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1. 发明申请

WO2010027773A1 SETTING THE DC OPERATING CURRENT OF A RAIL-TO-RAIL OUTPUT STAGE OF AN OP-AMP 审中-公开
标题翻译：设置OP-AMP的铁路到轨道输出级的直流工作电流
公开(公告)号：WO2010027773A1
公开(公告)日：2010-03-11
申请号：PCT/US2009/054861
申请日：2009-08-25
申请人： ANALOG DEVICES, INC. , MODICA, Eric , BOWERS, Derek
发明人： MODICA, Eric , BOWERS, Derek
IPC分类号： H03F1/30 , H03F3/45 , H03F3/30 , H03F3/343 , G05F3/26 , G05F3/30
CPC分类号： H03F1/307 , H03F1/302 , H03F1/308 , H03F3/3028 , H03F3/3066 , H03F3/3432 , H03F3/4508 , H03F3/45179 , H03F2200/453 , H03F2200/456 , H03F2200/513 , H03F2203/30061
摘要： In an output stage of an operational amplifier, first(2,Q5) and second(Ql,Q4) transistors each provide a collector current under quiescent conditions to first (12, 14) and second (Il,I3)rrent sources. A resistor (Rl, R3) receives a portion of one the collector currents and produces a resistor voltage in response. An output transistor (Q3,Q6) provides a quiescent current having a value calculated as a function of the resistor voltage and a base-emitter voltage of the second transistor (Ql, Q4).
摘要翻译：在运算放大器的输出级中，第一（2，Q5）和第二（Q1，Q4）晶体管各自在静态条件下为第一（12,14）和第二（I1，I3）电流源提供集电极电流。电阻器（R1，R3）接收一个集电极电流的一部分并产生响应的电阻器电压。输出晶体管（Q3，Q6）提供具有作为电阻器电压和第二晶体管（Q1，Q4）的基极 - 发射极电压的函数计算的值的静态电流。

2. 发明申请

WO02050999A1 POWER AMPLIFIER 审中-公开
标题翻译：功率放大器
公开(公告)号：WO02050999A1
公开(公告)日：2002-06-27
申请号：PCT/IB2001/002200
申请日：2001-11-14
IPC分类号： H03F1/30 , H03F3/30 , H03F1/32
CPC分类号： H03F1/307 , H03F3/3076
摘要： The invention relates to devices to amplify electric signals and more particularly, to power amplifiers. The object of the invention is reduction of distortions and the output resistance in power amplifiers in the wide operating frequency. The object is achieved by so in this power amplifier comprising input and output stages, enveloped with the total negative feedback, in addition the local active negative feedback is lead, that lets to stabilize hard the bias voltage of the output stage of a power amplifier, that cases to reduction of distortions and the output resistance in the wide operating frequency.
摘要翻译：本发明涉及用于放大电信号的装置，更具体地涉及功率放大器。本发明的目的是在宽工作频率下减少功率放大器的失真和输出电阻。该目的通过这样的功率放大器来实现，该功率放大器包括具有总负反馈的输入和输出级，另外局部有源负反馈是导通的，这使得稳定功率放大器的输出级的偏置电压，在宽工作频率下减少失真和输出电阻的情况。

3. 发明申请

WO1983001714A1 AMPLIFIER SUITABLE FOR LOW SUPPLY VOLTAGE OPERATION 审中-公开
标题翻译：适用于低电压运算的放大器
公开(公告)号：WO1983001714A1
公开(公告)日：1983-05-11
申请号：PCT/GB1982000321
申请日：1982-11-10
申请人： ADKIN, Francis, Whitmore
IPC分类号： H03F03/21
CPC分类号： H03F3/26 , H03F1/0261 , H03F1/307
摘要： An amplifier which is particularly suitable for low supply voltage operation and which is relatively insensitive to power supply voltage variations includes a signal amplifying stage (11) and a control stage (10). The signal amplifying stage (11) includes the output load (13), such as a loudspeaker, in series with a transistor (12) which is controlled by a current mirror circuit (14, 15, 16) in the control stage. The circuit acts by continuously comparing part of the voltage across the output load (13) with a very low reference voltage arising from the difference in the base-emitter voltages of two transistors (14, 15) operating at unequal collector current values. This causes voltage excursion peaks appearing at the junction of the output load (13) and the amplifying transistor (12) to be clamped to a voltage equal to or otherwise related to that at the opposite side of the output load (13).
摘要翻译：特别适用于低电源电压并且对电源电压变化相对不敏感的放大器包括信号放大级（11）和控制级（10）。信号放大级（11）包括与控制级中的电流镜电路（14,15,16）控制的晶体管（12）串联的诸如扬声器的输出负载（13）。该电路通过将输出负载（13）两端的电压的一部分连续地与由两个以不相等集电极电流值工作的晶体管（14,15）的基极 - 发射极电压的差产生的非常低的参考电压而起作用。这导致出现在输出负载（13）和放大晶体管（12）的结处的电压偏移峰值被钳位到与输出负载（13）的相反侧相同或相关的电压。

4. 发明申请

WO2010030455A1 IMPROVED AMPLIFICATION CIRCUIT AND HEARING AID 审中-公开
标题翻译：改进的放大电路和听力辅助
公开(公告)号：WO2010030455A1
公开(公告)日：2010-03-18
申请号：PCT/US2009/053140
申请日：2009-08-07
申请人： ETYMOTIC RESEARCH, INC. , JOHNSON, William, A. , KILLION, Mead, C.
发明人： JOHNSON, William, A. , KILLION, Mead, C.
IPC分类号： H04R25/00
CPC分类号： H04R25/656 , H03F1/307 , H03F3/26 , H03F3/3066 , H03F2200/03 , H04R25/48 , H04R25/654 , H04R2225/33 , H04R2460/17
摘要： Improved amplification circuits and hearing aids that can utilize such amplification circuits are provided. In an embodiment, for example, an amplification circuit includes: a first sub circuit configured to create a voltage drop when a supply voltage is above a first voltage; and a second sub circuit configured to create a reverse voltage drop when the supply voltage is below a second voltage, wherein the first and second sub circuits operate to maintain idling current within a range. Certain embodiments of the present technology also provide hearing aids that include removable dampers.
摘要翻译：提供了可以利用这种放大电路的改进的放大电路和助听器。在一个实施例中，例如，放大电路包括：第一子电路，被配置为当电源电压高于第一电压时产生电压降; 以及第二子电路，其被配置为当所述电源电压低于第二电压时产生反向电压降，其中所述第一和第二子电路操作以将空转电流保持在一定范围内。本技术的某些实施例还提供了包括可移除阻尼器的助听器。

5. 发明申请

WO2006018750A1 DUAL MODE AUDIO AMPLIFIER 审中-公开
标题翻译：双模音频放大器
公开(公告)号：WO2006018750A1
公开(公告)日：2006-02-23
申请号：PCT/IB2005/052493
申请日：2005-07-25
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , MELS, Frank, K., I.
发明人： MELS, Frank, K., I.
IPC分类号： H03F1/34
CPC分类号： H03F3/217 , H03F1/02 , H03F1/0272 , H03F1/307 , H03F1/32 , H03F1/34 , H03F3/3066 , H03F2200/03
摘要： A dual mode power amplifier for an audio signal operates in linear mode at lower levels of the audio signal and in switched mode (Class D) at higher levels of the audio signal.
摘要翻译：用于音频信号的双模功率放大器在音频信号的较低电平处于线性模式，而在音频信号的较高级别处于切换模式（D类）。

6. 发明申请

WO1995011546A1 AUDIO FREQUENCY POWER AMPLIFIER 审中-公开
标题翻译：音频功率放大器
公开(公告)号：WO1995011546A1
公开(公告)日：1995-04-27
申请号：PCT/RU1993000244
申请日：1993-10-21
申请人： TOVARISCHESTVO S OGRANICHENNOI OTVETSTVENNOSTJU "e;KVARK"e; , SERGEEV, Petr Alexeevich
发明人： TOVARISCHESTVO S OGRANICHENNOI OTVETSTVENNOSTJU "e;KVARK"e;
IPC分类号： H03F03/26
CPC分类号： H03F1/307 , H03F3/3076
摘要： The proposed amplifier comprises: an input cascade (1) using an operational amplifier (2), the purpose of this being to create a negative feedback connection common to the alternating and direct currents, in the form of a voltage divider. The operational amplifier (2) draws power via the parametric stabilizers using transistors (3, 4). The voltage amplification cascade (22) is designed as a symmetrical circuit using two transistors (23, 24) forming a circuit with a common base, and is provided with a circuit which creates a potential at the bases of these transistors (23, 24) and includes two groups of diodes (26, 27 and 28, 29) connected in series, the groups being connected via a resistor (30). The current amplification unit (31) is designed as a symmetrical circuit and comprises cascades using transistors (32, 33, 34, 35, 36, 37), connected to a common collector. The output cascade of the unit (31) comprises two resistors (38, 39) connected in series, each of which is connected to the unit's transistors (36, 37). In addition, the unit (31) comprises a thermal stabilizer (43) using transistors (44, 45) of differing structures, while the power amplifier contains a negative feedback circuit common to the direct and alternating currents.
摘要翻译：所提出的放大器包括：使用运算放大器（2）的输入级联（1），其目的是以分压器的形式产生对交流和直流电流共同的负反馈连接。运算放大器（2）通过使用晶体管（3,4）的参数稳定器来吸收功率。电压放大级联（22）被设计为使用形成具有公共基极的电路的两个晶体管（23,24）的对称电路，并且设置有在这些晶体管（23,24）的基极处产生电位的电路，并且包括串联连接的两组二极管（26,27和28,29），所述组通过电阻器（30）连接。电流放大单元（31）被设计为对称电路，并且包括连接到公共集电极的晶体管（32,33,34,35,36,37）的级联。单元（31）的输出级联包括串联连接的两个电阻器（38,39），每个电阻器连接到单元的晶体管（36,37）。此外，单元（31）包括使用不同结构的晶体管（44,45）的热稳定器（43），而功率放大器包含与直流和交流电流相同的负反馈电路。

7. 发明申请

WO2017196903A1 RF CLASS AB CASCODE AMPLIFIER WITH LINEARIZATION AND STEERING DIODES 审中-公开
标题翻译：具有线性化和转向二极管的RF类AB CASCODE放大器
公开(公告)号：WO2017196903A1
公开(公告)日：2017-11-16
申请号：PCT/US2017/031834
申请日：2017-05-09
申请人： ARRIS ENTERPRISES LLC
发明人： SCHEMMANN, Marcel F.
IPC分类号： H03F3/45
CPC分类号： H03F3/20 , H03F1/086 , H03F1/305 , H03F1/307 , H03F1/32 , H03F1/3217 , H03F1/3241 , H03F3/26 , H03F3/3076 , H03F3/45085 , H03F3/45973
摘要： Systems and methods for amplifying signals. In some embodiments, the signals may be amplified using a diode steering network with an amplifier operated in class AB mode. In some embodiments, distortion in the amplified signal may be corrected using a feed forward cancellation circuit operated in class A mode.
摘要翻译：用于放大信号的系统和方法
。在一些实施例中，可以使用具有以AB类模式运行的放大器的二极管控制网络来放大信号。在一些实施例中，可以使用在A类模式下操作的前馈消除电路来校正放大信号中的失真。

8. 发明申请

WO2016001207A1 CLASS AB AMPLIFIER WITH BIAS CONTROL 审中-公开
标题翻译：具有偏置控制的AB类放大器
公开(公告)号：WO2016001207A1
公开(公告)日：2016-01-07
申请号：PCT/EP2015/064809
申请日：2015-06-30
申请人： BANG & OLUFSEN A/S
发明人： SELMER JENSEN, Jørgen , NØRMØLLE RASMUSSEN, Jens
IPC分类号： H03F3/30 , H03F1/30
CPC分类号： H03F1/302 , H03F1/307 , H03F1/308 , H03F1/32 , H03F3/183 , H03F3/21 , H03F3/3016 , H03F3/3066 , H03F3/45174 , H03F2200/321 , H03F2200/462 , H03F2200/78 , H03F2203/30024 , H03F2203/30078 , H03F2203/30111
摘要： An amplifier arrangement comprising first and second power amplifiers (T1, T2) having drains connected to positive and negative drive voltages, respectively, and gates connected to an input signal. The arrangement further comprises first and second current sensors (1, 2) for detecting first and second drain currents from the power amplifiers, processing circuitry (3) adapted to identify the smallest drain current, and a feedback control loop (5) and means for driving a bias current dependent on a feedback signal through a resistor connected between the input signal and the gate of an inactive one of the first and second power amplifiers. The control loop will keep the idle current constant in the transistor with the lowest current (the inactive transistor). Thereby, the current running in the transistor which does not deliver current to the load will be fixed at a desired value.
摘要翻译：一种放大器装置，包括分别连接到正和负驱动电压的漏极的第一和第二功率放大器（T1，T2）和连接到输入信号的门。该装置还包括用于检测来自功率放大器的第一和第二漏极电流的第一和第二电流传感器（1,2），适于识别最小漏极电流的处理电路（3）和反馈控制回路（5）以及用于通过连接在输入信号和第一和第二功率放大器中的不活动的一个的栅极之间的电阻来驱动取决于反馈信号的偏置电流。控制回路将使具有最低电流（无效晶体管）的晶体管中的空闲电流保持恒定。因此，不向负载输送电流的晶体管中的电流将被固定为期望的值。

9. 发明申请

WO2014114632A1 DIFFERENTIAL OUTPUT STAGE OF AN AMPLIFICATION DEVICE, FOR DRIVING A LOAD 审中-公开
标题翻译：用于驱动负载的放大器件的差分输出级
公开(公告)号：WO2014114632A1
公开(公告)日：2014-07-31
申请号：PCT/EP2014/051111
申请日：2014-01-21
申请人： ST-ERICSSON SA
发明人： COONFALONIERI, Pierangelo , GUANZIROLI, Federico , NICOLLINI, Germano
IPC分类号： H03F3/217 , H03F3/30 , H03F1/32 , H03F1/30
CPC分类号： H03F1/0205 , H03F1/307 , H03F1/3205 , H03F3/183 , H03F3/211 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F3/2178 , H03F3/3059 , H03F3/3064 , H03F3/45179 , H03F2200/03 , H03F2200/351 , H03F2203/21142
摘要： Differential output stage (200) of an amplification device, for driving a load, comprises a first (201) and a second (202) differential output stage portion. The first differential output stage portion (201) comprises: a first (M1PSW) and a second (M1NSW) output circuit; a first driving circuit (210) comprising a first biasing circuit (M2P, M3N, M4N, R11, I11); a second driving circuit (220) comprising a second biasing circuit (I41, R41, M4P, M3P, M2N). The first differential output stage portion (201) comprises: a third output circuit (M2PSW) connected between a first node (N1) of said first biasing circuit (M2P, M3N, M4N, R11, I11 ) and a first differential output terminal (01), having a third driving terminal (DT3) connected to a first driving terminal (DT1); a fourth output circuit (M2NSW) connected between a first node (N4) of the second biasing circuit (I41, R41, M4P, M3P, M2N) and the first differential output terminal (01), having a fourth driving terminal (DT4) connected to a second driving terminal (DT2).
摘要翻译：用于驱动负载的放大装置的差分输出级（200）包括第一（201）和第二（202）差分输出级部分。第一差分输出级部分（201）包括：第一（M1PSW）和第二（M1NSW）输出电路; 第一驱动电路（210），包括第一偏置电路（M2P，M3N，M4N，R11，I11）; 包括第二偏置电路（I41，R41，M4P，M3P，M2N）的第二驱动电路（220）。第一差分输出级部分（201）包括：连接在所述第一偏置电路（M2P，M3N，M4N，R11，I11）的第一节点（N1）和第一差分输出端子（01）之间的第三输出电路（M2PSW）），具有连接到第一驱动端子（DT1）的第三驱动端子（DT3）; 连接在第二偏置电路（I41，R41，M4P，M3P，M2N）的第一节点（N4）和第一差分输出端子（01）之间的第四输出电路（M2NSW），具有连接的第四驱动端子（DT4）到第二驱动终端（DT2）。

10. 发明申请

WO00011779A1 CIRCUIT FOR PRECISE SENSING AND REGULATION OF QUIESCENT DC CURRENT IN TRANSISTOR POWER AMPLIFIERS 审中-公开
标题翻译：晶体管功率放大器精密感应直流电流精度检测电路
公开(公告)号：WO00011779A1
公开(公告)日：2000-03-02
申请号：PCT/PL1998/000033
申请日：1998-08-19
IPC分类号： H03F1/30 , H03F1/32
CPC分类号： H03F1/3217 , H03F1/307
摘要： Means and the circuit for extraction of quiescent current from final stages of transistor power amplifiers enabling the sensing and feedback-controlled regulation of that current. In the means, from the voltage UA across the first current sensing resistor RA introduced in series with high current path of first power transistor (or a first substitution set of power transistors) TA conducting the current within first of two half-periods of the sinusoidal output signal or being a harmonic of that signal, and from the voltage UB across the second sensing resistor RB introduced in series with high current path of second power transistor (or a second substitution set of power transistors) TB conducting the current within second half period of the said output signal one creates the sum signal (UA+UB) and the difference signal (UA-UB). From the sum signal (UA+UB) an absolute value |UA+UB| is then derived which is then added to- or subtracted from the above difference signal dependently on the sign of the signal UA across the resistor RA. When the signal UA is positive the proper operation is summation. In contrary when the signal UA is negative one should perform subtraction. As the result one obtains the signal Upp which is proportional to the DC offset of quiescent current flowing through the both high power output transistors TA and TB or through their multi-elemental substitutions. The circuit consists of two current sensing resistors RA and RB introduced in series into high current paths of the respective power output transistors which form the final stage of power amplifier. Each of these resistors is connected to the input of adder 1 which gives (UA+UB) signal as the sum of voltages across RA and RB. Each current sensing resistors RA and RB is connected to the input of second adder 2 which gives the (UA-UB) signal as the difference between the voltages across RA and RB. Output of the first adder 1 is connected via the absolute module function circuit with the input of the third adder 3 whose second input is connected with the output of the second adder 2. At the output of the third adder 3 one obtains signal Upp which is proportional to the offset DC quiescent current of power amplifier.
摘要翻译：用于从晶体管功率放大器的最后阶段提取静态电流的方法和电路，使得能够感测和反馈控制该电流的调节。在这种方式中，从跨过与第一功率晶体管（或第一替代的功率晶体管的替代集合）的高电流路径串联引入的第一电流感测电阻器RA的电压UA在正弦曲线的两个半周期的第一个之前输出信号或是该信号的谐波，以及从与第二功率晶体管（或功率晶体管的第二替代集合）的高电流路径串联引入的第二感测电阻器RB的电压UB，在第二半周期内导通电流所述输出信号之一产生和信号（UA + UB）和差分信号（UA-UB）。从和信号（UA + UB）的绝对值| UA + UB | 然后导出，然后根据上述信号UA在电阻器RA上的符号相加或减去上述差分信号。当信号UA为正时，正确的操作是求和。相反，当信号UA为负时，应进行减法。结果，获得与流过两个高功率输出晶体管TA和TB的静态电流的直流偏移成正比的信号Upp，或通过它们的多元素取代。该电路由两个电流感测电阻器RA和RB串联引入形成功率放大器最终级的各个功率输出晶体管的高电流通路。这些电阻器中的每一个连接到加法器1的输入端，其将（UA + UB）信号作为跨越RA和RB的电压之和。每个电流感测电阻器RA和RB连接到第二加法器2的输入端，该输入端给出（UA-UB）信号作为RA和RB之间的电压之间的差。第一加法器1的输出经由绝对模块功能电路与第二加法器3的输入连接，第三加法器3的第二输入与第二加法器2的输出相连。在第三加法器3的输出端，获得信号Upp，与功率放大器的偏移DC静态电流成正比。

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