数电路，其包括第一双极型半导体器件，并被配置为基于操作数电流信号产生第一对数信号，参考对数电路包括第二双极半导体器件，并且被配置为基于参考电流信号产生第二对数信号，以及差分放大器电路，接收第一对数信号和第二对数信号，并输出差分放大器输出信号对第一对数信号和第二对数信号的依赖性。差分放大器被配置为使得其放大取决于双极半导体器件的热电压，使得在差分放大器的输出信号处，抵消第一对数信号和第二对数信号之间的差的温度依赖性。

120. 发明申请

US20080106337A1 BIAS CURRENT COMPENSATION CIRCUIT FOR A DIFFERENTIAL INPUT STAGE 有权
标题翻译：用于差分输入级的偏置电流补偿电路
公开(公告)号：US20080106337A1
公开(公告)日：2008-05-08
申请号：US11557489
申请日：2006-11-07
申请人： Ching-Tzung LIN
发明人： Ching-Tzung LIN
IPC分类号： H03F3/45
CPC分类号： H03F3/45085 , H03F1/3211 , H03F2203/45026 , H03F2203/45244 , H03F2203/45292 , H03F2203/45322 , H03F2203/45396 , H03F2203/45702
摘要： A bias current compensation circuit for a differential input stage has a compensation current supplying circuit and a compensation selecting circuit. The compensation current supplying circuit generates a compensation current. The compensation selecting circuit is coupled between the compensation current supplying circuit and a first and a second input terminals of the differential input stage. When the first input terminal needs to be driven by a first bias current, the compensation selecting circuit determines to allow the compensation current to be applied to the first input terminal for serving as the first bias current. When the second input terminal needs to be driven by a second bias current, the compensation selecting circuit determines to allow the compensation current to be applied to the second input terminal for serving as the second bias current.
摘要翻译：用于差分输入级的偏置电流补偿电路具有补偿电流供给电路和补偿选择电路。补偿电流供给电路产生补偿电流。补偿选择电路耦合在补偿电流供给电路和差动输入级的第一和第二输入端子之间。当第一输入端子需要被第一偏置电流驱动时，补偿选择电路确定允许将补偿电流施加到第一输入端作为第一偏置电流。当第二输入端子需要由第二偏置电流驱动时，补偿选择电路确定允许将补偿电流施加到第二输入端子用作第二偏置电流。

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