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1. 发明申请

WO2007109738A2 CLASS L AMPLIFIER 审中-公开
标题翻译： CLASS L放大器
公开(公告)号：WO2007109738A2
公开(公告)日：2007-09-27
申请号：PCT/US2007/064545
申请日：2007-03-21
申请人： LEADIS TECHNOLOGY, INC. , DELANO, Cary, L.
发明人： DELANO, Cary, L.
IPC分类号： H03F3/04
CPC分类号： H03F1/0244 , H03F3/3081 , H03F2200/516
摘要： A new Class L amplifier which dynamically switches between multiple pairs of power rails, and has the ability to select the most advantageous combination of rails for the minimization of power dissipation in the amplifier. A bridged amplifier system using two Class L amplifiers to drive a load.
摘要翻译：一种新的L类放大器，可在多对电源轨之间动态切换，并且能够选择最有利的轨道组合，以最大限度地减少放大器的功耗。一个桥接放大器系统，使用两个L类放大器来驱动负载。

2. 发明申请

WO02001712A1 SELF-CONFIGURABLE AMPLIFIER CIRCUIT 审中-公开
标题翻译：自配置放大器电路
公开(公告)号：WO02001712A1
公开(公告)日：2002-01-03
申请号：PCT/EP2001/007406
申请日：2001-06-28
IPC分类号： H03F3/68 , H03F3/26 , H03F3/30 , H03F3/72
CPC分类号： H03F3/72 , H03F3/3081
摘要： The invention relates to an amplifier circuit (50) comprising: a pre-amplifying stage (41); an amplifying stage (42); and identification means (45) for identifying the configuration of the amplifying stage (42). In accordance with the invention, adaptation means (46) enable to configure the pre-amplifying stage (41) in such a manner that it supplies the amplifying stage (42) with: either two signals which are in phase opposition if the amplifying stage is configured so as to be in the symmetrical mode; or two signals which are in phase if the amplifying stage is configured so as to be in the asymmetrical mode. The invention enables an amplifier to be configured in the symmetrical or asymmetrical mode, in a flexible manner, the performance of said amplifier being optimal irrespective of the configuration chosen. Application: Amplification of tuner output signals.
摘要翻译：本发明涉及一种放大器电路（50），包括：预放大级（41）; 放大级（42）; 以及用于识别放大级（42）的配置的识别装置（45）。根据本发明，自适应装置（46）使得能够以这样的方式配置预放大级（41），使得放大级（42）提供以下两种信号：放大级为被配置为处于对称模式; 或者如果放大级被配置成处于不对称模式的同相中的两个信号。本发明能够以灵活的方式将放大器配置为对称或不对称模式，而不考虑所选择的配置，所述放大器的性能是最佳的。应用：调谐器输出信号的放大。

3. 发明申请

WO2010048256A1 HEADPHONE AMPLIFIER CIRCUIT 审中-公开
标题翻译：耳机放大器电路
公开(公告)号：WO2010048256A1
公开(公告)日：2010-04-29
申请号：PCT/US2009/061433
申请日：2009-10-21
申请人： Analog Devices, Inc. , YE, Jinghua , SHEN, Hui , LI, Danny
发明人： YE, Jinghua , SHEN, Hui , LI, Danny
IPC分类号： H03F1/02 , H03F3/21 , H03F3/30
CPC分类号： H03F1/025 , H03F3/21 , H03F3/3081 , H03F2200/03 , H03F2200/507 , H03F2200/511 , H03F2200/516 , H03F2203/21196 , H03F2203/30072
摘要： A class G headphone amplifier circuit with improved power efficiency and low EMI. It may use an automatic signal level detector to detect the signal level of incoming signals and determine positive and negative power supplies for headphone amplifiers accordingly. A voltage generator may generate pairs of differential output voltages at a plurality of amplitude steps, and supply to headphone amplifiers the pair with the amplitude determined by the automatic signal level detector. As a result, headphone amplifiers are biased according to the input signal level, and the multiple voltage rails may improve power efficiency and avoid clipping.
摘要翻译： A类G耳机放大器电路，具有改善的功率效率和低EMI。它可以使用自动信号电平检测器来检测输入信号的信号电平，并相应地确定耳机放大器的正负电源。电压发生器可以以多个幅度步长产生成对的差分输出电压，并以由自动信号电平检测器确定的振幅向耳机放大器提供该对。结果，耳机放大器根据输入信号电平被偏置，并且多个电压轨可以提高功率效率并避免削波。

4. 发明申请

WO01063749A1 SIGNAL TREATING CIRCUIT WITH A CLASS A/B OUTPUT STAGE CONNECTABLE TO A SOURCE OF MULTIPLE SUPPLY VOLTAGES 审中-公开
标题翻译：具有连接到多个电源电压源的A / B类输出级信号处理电路
公开(公告)号：WO01063749A1
公开(公告)日：2001-08-30
申请号：PCT/EP2001/001206
申请日：2001-02-05
IPC分类号： H03F1/02 , H03F1/32 , H03F3/30
CPC分类号： H03F3/3081 , H03F1/0244 , H03F1/3217 , H03F2200/511
摘要： An A/B class output stage of a signal treating circuit, such as for example a mobile telephone, a radio car kit, other portable equipment, etc. treats a signal. The A/B class output stage drives a load with the signal as treated by the signal treating circuit. The output stage can be connected to one of more than one supply voltages as a function of a voltage value of the signal. The signal treating circuit comprises a D/A converter circuit and a non-linear operating circuit between an input of the signal treating circuit and the D/A converter. Above a certain signal value a change in supply voltage is made. Distortions in an output signal resulting from such a change are prevented by having the non-linear operating circuit generate a jump in DC level at an output of the output stage or raise a value of the signal at a non-clipping one of two output terminals with an extra amount that compensates for the clipping at a clipping one of the two output terminals.
摘要翻译：信号处理电路的A / B级输出级，例如移动电话，无线电车套件，其他便携式设备等处理信号。 A / B类输出级通过信号处理电路处理的信号驱动负载。输出级可以作为信号电压值的函数连接到多个电源电压中的一个。信号处理电路包括D / A转换器电路和信号处理电路的输入端与D / A转换器之间的非线性工作电路。高于某一信号值时，电源电压发生变化。通过使非线性操作电路在输出级的输出处产生直流电平的跳变或者在两个输出端子中的非限幅器上提升信号的值来防止由这种变化产生的输出信号中的失真具有补偿在两个输出端子之一的限幅器中的限幅的额外量。

5. 发明申请

WO00013308A1 LINEAR AND MULTI-SINH TRANSCONDUCTANCE CIRCUITS 审中-公开
标题翻译：线性和多电平交叉电路
公开(公告)号：WO00013308A1
公开(公告)日：2000-03-09
申请号：PCT/US1999/019339
申请日：1999-08-24
IPC分类号： H03F3/45 , H03F1/32 , H03F3/30 , H03F3/34 , H03F3/68
CPC分类号： H03F1/3211 , H03F3/3076 , H03F3/3081 , H03F2200/372 , H03F2203/45138
摘要： The present invention teaches a variety of transconductance circuits formed having two or more class AB transconductance amplifiers (1, 470, 480) coupled in parallel. The class AB transconductance amplifiers (1, 470, 480) have non-linear voltage to current transfer functions and are each designed with an offset chosen such that the combination of the individual non-linear transfer functions achieve a more linear transconductance circuit.
摘要翻译：本发明教导了形成有并联耦合的两个或更多个AB类跨导放大器（1,470,480）的各种跨导电路。 AB类跨导放大器（1，470,480）具有非线性电压到电流传递函数，并且每个被设计为具有选择的偏移，使得各个非线性传递函数的组合实现更线性的跨导电路。

6. 发明申请

WO2011140145A2 NOISE-CANCELING FOR DIFFERENTIAL AMPLIFIERS REQUIRING NO EXTERNAL MATCHING 审中-公开
标题翻译：噪声消除不需外部匹配的差分放大器
公开(公告)号：WO2011140145A2
公开(公告)日：2011-11-10
申请号：PCT/US2011/035067
申请日：2011-05-03
申请人： QUALCOMM INCORPORATED , BEHERA, Manas , MUTHALI, Harish S. , BARNETT, Kenneth Charles
发明人： BEHERA, Manas , MUTHALI, Harish S. , BARNETT, Kenneth Charles
IPC分类号： H03F3/189 , H03F3/30
CPC分类号： H03F3/3081 , H03F3/189
摘要： A differential Low Noise Amplifier (LNA) includes a first stage of resistive feedback amplifiers and second stage of complementary amplifiers, where the outputs of the first stage are coupled to the inputs of the second stage in a cross-coupled fashion. An inductive load, such as a transformer, combines signals output from the complementary amplifiers of the second stage. In one example, the LNA has an input impedance of less than 75 ohms, a noise factor of less than 2 dB, and a gain of more than 20 dB. Due to the low input impedance, the LNA is usable to amplify a signal received from a source having a similar low impedance without the use of an impedance matching network between the output of the source and the input of the LNA.
摘要翻译：差分低噪声放大器（LNA）包括第一级电阻反馈放大器和第二级互补放大器，其中第一级的输出以交叉耦合的方式耦合到第二级的输入。诸如变压器的感性负载组合从第二级的互补放大器输出的信号。在一个示例中，LNA的输入阻抗小于75欧姆，噪声系数小于2dB，增益大于20dB。由于低输入阻抗，LNA可用于放大从具有相似低阻抗的源接收的信号，而不需要在源的输出和LNA的输入之间使用阻抗匹配网络。

7. 发明申请

WO2003041270A1 A POWER AMPLIFIER MODULE WITH DISTORTION COMPENSATION 审中-公开
标题翻译：具有失真补偿的功率放大器模块
公开(公告)号：WO2003041270A1
公开(公告)日：2003-05-15
申请号：PCT/IB2002/004335
申请日：2002-10-18
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , VERSTEEGEN, Marius, G., J.
发明人： VERSTEEGEN, Marius, G., J.
IPC分类号： H03F3/30
CPC分类号： H03F3/3081
摘要： The invention relates to a power amplifier module comprising a first amplifier (2) having a first front-end (4) and a first backend amplifier stage (5) and a second amplifier (3) having a second front-end (6) and a second backend amplifier stage (7), the first amplifier and the second amplifier being arranged in a Bridge Tied Load (BTL) configuration with feedback over the load, characterized in that the first and the second backend amplifier stages having point symmetrical transfer functions with respect to the origin, the input current i1 of the first backend amplifier stage being substantially equal to the input current i2 of the second backend amplifier stage.
摘要翻译：本发明涉及功率放大器模块，其包括具有第一前端（4）和第一后端放大器级（5）的第一放大器（2）和具有第二前端（6）的第二放大器（3）第二后端放大器级（7），所述第一放大器和所述第二放大器布置成具有负载上的反馈的桥接负载（BTL）配置，其特征在于，所述第一和第二后端放大器级具有点对称传递函数，相对于原点，第一后端放大器级的输入电流i1基本上等于第二后端放大器级的输入电流i2。

8. 发明申请

WO00019604A1 LINEAR TRANSCONDUCTANCE CIRCUITS HAVING CLASS AB AMPLIFIERS PARALLEL COUPLED WITH CONCAVE COMPENSATION CIRCUITS 审中-公开
标题翻译：具有AB级放大器的线性交叉电路与并联补偿电路并联
公开(公告)号：WO00019604A1
公开(公告)日：2000-04-06
申请号：PCT/US1999/021741
申请日：1999-09-21
IPC分类号： H03F3/68 , H03F1/32 , H03F3/30 , H03F3/45
CPC分类号： H03F3/3081 , H03F3/3076 , H03F2200/372
摘要： The present invention teaches a variety of transconductance circuits formed having a class AB transconductor amplifier (Q1-Q8) coupled in parallel with at least one concave compensation circuit (Q9-Q12). When the transconductance circuit (400) has only one concave compensation circuit, the concave compensation circuit is designed with no offset so that the concave transconductance gain of the compensation circuit compensates for the convex transconductance gain of the class AB amplifier thereby providing a more linear transconductance circuit. When the transconductance circuit includes multiple concave compensation circuits, they each are designed with an offset so that the combination of the individual concave transfer functions achieve a more linear transconductance circuit.
摘要翻译：本发明教导了形成有与至少一个凹补偿电路（Q9-Q12）并联耦合的AB类跨导放大器（Q1-Q8）的各种跨导电路。当跨导电路（400）仅具有一个凹补偿电路时，凹补偿电路被设计为没有偏移，使得补偿电路的凹跨导增益补偿AB类放大器的凸跨导增益，从而提供更线性的跨导电路。当跨导电路包括多个凹面补偿电路时，它们各自被设计为具有偏移，使得各个凹面传递函数的组合实现更线性的跨导电路。

9. 发明申请

WO1993019522A1 COUPLING CIRCUIT 审中-公开
标题翻译：联络电路
公开(公告)号：WO1993019522A1
公开(公告)日：1993-09-30
申请号：PCT/US1993002342
申请日：1993-03-15
申请人： ZERO IMPEDANCE SYSTEMS, INC.
发明人： ZERO IMPEDANCE SYSTEMS, INC. , FREULER, George, H. , COLLIER, Edward, J. , MAZI, David, A.
IPC分类号： H03F03/26
CPC分类号： H03F3/4521 , H03F3/3076 , H03F3/3081 , H03F3/45224 , H03F3/68 , H03F2203/45024 , H03F2203/45028 , H03F2203/45036 , H03F2203/45224 , H03F2203/45236 , H03F2203/45278 , H03F2203/45366 , H03F2203/45471
摘要： A circuit for coupling a signal source (Vi) producing a signal having a given voltage waveform to a load (6) having two ends, the circuit being composed of: a load voltage control unit (A1) connectable between the signal source and one end of the load for producing across the load (6) a voltage corresponding to the signal voltage; and a load current control unit (A2) connectable to the load (6) and operable independently of the signal source (Vi) for producing a current flow through the load (6) sufficient to cause the voltage across the load (6) or the current through the load (5) to have the given waveform.
摘要翻译：一种用于将产生具有给定电压波形的信号的信号源（Vi）耦合到具有两端的负载（6）的电路，该电路由以下部分组成：负载电压控制单元（A1），可连接在信号源与一端用于在负载（6）上产生对应于信号电压的电压的负载; 以及负载电流控制单元（A2），其可连接到所述负载（6）并且可独立于所述信号源（Vi）操作，用于产生通过所述负载（6）的电流，所述电流足以使所述负载（6）或电流通过负载（5）具有给定的波形。

10. 发明申请

WO1987006781A1 POWER AMPLIFIER MODULE FOR A SHAKER 审中-公开
标题翻译：松下功率放大器模块
公开(公告)号：WO1987006781A1
公开(公告)日：1987-11-05
申请号：PCT/US1987000635
申请日：1987-03-25
申请人： MECHANICAL TECHNOLOGY INCORPORATED
发明人： MECHANICAL TECHNOLOGY INCORPORATED , PAULY, Wayne
IPC分类号： H03F03/185
CPC分类号： H03F3/217 , H03F3/3081
摘要： A solid state power amplifier module (10) to power a shaker. The module is comprised of a full-wave bridge switching circuit (40) (41) and a filter circuit (42). An input signal from an external source gates the switching circuits, wherein a DC voltage source is switched to the output of the amplifier in accordance with the gating control. The switches (43-46) are comprised of a plurality of parallel MOSFETs. The output of the switching circuits are processed by an L-C filter circuit (55-57) (62). The module is designed to allow a plurality of these modules to be connected in parallel for additional current capability. Inherent in this module design is an out-of saturation detection for current limiting detection.
摘要翻译：一种用于为振动器供电的固态功率放大器模块（10）。该模块由全波桥开关电路（40）（41）和滤波电路（42）构成。来自外部源的输入信号对开关电路进行栅极输入，其中根据门控控制将DC电压源切换到放大器的输出端。开关（43-46）由多个并联的MOSFET组成。开关电路的输出由L-C滤波电路（55-57）（62）处理。该模块被设计成允许多个这些模块并联连接以获得额外的电流能力。本模块设计中的固有特性是用于限流检测的超饱和检测。

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