公开(公告)号：US20240136985A1

公开(公告)日：2024-04-25

申请号：US18109876

申请日：2023-02-15

申请人： Shanghai WUQI Microelectronics Co., Ltd.

发明人： Qiang GU

IPC分类号： H03F3/213 ,  H03F3/45

CPC分类号： H03F3/213 ,  H03F3/45179 ,  H03F2200/21

摘要： Bias circuits for CMOS power amplifiers are provided. The bias circuit includes a feedback module, a first bias module, and a second bias module. The feedback module has a first input connected to a output common mode voltage, a second input connected to a reference voltage, and an output connected to gates of main amplification transistors in a first differential amplification module; based on a difference between the output common mode voltage and the reference voltage, the feedback module adjusts gate voltages of main amplification transistors until the output common mode voltage is equal to the reference voltage; the first bias module provides bias voltages for the first differential amplification module; the second bias module provides bias voltages for a second differential amplification module. The present disclosure adopts direct negative feedback and cascoded current mirrors, which realize accurate DC gate bias and accurate control of the output common mode voltage.

公开(公告)号：US11955932B2

公开(公告)日：2024-04-09

申请号：US18322166

申请日：2023-05-23

申请人： pSemi Corporation

发明人： Jonathan James Klaren ,  David Kovac ,  Eric S. Shapiro ,  Christopher C. Murphy ,  Robert Mark Englekirk ,  Keith Bargroff ,  Tero Tapio Ranta

IPC分类号： H03F1/22 ,  H03F1/30 ,  H03F1/56 ,  H03F3/19 ,  H03F3/193 ,  H03F3/195 ,  H03F3/213 ,  H03F3/24

CPC分类号： H03F1/223 ,  H03F1/301 ,  H03F1/56 ,  H03F3/193 ,  H03F3/195 ,  H03F3/213 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/105 ,  H03F2200/165 ,  H03F2200/18 ,  H03F2200/21 ,  H03F2200/222 ,  H03F2200/225 ,  H03F2200/243 ,  H03F2200/294 ,  H03F2200/297 ,  H03F2200/301 ,  H03F2200/306 ,  H03F2200/387 ,  H03F2200/391 ,  H03F2200/399 ,  H03F2200/42 ,  H03F2200/451 ,  H03F2200/48 ,  H03F2200/489 ,  H03F2200/492 ,  H03F2200/498 ,  H03F2200/555 ,  H03F2200/61 ,  H03F2200/78

摘要： Bias circuits and methods for silicon-based amplifier architectures that are tolerant of supply and bias voltage variations, bias current variations, and transistor stack height, and compensate for poor output resistance characteristics. Embodiments include power amplifiers and low-noise amplifiers that utilize a cascode reference circuit to bias the final stages of a cascode amplifier under the control of a closed loop bias control circuit. The closed loop bias control circuit ensures that the current in the cascode reference circuit is approximately equal to a selected multiple of a known current value by adjusting the gate bias voltage to the final stage of the cascode amplifier. The final current through the cascode amplifier is a multiple of the current in the cascode reference circuit, based on a device scaling factor representing the relative sizes of the transistor devices in the cascode amplifier and in the cascode reference circuit.

公开(公告)号：US20180316323A1

公开(公告)日：2018-11-01

申请号：US15964776

申请日：2018-04-27

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Yoshiyuki SUGIMOTO

IPC分类号： H03F3/45 ,  H03F3/68 ,  H03F1/02 ,  H03F1/34

CPC分类号： H03F3/45085 ,  H03F1/0233 ,  H03F1/34 ,  H03F3/45094 ,  H03F3/45475 ,  H03F3/45529 ,  H03F3/50 ,  H03F3/68 ,  H03F2200/126 ,  H03F2200/153 ,  H03F2200/165 ,  H03F2200/21 ,  H03F2200/234 ,  H03F2200/267 ,  H03F2200/303 ,  H03F2200/93 ,  H03F2203/45021 ,  H03F2203/45022 ,  H03F2203/45026 ,  H03F2203/45146 ,  H03F2203/45151 ,  H03F2203/45154 ,  H03F2203/45156 ,  H03F2203/45418 ,  H03F2203/45548 ,  H03F2203/45556 ,  H03F2203/45571 ,  H03F2203/45578 ,  H03F2203/45592 ,  H03F2203/45596 ,  H03F2203/45671 ,  H03F2203/5033

摘要： An amplifier that amplifies a differential signal includes first and second input terminals for receiving two input signals; first and second diodes each including anode and cathode, the anodes being electrically connected to the first and second input terminals; first and second bias current sources being respectively electrically connected to the cathodes of the first and second diodes; an operational amplifier connected to the cathode of the first diode and the cathode of the second diode and configured to amplify a differential signal between signals generated at the cathodes of the first and second diodes; a capacitive element being electrically connected between an input and an output of the operational amplifier; and a differential amplifier provided between the operational amplifier and the first and second input terminals and configured to amplify the two input signals. The first and second bias current sources include a current mirror circuit.

公开(公告)号：US20180241348A1

公开(公告)日：2018-08-23

申请号：US15888031

申请日：2018-02-04

申请人： ONKYO Corporation

发明人： Tsuyoshi KAWAGUCHI ,  Norimasa KITAGAWA ,  Takuya OKA

IPC分类号： H03F1/02 ,  H03F3/183 ,  H03F3/21

CPC分类号： H03F1/0205 ,  H03F1/30 ,  H03F1/34 ,  H03F3/181 ,  H03F3/183 ,  H03F3/21 ,  H03F3/26 ,  H03F3/50 ,  H03F2200/03 ,  H03F2200/151 ,  H03F2200/21 ,  H03F2200/408 ,  H03F2203/5036

摘要： A first circuit unit of an audio amplifier includes a first emitter follower connected to an pre stage input terminal, a second emitter follower connected to an pre stage input terminal, a main transistor connected to an output path of the first emitter follower and an output path of the second emitter follower, a first resistor and a second resistor, which are series-connected between the output path of the first emitter follower and a DC voltage source, and a zener diode connected to a series-connection point between the first resistor and the second resistor. A second circuit unit has a circuit configuration that is complementary to the first circuit unit. A path leading to a collector of each transistor configuring the first and second emitter followers in one of the circuit units is connected to the series-connection point in the other circuit unit.

公开(公告)号：US20180061984A1

公开(公告)日：2018-03-01

申请号：US15250220

申请日：2016-08-29

申请人： MACOM Technology Solutions Holdings, Inc.

发明人： Benone Achiriloaie ,  Eric Hokenson

IPC分类号： H01L29/78 ,  H01L29/20 ,  H01L29/866

CPC分类号： H01L29/7838 ,  H01L29/2003 ,  H01L29/866 ,  H03F1/025 ,  H03F1/0266 ,  H03F1/523 ,  H03F3/193 ,  H03F3/245 ,  H03F2200/12 ,  H03F2200/15 ,  H03F2200/18 ,  H03F2200/21 ,  H03F2200/222 ,  H03F2200/27 ,  H03F2200/297 ,  H03F2200/387 ,  H03F2200/42 ,  H03F2200/451 ,  H03F2200/471 ,  H03F2200/48 ,  H03F2200/519 ,  H03F2200/522 ,  H03F2200/555 ,  H03F2200/75 ,  H03F2200/99

摘要： A transistor circuit includes a transistor having a gate terminal and first and second conduction terminals, a first circuit configured to convert an AC input signal of the transistor circuit to a gate bias voltage and to apply the gate bias voltage to the gate terminal of the transistor, a second circuit configured to convert the AC input signal of the transistor circuit to a control voltage, and a switching circuit configured to apply a first voltage to the first conduction terminal of the transistor in response to the control voltage.

公开(公告)号：US09800219B2

公开(公告)日：2017-10-24

申请号：US15147902

申请日：2016-05-05

申请人： MEDIATEK INC.

发明人： Huai-Te Wang

IPC分类号： H03F1/34 ,  H03F3/50

CPC分类号： H03F3/505 ,  H03F1/342 ,  H03F2200/129 ,  H03F2200/144 ,  H03F2200/21 ,  H03F2200/303 ,  H03F2200/42 ,  H03F2200/69 ,  H03F2203/45061 ,  H03F2203/45084 ,  H03F2203/5024

摘要： An apparatus for performing capacitor amplification in an electronic device may include a first resistor and a second resistor that are connected in series and coupled between a set of input terminals of a receiver in the electronic device, a common mode capacitor having a first terminal coupled to a common mode terminal and having a second terminal, and an alternating current (AC)-coupled amplifier that is coupled between the common mode terminal and the second terminal of the common mode capacitor. The first resistor and the second resistor may be arranged for obtaining a common mode voltage at the common mode terminal between the first resistor and the second resistor. In addition, the common mode capacitor may be arranged for reducing a common mode return loss. Additionally, the AC-coupled amplifier may be arranged for performing capacitor amplification for the common mode capacitor.

公开(公告)号：US20170085223A1

公开(公告)日：2017-03-23

申请号：US15272173

申请日：2016-09-21

申请人： Skyworks Solutions, Inc.

发明人： Lothar Musiol ,  Yang Liu ,  Parham Hesamaddin ,  Lisette L. Zhang ,  Oleksandr Gorbachov

IPC分类号： H03F1/02 ,  H03F3/193 ,  H04B1/40 ,  H03F3/24

CPC分类号： H04B1/40 ,  G05F3/262 ,  H01L23/66 ,  H01L2223/6644 ,  H03F1/0261 ,  H03F1/30 ,  H03F1/301 ,  H03F1/304 ,  H03F3/193 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/18 ,  H03F2200/21 ,  H03F2200/294 ,  H03F2200/451

摘要： A current mirror circuit connectible to an amplifier circuit to set a bias point thereof includes a current mirror circuit, and a bias resistor connected thereto. The bias resistor is connectible to the amplifier circuit. A first helper circuit is connected in parallel with the bias resistor, and is selectively activated for a first predetermined duration by a first control signal. The activated first helper circuit defines a lower resistance path relative to the bias resistor to shorten a rising transient response of the amplifier circuit as the current mirror circuit is activated.

公开(公告)号：US20160365859A1

公开(公告)日：2016-12-15

申请号：US14862520

申请日：2015-09-23

申请人： MEDIATEK INC.

发明人： Fei Song ,  Osama Shana'a ,  Yuen Hui Chee

IPC分类号： H03K19/0185 ,  H04B1/40

CPC分类号： H03K19/018514 ,  H03F3/195 ,  H03F3/3001 ,  H03F3/3028 ,  H03F3/3033 ,  H03F3/3037 ,  H03F3/45201 ,  H03F3/45475 ,  H03F3/505 ,  H03F2200/21 ,  H03F2200/42 ,  H03F2200/451 ,  H03F2200/498 ,  H03F2200/69 ,  H03F2200/75 ,  H03F2203/45136 ,  H03F2203/45168 ,  H03F2203/45224 ,  H03F2203/45258 ,  H03F2203/45301 ,  H03F2203/45496 ,  H03F2203/45544 ,  H03F2203/45596 ,  H03F2203/45656 ,  H03F2203/45674 ,  H04B1/40 ,  H04B2001/0425

摘要： A wideband highly-linear buffer circuit exhibiting a low output impedance comprises a first PFET (PFET1), a second PFET (PFET2), a first NFET (NFET1), and a second NFET (NFET2). Sources of PFET1 and PFET2 are coupled to VDD. PFET1's drain is coupled to an output lead. PFET2 acts as a current source. NFET1's drain is coupled to PFET2's drain and to PFET1's gate. NFET1's source is coupled to the output lead. NFET2's source is coupled to ground. NFET2's drain is coupled to NFET1's source and to the output lead. NFET1's gate is AC coupled to a first input lead. In a single-ended input example, NFET2's gate is AC coupled NFET1's drain. In a differential input example, NFET2's gate is AC coupled to a second input lead. In another differential input example, PFET2 is not just a current source, but rather PFET2's gate is AC coupled to the first input lead.

摘要翻译： 呈现低输出阻抗的宽带高线性缓冲电路包括第一PFET（PFET1），第二PFET（PFET2），第一NFET（NFET1）和第二NFET（NFET2）。 PFET1和PFET2的源极耦合到VDD。 PFET1的漏极耦合到输出引线。 PFET2作为电流源。 NFET1的漏极耦合到PFET2的漏极和PFET1的栅极。 NFET1的源极耦合到输出引线。 NFET2的源极耦合到地。 NFET2的漏极耦合到NFET1的源极和输出引线。 NFET1的栅极与第一个输入引线交流耦合。 在单端输入示例中，NFET2的栅极是交流耦合NFET1的漏极。 在差分输入示例中，NFET2的栅极被AC耦合到第二输入引线。 在另一个差分输入示例中，PFET2不仅仅是电流源，而是PFET2的栅极与第一个输入引线交流耦合。

公开(公告)号：US09407210B2

公开(公告)日：2016-08-02

申请号：US14803693

申请日：2015-07-20

申请人： BAE Systems Information and Electronic Systems Integration Inc.

发明人： James J. Komiak

IPC分类号： H03F1/22 ,  H03F3/193 ,  H03F3/21 ,  H01L23/66 ,  H03F3/60

CPC分类号： H03F1/223 ,  H01L23/66 ,  H01L2924/0002 ,  H03F3/193 ,  H03F3/21 ,  H03F3/601 ,  H03F2200/12 ,  H03F2200/121 ,  H03F2200/21 ,  H03F2200/36 ,  H03F2200/543 ,  H03F2200/75 ,  H01L2924/00

摘要： An amplifier for amplifying signals is presented. A cascode power amplifies includes two or more adjacent cascode amplifiers and at least one remote cascode amplifier. The adjacent cascode amplifiers are lined up adjacent each other with inputs of the adjacent cascode amplifiers connected to a common input line and outputs of the of adjacent cascode amplifiers connected to a common output line. The adjacent cascode amplifiers generally operate in parallel. The remote cascode amplifier is spaced apart from the adjacent cascade amplifiers. An input transmission line connects an input of the remote cascode amplifier to the common input line. An output transmission line connects an output of the remote cascode amplifier to the common output line. Amplified outputs of the adjacent cascode amplifiers and amplified outputs of the remote cascode amplifier are power combined and summed into a coherent amplified output signal that is output on the output transmission line.

摘要翻译： 提出了放大信号放大器。 共源共栅功率放大器包括两个或更多相邻的共源共栅放大器和至少一个远程共源共栅放大器。 相邻的共源共栅放大器彼此相邻排列，其相邻共源共栅放大器的输入连接到公共输入线，并且连接到公共输出线的相邻级联放大器的输出。 相邻的共源共栅放大器通常并行运行。 远程共源共栅放大器与相邻级联放大器间隔开。 输入传输线将远程共源共栅放大器的输入端与公共输入线相连。 输出传输线将远程共源共栅放大器的输出连接到公共输出线。 相邻级联放大器的放大输出和远程共源共栅放大器的放大输出被功率组合并相加在输出传输线上输出的相干放大输出信号。

公开(公告)号：US20160211812A1

公开(公告)日：2016-07-21

申请号：US14914067

申请日：2013-08-29

申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

发明人： Zhanyu WU

IPC分类号： H03F1/56 ,  H04W88/08 ,  H03F1/02 ,  H03F3/00 ,  H03F3/193 ,  H03F3/21

CPC分类号： H03F1/56 ,  H03F1/0205 ,  H03F1/305 ,  H03F3/005 ,  H03F3/193 ,  H03F3/21 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/18 ,  H03F2200/21 ,  H03F2200/267 ,  H03F2200/27 ,  H03F2200/451 ,  H03F2200/522 ,  H03F2200/555 ,  H04W88/08

摘要： A driver circuit for a power amplifier of a radio base station. The driver circuit comprises a radio frequency input, an output for connection to a power amplifier, a combiner connected to the radio frequency input and a first bias leg. The first bias leg comprises a bias source input, a first capacitor leg and a second capacitor, wherein the first capacitor leg is connected between the combiner and ground, and the second capacitor is connected between the combiner and ground. The first capacitor leg comprises a first switch and a first capacitor, the first switch being provided between the combiner and the first capacitor such that, in a first state, the first capacitor is connected to the combiner and, in a second state, the first capacitor is disconnected from the combiner. A corresponding power amplifier assembly, radio base station and method are also presented.

摘要翻译： 一种用于无线电基站功率放大器的驱动电路。 驱动器电路包括射频输入，用于连接到功率放大器的输出，连接到射频输入的组合器和第一偏置支路。 第一偏置支路包括偏置源输入端，第一电容支路和第二电容器，其中第一电容器支路连接在组合器和地之间，第二电容器连接在组合器和地之间。 第一电容器支腿包括第一开关和第一电容器，第一开关设置在组合器和第一电容器之间，使得在第一状态下，第一电容器连接到组合器，并且在第二状态下，第一电容器第一 电容器与组合器断开连接。 还提出了相应的功率放大器组件，无线电基站和方法。