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11. 发明申请

US20160028353A1 SYSTEMS, CIRCUITS AND METHODS RELATED TO LOW POWER EFFICIENCY IMPROVEMENT IN MULTI-MODE MULTI-BAND POWER AMPLIFIERS 有权
标题翻译：与多模多功率放大器低功率效率改进相关的系统，电路和方法
公开(公告)号：US20160028353A1
公开(公告)日：2016-01-28
申请号：US14704890
申请日：2015-05-05
申请人： SKYWORKS SOLUTIONS, INC.
发明人： Philip H. THOMPSON , Michael Lynn GERARD , Ramanan BAIRAVASUBRAMANIAN , David Anthony SAWATZKY
IPC分类号： H03F1/56 , H03F3/217 , H03F3/21 , H03F1/02 , H03F3/193
CPC分类号： H03F1/56 , H03F3/19 , H03F3/211 , H03F3/245 , H03F2200/108 , H03F2200/111 , H03F2200/387 , H03F2200/411 , H03F2200/414 , H03F2200/421 , H03F2200/451 , H03F2200/54 , H03F2203/21109 , H03F2203/21145 , H03F2203/21175
摘要： Systems, circuits and methods related to low power efficiency improvement in multi-mode multi-band power amplifiers. In some embodiments, a power-amplifier (PA) system can include a first amplification path having one or more PAs configured to generate a high power radio-frequency (RF) signal from an input RF signal when in a high power mode. The PA system can further include a second amplification path having one or more PAs configured to generate a low power RF signal from the input RF signal when in a low power mode. The PA system can further include a switching circuit coupled to the first amplification path and the second amplification path. The switching circuit can be configured to allow amplification of the input RF signal through the first amplification path in the high power mode or the second amplification path in the low power mode.
摘要翻译：与多模式多波段功率放大器的低功率效率改进相关的系统，电路和方法。在一些实施例中，功率放大器（PA）系统可以包括具有一个或多个PA的第一放大路径，其被配置为当处于高功率模式时从输入RF信号产生高功率射频（RF）信号。 PA系统还可以包括具有一个或多个PA的第二放大路径，其被配置成当处于低功率模式时从输入RF信号产生低功率RF信号。 PA系统还可以包括耦合到第一放大路径和第二放大路径的开关电路。开关电路可以被配置为允许在低功率模式下通过高功率模式或第二放大路径中的第一放大路径放大输入RF信号。

12. 发明授权

US08963644B2 Reconfigurable output matching network for multiple power mode power amplifiers 有权
标题翻译：可重配置输出匹配网络，用于多功率电源功率放大器
公开(公告)号：US08963644B2
公开(公告)日：2015-02-24
申请号：US13849787
申请日：2013-03-25
申请人： Mitsubishi Electric Research Laboratories, Inc.
发明人： Rui Ma , Sushmit Goswami , Koon Hoo Teo , Chunjie Duan
IPC分类号： H03F3/191 , H03G3/00 , H03F1/02 , H03F1/56 , H03F3/189 , H03F3/24 , H03F3/72
CPC分类号： H03G3/008 , H03F1/0277 , H03F1/565 , H03F3/189 , H03F3/191 , H03F3/245 , H03F3/72 , H03F2200/387 , H03F2200/391 , H03F2200/417 , H03F2200/421 , H03F2203/7215 , H03F2203/7221 , H03F2203/7236
摘要： An impedance matching network for a radio frequency (RF) amplifier includes multiple stages connected to each other in a first to last order. A first stage produces an RF output signal, and a last stage receives an RF input signal. Each stage includes a first inductor connected to produce an output signal, a second inductor connected to receive an input signal from a next stage, a capacitor connected between the first and second inductors and a ground. In addition, each stage other than the first stage further includes a first switch to by-pass the first and second inductors, a second switch connected between the first and second inductors and the ground, and a controller for controlling, the first and second switches to select a particular power level of a set of power levels.
摘要翻译：用于射频（RF）放大器的阻抗匹配网络包括以第一到最后的顺序彼此连接的多个级。第一级产生RF输出信号，最后一级接收RF输入信号。每个级包括连接以产生输出信号的第一电感器，连接以接收来自下一级的输入信号的第二电感器，连接在第一和第二电感器之间的电容器和接地。另外，除了第一级之外的每个级还包括第一开关以绕过第一和第二电感器，连接在第一和第二电感器和地之间的第二开关，以及控制器，用于控制第一和第二开关以选择一组功率电平的特定功率电平。

13. 发明申请

US20150048887A1 AMPLIFIER CIRCUIT 审中-公开
标题翻译：放大器电路
公开(公告)号：US20150048887A1
公开(公告)日：2015-02-19
申请号：US14387726
申请日：2013-03-12
申请人： Naoko Nitta , Katsuya Kato , Kenji Mukai , Kenichi Horiguchi , Morishige Hieda , Kazutomi Mori , Kazuya Yamamoto
发明人： Naoko Nitta , Katsuya Kato , Kenji Mukai , Kenichi Horiguchi , Morishige Hieda , Kazutomi Mori , Kazuya Yamamoto
IPC分类号： H03F1/02 , H03F3/193 , H03F3/21
CPC分类号： H03F1/0277 , H03F1/22 , H03F3/193 , H03F3/211 , H03F3/68 , H03F2200/421 , H03F2203/21139 , H03F2203/21175
摘要： An amplifier circuit is configured in such a manner that the withstand voltage between the terminals of a FET 2 (withstand voltage B) is higher than the withstand voltage between the terminals of a FET 1 (withstand voltage A), and that the gate width of the FET 1 (Wg1) is narrower than the gate width of the FET 2 (Wg2). This makes it possible to increase the gain while maintaining high output power. The narrow gate width of the FET 1 (Wg1) connected to an input terminal 3 enables reducing the size of the cascode amplifier.
摘要翻译：放大电路被配置为使得FET2的端子之间的耐电压（耐压B）高于FET1的端子之间的耐电压（耐受电压A），并且栅极宽度 FET 1（Wg1）比FET2的栅极宽度窄（Wg2）。这使得可以在保持高输出功率的同时增加增益。连接到输入端子3的FET1（Wg1）的窄栅极宽度能够减小共源共栅放大器的尺寸。

14. 发明授权

US08515361B2 Frequency correction of a programmable frequency oscillator by propagation delay compensation 有权
标题翻译：通过传播延迟补偿对可编程频率振荡器进行频率校正
公开(公告)号：US08515361B2
公开(公告)日：2013-08-20
申请号：US13198074
申请日：2011-08-04
申请人： Chris Levesque , Jean-Christophe Berchtold , Joseph Hubert Colles
发明人： Chris Levesque , Jean-Christophe Berchtold , Joseph Hubert Colles
IPC分类号： H04B1/40 , H03C3/09 , H03J7/04
CPC分类号： H03C3/09 , H02M3/07 , H02M3/156 , H02M2001/0064 , H02M2001/008 , H03F1/0227 , H03F1/0261 , H03F1/0277 , H03F1/52 , H03F1/523 , H03F1/56 , H03F3/189 , H03F3/195 , H03F3/24 , H03F3/68 , H03F3/72 , H03F2200/102 , H03F2200/171 , H03F2200/18 , H03F2200/27 , H03F2200/336 , H03F2200/411 , H03F2200/414 , H03F2200/417 , H03F2200/421 , H03F2200/426 , H03F2200/429 , H03F2200/504 , H03F2200/555 , H03F2203/21106 , H03F2203/21142 , H03F2203/21145 , H03F2203/21157 , H03F2203/21175 , H03F2203/7209 , H03F2203/7221 , H03F2203/7236 , H03G3/3042 , H03J7/04 , H04B1/405
摘要： A first programmable frequency oscillator, which includes a first ramp comparator and programmable signal generation circuitry is disclosed. The programmable signal generation circuitry provides a ramping signal, which has a first frequency, based on a desired first frequency. The first ramp comparator receives the ramping signal and provides a first ramp comparator output signal based on the ramping signal. The first ramp comparator output signal is fed back to the programmable signal generation circuitry, such that the ramping signal is based on the desired first frequency and the first ramp comparator output signal. However, the first ramp comparator has a first propagation delay, which introduces a frequency error into the programmable frequency oscillator. Therefore, the first frequency is not proportional to one or more slopes of the ramping signal. As a result, the programmable signal generation circuitry compensates for the frequency error based on the desired first frequency.
摘要翻译：公开了一种包括第一斜坡比较器和可编程信号发生电路的第一可编程频率振荡器。可编程信号产生电路基于期望的第一频率提供具有第一频率的斜坡信号。第一斜坡比较器接收斜坡信号，并且基于斜坡信号提供第一斜坡比较器输出信号。第一斜坡比较器输出信号被反馈到可编程信号产生电路，使得斜坡信号基于期望的第一频率和第一斜坡比较器输出信号。然而，第一斜坡比较器具有第一传播延迟，其将频率误差引入到可编程频率振荡器中。因此，第一频率与斜坡信号的一个或多个斜率成正比。结果，可编程信号产生电路基于期望的第一频率来补偿频率误差。

15. 发明授权

US08174315B1 Method and circuit for transforming the impedance of a load 有权
标题翻译：用于变换负载阻抗的方法和电路
公开(公告)号：US08174315B1
公开(公告)日：2012-05-08
申请号：US12430779
申请日：2009-04-27
申请人： Tobias Mangold , Andreas Weisgerber
发明人： Tobias Mangold , Andreas Weisgerber
IPC分类号： H03F1/00
CPC分类号： H03F3/195 , H03F1/56 , H03F2200/387 , H03F2200/421 , H03F2200/541
摘要： According to an embodiment, a method is provided that includes: adapting the impedance of the load dependent on working conditions of the active device using a controllable output-side adaptation network coupled between an output-side terminal of a transformer and an output-side node, to generate an adapted impedance of the load, adjusting the adapted impedance independent of the working conditions of the active device, using the transformer including a first inductor having a first terminal to receive the output of the active device via the input-side node, a second inductor having an output-side terminal, where the second inductor is magnetically coupled to the first inductor.
摘要翻译：根据实施例，提供了一种方法，其包括：使用耦合在变压器的输出侧端子和输出侧节点之间的可控输出侧适配网络来适应负载的有效装置的工作条件的负载阻抗，以产生负载的适应阻抗，使用包括具有第一端子的第一电感器的变压器，经由输入侧节点接收有源器件的输出，调整与有源器件的工作条件无关的适配阻抗，具有输出侧端子的第二电感器，其中所述第二电感器磁耦合到所述第一电感器。

16. 发明申请

US20120087282A1 WIRELESS COMMUNICATION HIGH-FREQUENCY CIRCUIT AND WIRELESS COMMUNICATION APPARATUS 审中-公开
标题翻译：无线通信高频电路和无线通信设备
公开(公告)号：US20120087282A1
公开(公告)日：2012-04-12
申请号：US13329673
申请日：2011-12-19
申请人： Teruhisa SHIBAHARA
发明人： Teruhisa SHIBAHARA
IPC分类号： H04B7/00 , H01P1/10
CPC分类号： H03H7/38 , H03F1/0277 , H03F1/565 , H03F3/189 , H03F3/24 , H03F3/72 , H03F2200/387 , H03F2200/391 , H03F2200/411 , H03F2200/414 , H03F2200/421 , H03F2200/429 , H03F2200/451 , H03F2203/7209 , H03F2203/7215 , H03F2203/7221 , H03F2203/7233 , H03F2203/7236 , H04B1/0067 , H04B1/0458 , H04B1/406
摘要： A wireless communication high-frequency circuit in which a broadband amplifier is shared between multiple communication frequency bands and multiple duplexers are used in order to support the multiple communication frequency bands to improve the transmission efficiency includes a first impedance matching circuit between an output port of an amplifier and a relay switch. A first signal path extends from the output port of the amplifier to the ground in the first impedance matching circuit. An inductor and a variable capacitance element are provided on the first signal path. Second impedance matching circuits are provided between output ports and the input port of the relay switch and transmission signal input ports of duplexers, respectively.
摘要翻译：使用其中在多个通信频带和多个双工器之间共享宽带放大器的无线通信高频电路，以支持多个通信频带以提高传输效率，包括：第一阻抗匹配电路，放大器和继电器开关。第一信号路径在第一阻抗匹配电路中从放大器的输出端口延伸到地。电感器和可变电容元件设置在第一信号路径上。第二阻抗匹配电路分别设置在输出端口和继电器开关的输入端口和双工器的发送信号输入端口之间。

17. 发明授权

US08139792B2 Amplifier circuits, methods of starting and stopping amplifier circuits 有权
标题翻译：放大器电路，启动和停止放大器电路的方法
公开(公告)号：US08139792B2
公开(公告)日：2012-03-20
申请号：US11826369
申请日：2007-07-13
申请人： Anthony James Magrath
发明人： Anthony James Magrath
IPC分类号： H03F99/00
CPC分类号： H03F3/217 , H03F1/305 , H03F3/3022 , H03F3/45475 , H03F3/68 , H03F2200/03 , H03F2200/351 , H03F2200/391 , H03F2200/421 , H03F2203/30027
摘要： An amplifier circuit (100) has an input stage (OP1) and an output stage (Q1, Q2) operating with different supply voltages and different quiescent voltages. The output stage has a feedback input connected to receive a feedback signal from the output of the output stage. A biasing circuit (602) applies a bias signal (Ioff) to said input stage at an operating level appropriate to establish a quiescent output voltage different from a ground reference level of the input stage. To start up the amplifier with minimal transients at the output, the following steps are performed in sequence: (a) with the output stage disabled, pre-charging the amplifier output over a period of time to a level (Vmid) corresponding to the ground reference level of the input stage; (b) with the biasing circuit effectively disabled and a zero input signal at said signal input, enabling the input and output stages; (c) activating said biasing circuit progressively so as to ramp said bias signal (Ioff) to said operating level over a further period of time, thereby driving the output progressively to said quiescent output voltage. A separate improvement is in the biasing circuit, which uses the actual output stage supply voltage (PVdd) as a reference to define the operating level of said bias signal (Ioff).
摘要翻译：放大器电路（100）具有在不同的电源电压和不同静态电压下工作的输入级（OP1）和输出级（Q1，Q2）。输出级具有连接的反馈输入，以从输出级的输出接收反馈信号。偏置电路（602）以适于建立与输入级的接地参考电平不同的静态输出电压的工作电平向所述输入级施加偏置信号（Ioff）。为了在输出端以最小的瞬变启动放大器，按顺序执行以下步骤：（a）在禁止输出级的情况下，将放大器输出在一段时间内预充电到与地对应的电平（Vmid）输入级的参考电平; （b）偏置电路被有效地禁止，并且在所述信号输入处具有零输入信号，使能输入和输出级; （c）逐渐激活所述偏置电路，以便在一段时间内将所述偏置信号（Ioff）斜升到所述工作电平，从而逐渐将输出驱动到所述静态输出电压。在偏置电路中单独的改进是使用实际的输出级电源电压（PVdd）作为参考来定义所述偏置信号（Ioff）的工作电平。

18. 发明授权

US07911277B2 Adaptively tuned RF power amplifier 有权
标题翻译：自适应调谐射频功率放大器
公开(公告)号：US07911277B2
公开(公告)日：2011-03-22
申请号：US12252993
申请日：2008-10-16
申请人： Susanne A. Paul , Marius Goldenberg , Aria Eshraghi
发明人： Susanne A. Paul , Marius Goldenberg , Aria Eshraghi
IPC分类号： H03F3/191
CPC分类号： H03F3/193 , H03F1/56 , H03F3/45179 , H03F2200/102 , H03F2200/204 , H03F2200/378 , H03F2200/387 , H03F2200/405 , H03F2200/421 , H03F2200/451 , H03F2200/534 , H03F2200/541 , H03F2200/78 , H03F2203/45638
摘要： An adaptively tuned RF power amplifier includes at least one power amplifier stage that has one or more active elements. A tunable output network is coupled to the power amplifier stage and includes one or more adjustable reactive elements. A mismatch detector detects a tuning mismatch based, at least in part, on one or more signals present within the tunable output network, and supplies one or more mismatch signals indicative of a detected tuning mismatch. A tuning controller, responsive to the one or more mismatch signals, controls one or more of the one or more adjustable reactive elements in the tunable output network so as to control the detected mismatch.
摘要翻译：自适应调谐的RF功率放大器包括至少一个具有一个或多个有源元件的功率放大器级。可调谐输出网络耦合到功率放大器级并且包括一个或多个可调节的可反应元件。不匹配检测器至少部分地基于存在于可调谐输出网络内的一个或多个信号来检测调谐失配，并提供指示检测到的调谐失配的一个或多个失配信号。响应于一个或多个不匹配信号的调谐控制器控制可调输出网络中的一个或多个可调节的可反应元件中的一个或多个，以便控制检测到的失配。

19. 发明授权

US07821296B2 Stacked buffers 有权
标题翻译：堆叠缓冲区
公开(公告)号：US07821296B2
公开(公告)日：2010-10-26
申请号：US11498994
申请日：2006-08-04
申请人： Lawrence A. Singer , Ronald A. Kapusta, Jr.
发明人： Lawrence A. Singer , Ronald A. Kapusta, Jr.
IPC分类号： H03K19/094
CPC分类号： H03F1/0283 , H03F3/505 , H03F2200/24 , H03F2200/421 , H03F2200/453 , H03F2200/456 , H03F2203/5027 , H03F2203/5031 , H03F2203/5036
摘要： Two or more buffers may configured and arranged such that a quiescent current that flows through and biases a first buffer also flows through and biases a second buffer. The first and second buffers may, for example, be source followers used as reference buffers that drive inputs of a switched-capacitor circuit.
摘要翻译：可以配置和布置两个或更多个缓冲器，使得流过并偏压第一缓冲器的静态电流也流过并偏压第二缓冲器。第一和第二缓冲器可以例如是用作驱动开关电容器电路的输入的参考缓冲器的源极跟随器。

20. 发明申请

US20100111331A1 CLASS D AMPLIFIER 有权
标题翻译： D类放大器
公开(公告)号：US20100111331A1
公开(公告)日：2010-05-06
申请号：US12685884
申请日：2010-01-12
申请人： Sehat Sutardja
发明人： Sehat Sutardja
IPC分类号： H03F99/00 , H03F3/217
CPC分类号： H03F3/2173 , H03F3/217 , H03F2200/421 , H03F2200/78
摘要： A Class D amplifier includes a ramp generator configured to generate a first signal and a second signal. Each of the first signal and the second signal oscillate between a minimum value and a maximum value. A signal generator is configured to receive an input signal, the first signal and the second signal. The input signal has a value that is between the minimum value and the maximum value. A signal generator is configured to generate a third signal and a fourth signal. The third signal is generated based on each of the first signal and the second signal transitioning from a value above the value of the input signal to a value below the value of the input signal. The fourth signal is generated based on each of the first signal and the second signal transitioning from a value below the value of the input signal to a value above the value of the input signal. An output stage is configured to drive a load based on the third signal and the fourth signal.
摘要翻译： D类放大器包括被配置为产生第一信号和第二信号的斜坡发生器。第一信号和第二信号中的每一个在最小值和最大值之间振荡。信号发生器被配置为接收输入信号，第一信号和第二信号。输入信号具有在最小值和最大值之间的值。信号发生器被配置为产生第三信号和第四信号。第三信号是基于第一信号和第二信号中的每一个从从输入信号的值之上的值转换到低于输入信号的值的值来生成的。第四信号基于第一信号和第二信号中的每一个从低于输入信号值的值转换到高于输入信号值的值来产生。输出级被配置为基于第三信号和第四信号来驱动负载。

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