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1. 发明申请

US20180069742A1 COMPENSATION CIRCUIT OF POWER AMPLIFIER AND ASSOCIATED COMPENSATION METHOD 有权
公开(公告)号：US20180069742A1
公开(公告)日：2018-03-08
申请号：US15647275
申请日：2017-07-12
申请人： MEDIATEK INC.
发明人： Chien-Cheng Lin , Ming-Da Tsai
IPC分类号： H04L27/36 , H03D7/16 , H03F1/32 , H03C3/08
CPC分类号： H04L27/366 , H03C3/08 , H03D7/166 , H03F1/14 , H03F1/3205 , H03F1/3211 , H03F1/3264 , H03F3/21 , H03F3/45179 , H03F3/45183 , H03F2200/21 , H03F2200/213 , H03F2200/228 , H03F2200/249 , H03F2200/471 , H03F2200/489 , H03F2200/492 , H03F2200/534 , H03F2200/75 , H03F2201/3218 , H03F2203/45036 , H03F2203/45101 , H03F2203/45112 , H03F2203/45134 , H03F2203/45136 , H03F2203/45138 , H03F2203/45146 , H03F2203/45151 , H03F2203/45156 , H03F2203/45168 , H03F2203/45172 , H03F2203/45208 , H03F2203/45256 , H03F2203/45292 , H03F2203/45312 , H03F2203/45356 , H03F2203/45374 , H03F2203/45386 , H03F2203/45402 , H03F2203/45436 , H03F2203/45544 , H03F2203/45596 , H03F2203/45622 , H04B2001/0408
摘要： A compensation circuit of a power amplifier includes a varactor, a voltage sensor and a control circuit. The varactor is coupled to an input terminal of the power amplifier. The voltage sensor is arranged for detecting an amplitude of an input signal of the power amplifier to generate a detecting result. The control circuit is coupled to the varactor and the voltage sensor, and is arranged for controlling a bias voltage of the varactor to adjust a capacitance of the varactor according to the detecting result.

2. 发明授权

US09793861B1 Amplification systems 有权
公开(公告)号：US09793861B1
公开(公告)日：2017-10-17
申请号：US15221928
申请日：2016-07-28
申请人： QUALCOMM Incorporated
发明人： Thomas Somerville
IPC分类号： H03F3/45 , H03F1/02 , H03F1/34
CPC分类号： H03F1/0222 , H03F1/0227 , H03F1/086 , H03F1/342 , H03F3/195 , H03F3/213 , H03F3/245 , H03F3/45179 , H03F3/45475 , H03F3/45982 , H03F2200/102 , H03F2200/372 , H03F2200/375 , H03F2200/393 , H03F2200/451 , H03F2200/462 , H03F2200/498 , H03F2200/75 , H03F2200/78 , H03F2203/45038 , H03F2203/45116 , H03F2203/45136 , H03F2203/45138 , H03F2203/45146 , H03F2203/45151 , H03F2203/45152 , H03F2203/45156 , H03F2203/45212 , H03F2203/45288 , H03F2203/45336 , H03F2203/45354 , H03F2203/45356 , H03F2203/45528 , H03F2203/45544 , H03F2203/45586 , H03F2203/45588 , H03F2203/45596 , H03F2203/45601
摘要： Certain aspects of the present disclosure provide methods and apparatus for implementing an amplification system. The amplification system includes an amplifier comprising differential inputs and an output. The differential inputs include an inverting input and a non-inverting input. The amplification system further includes a feedback path from the output coupled to the inverting input. The feedback path from the output is coupled to at least one of an inverting amplifier or buffer, and the at least one of the inverting amplifier or buffer is further coupled to the non-inverting input.

3. 发明授权

US09041465B2 Amplifier circuits 有权
标题翻译：放大器电路
公开(公告)号：US09041465B2
公开(公告)日：2015-05-26
申请号：US14444063
申请日：2014-07-28
申请人： NXP B.V.
发明人： Gerard Jean-Louis Bouisse
IPC分类号： H03F3/45 , H03F3/16 , H01L27/07 , H03F3/193 , H01L29/78 , H03F3/21
CPC分类号： H03F3/45179 , H01L27/0705 , H01L27/088 , H01L29/7817 , H01L2224/49175 , H03F3/193 , H03F3/21 , H03F3/265 , H03F3/45 , H03F3/45183 , H03F2200/06 , H03F2200/255 , H03F2203/45356 , H03F2203/45481
摘要： Differential amplifier circuits for LDMOS-based amplifiers are disclosed. The differential amplifier circuits comprise a high resistivity substrate and separate DC and AC ground connections. Such amplifier circuits may not require thru-substrate vias for ground connection.
摘要翻译：公开了用于基于LDMOS的放大器的差分放大器电路。差分放大器电路包括高电阻衬底和单独的DC和AC接地连接。这种放大器电路可能不需要用于接地连接的通孔衬底通孔。

4. 发明申请

US20140210547A1 OPERATIONAL AMPLIFIER CIRCUIT 有权
标题翻译：操作放大器电路
公开(公告)号：US20140210547A1
公开(公告)日：2014-07-31
申请号：US14167104
申请日：2014-01-29
申请人： Seiko Instruments Inc.
发明人： Tsutomu TOMIOKA
IPC分类号： H03F1/26
CPC分类号： H03F1/26 , G06G7/186 , H03F3/387 , H03F3/45475 , H03F2203/45138 , H03F2203/45356 , H03F2203/45512
摘要： Provided is an operational amplifier circuit having a high tolerance for clock phase difference fluctuations. An FIR filter is used to add an input signal of the FIR filter to a signal obtained by delaying the input signal of the FIR filter. In this manner, chopper noise can be removed. Thus, the operational amplifier circuit may have a high tolerance for clock phase difference fluctuations regardless of the phase difference between clocks for controlling a chopper circuit and the FIR filter.
摘要翻译：提供了对时钟相位差波动具有高容差的运算放大器电路。 FIR滤波器用于将FIR滤波器的输入信号添加到通过延迟FIR滤波器的输入信号而获得的信号。以这种方式，可以去除斩波噪声。因此，与用于控制斩波电路和FIR滤波器的时钟之间的相位差无关，运算放大器电路可能具有对时钟相位差波动的高容差。

5. 发明授权

US08749275B2 Differential circuit 有权
标题翻译：差分电路
公开(公告)号：US08749275B2
公开(公告)日：2014-06-10
申请号：US13811477
申请日：2011-09-05
申请人： Fumihiro Inoue
发明人： Fumihiro Inoue
IPC分类号： H03K5/22
CPC分类号： H03K5/24 , H03F3/45192 , H03F2203/45356 , H03K3/0231 , H03K5/2481
摘要： A differential circuit includes a first input part; a second input part; a reference voltage input part, the reference voltage input part being common to form differential pairs; a current source that drives the differential pairs; a current mirror that generates a first output current and a second output current, according to a current that flows through the reference voltage input part according to at least one voltage difference of first and second voltage differences; a first output part that outputs a signal according to the first voltage difference, according to a current that flows through the first input part according to the first voltage difference and the first output current; and a second output part that outputs a signal according to the second voltage difference, according to a current that flows through the second input part according to the second voltage difference and the second output current.
摘要翻译：差分电路包括第一输入部分; 第二输入部分; 参考电压输入部分，参考电压输入部分共同形成差分对; 驱动差分对的电流源; 根据根据第一和第二电压差的至少一个电压差流过参考电压输入部分的电流产生第一输出电流和第二输出电流的电流镜; 根据第一电压差和第一输出电流流过第一输入部分的电流，输出根据第一电压差的信号的第一输出部分; 以及第二输出部，其根据根据第二电压差和第二输出电流流过第二输入部的电流，根据第二电压差输出信号。

6. 发明授权

US08742848B1 Common mode rejection ratio versus frequency in instrumentation amplifier 有权
标题翻译：仪表放大器中的共模抑制比对频率
公开(公告)号：US08742848B1
公开(公告)日：2014-06-03
申请号：US13829567
申请日：2013-03-14
申请人： Linear Technology Corporation
发明人： Thomas Lloyd Botker
IPC分类号： H03F3/45
CPC分类号： H03F3/4508 , H03F3/45618 , H03F2200/261 , H03F2203/45356
摘要： A method of fabricating an instrumentation amplifier to have an improved common mode rejection ratio (CMRR) vs. frequency initially trims resistors in the input amplifiers of the instrumentation amplifier during a DC test, where the inputs are shorted and a DC voltage is applied, so that the output of the amplifier is approximately zero. This will normally cause the transconductances of the two input amplifiers to be different. Thus, the AC CMRR will degrade with frequency. Trimmable capacitors are provided in the input section and are trimmed during a common mode AC test to cause the output voltage to be minimized during the AC test. This causes the two input amplifiers to have the same bandwidth and gm/C ratio.
摘要翻译：在直流测试期间，在输入短路和施加直流电压的情况下，制造具有改进的共模抑制比（CMRR）与频率的仪器放大器的方法最初对仪表放大器的输入放大器中的电阻器进行微调，因此放大器的输出大约为零。这通常会导致两个输入放大器的跨导不同。因此，AC CMRR将随着频率而降级。在输入部分提供了可调电容器，并在共模交流测试期间进行了修整，以在AC测试期间使输出电压最小化。这使得两个输入放大器具有相同的带宽和gm / C比。

7. 发明申请

US20130344838A1 LOW-NOISE AMPLIFIERS FOR RF RECEIVER 有权
标题翻译：射频接收机的低噪声放大器
公开(公告)号：US20130344838A1
公开(公告)日：2013-12-26
申请号：US13530251
申请日：2012-06-22
申请人： Qiang Li , Si-Ning Zhou , Chih-Ming Hung
发明人： Qiang Li , Si-Ning Zhou , Chih-Ming Hung
IPC分类号： H04B1/10 , H03F3/45
CPC分类号： H03F1/26 , H03F1/3211 , H03F3/45179 , H03F2200/294 , H03F2203/45356 , H03F2203/45386
摘要： Disclosed are low-noise amplifiers and SAW-less receivers. An exemplary amplifier includes at least two amplifier modules. The amplifier modules share a common output node and comprise a common input to which the amplifier modules are AC or DC coupled for receiving an inbound RF signal. The amplifier modules operate at different biases.
摘要翻译：公开了低噪声放大器和无SAW接收器。示例性放大器包括至少两个放大器模块。放大器模块共享公共输出节点并且包括公共输入，放大器模块被AC或DC耦合到该输入端以接收入站RF信号。放大器模块以不同的偏置运行。

8. 发明授权

US08581661B2 Audio programmable gain amplifier with automatic reconfiguration 有权
标题翻译：具有自动重构功能的音频可编程增益放大器
公开(公告)号：US08581661B2
公开(公告)日：2013-11-12
申请号：US13280221
申请日：2011-10-24
申请人： Brian W. Friend , Christian Larsen
发明人： Brian W. Friend , Christian Larsen
IPC分类号： H03F3/45
CPC分类号： H03F3/187 , H03F3/45475 , H03F3/45928 , H03F2200/261 , H03F2200/453 , H03F2203/45356 , H03F2203/45528 , H03F2203/45536 , H03F2203/45544 , H03F2203/45616 , H03F2203/45696 , H03F2203/45702 , H03G1/0088
摘要： A reconfigurable amplifier comprising a first operational amplifier having two inputs and an output. A second operational amplifier having two inputs and an output. A plurality of switches coupled to the two inputs and the output of the first operational amplifier and the two inputs and the output of the second operational amplifier, wherein a first configuration of the plurality of switches causes the first operational amplifier and the second operational amplifier to operate as an inverting differential input amplifier, and wherein a second configuration of the plurality of switches causes the first operational amplifier and the second operational amplifier to operate as a non-inverting differential input instrumentation amplifier.
摘要翻译：一种可重构放大器，包括具有两个输入和一个输出的第一运算放大器。具有两个输入和一个输出的第二运算放大器。耦合到两个输入的多个开关和第一运算放大器的输出以及第二运算放大器的两个输入和输出，其中多个开关的第一配置使得第一运算放大器和第二运算放大器用作反相差分输入放大器，并且其中多个开关的第二配置使得第一运算放大器和第二运算放大器作为非反相差分输入仪表放大器工作。

9. 发明授权

US08456215B2 Limiting amplifier and method thereof 有权
标题翻译：限幅放大器及其方法
公开(公告)号：US08456215B2
公开(公告)日：2013-06-04
申请号：US13244626
申请日：2011-09-25
申请人： Chia-Liang Lin
发明人： Chia-Liang Lin
IPC分类号： H03L5/00
CPC分类号： H03F3/45076 , H03F1/34 , H03F3/45183 , H03F3/45197 , H03F3/45475 , H03F2203/45344 , H03F2203/45356 , H03F2203/45521
摘要： A limiting amplifier and method are provided. In one implementation an apparatus includes a plurality of amplifier stages including a first amplifier stage and a last amplifier stage configured in a cascade arrangement, and a transconductance amplifier, wherein the first amplifier stage is configured to receive an input signal; the last amplifier stage outputs an output signal; the transconductance amplifier is configured receive a voltage signal from the last amplifier stage via a first resistor; and the transconductance amplifier is configured to output a current signal to an output node of the first amplifier stage via a second resistor in a negative feedback manner.
摘要翻译：提供限幅放大器和方法。在一个实现中，一种装置包括多个放大器级，包括以级联方式配置的第一放大器级和最后一级放大器级以及跨导放大器，其中第一放大器级被配置为接收输入信号; 最后一个放大器级输出一个输出信号; 跨导放大器被配置为经由第一电阻器从最后的放大器级接收电压信号; 并且所述跨导放大器经配置以负反馈方式经由第二电阻器将电流信号输出到所述第一放大器级的输出节点。

10. 发明授权

US08169263B2 Differential gm-boosting circuit and applications 有权
标题翻译：差分升压电路及应用
公开(公告)号：US08169263B2
公开(公告)日：2012-05-01
申请号：US12639900
申请日：2009-12-16
申请人： Adrià Bofill-Petit , Xavier Redondo-Navarro
发明人： Adrià Bofill-Petit , Xavier Redondo-Navarro
IPC分类号： H03F3/45
CPC分类号： H03F3/45197 , H03F2203/45134 , H03F2203/45288 , H03F2203/45356
摘要： A fully-differential circuit includes a differential gm-boosting circuit and/or a differential output circuit. The use of differential gm-boosting and output circuits improves input common-mode and power-supply noise rejection relative to the prior art. The fully differential gm-boosted circuit may be used in a wide variety of applications.
摘要翻译：全差分电路包括差分gm升压电路和/或差分输出电路。使用差分升压和输出电路相对于现有技术改进了输入共模和电源噪声抑制。全差分gm升压电路可用于各种应用。

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