公开(公告)号：US06792282B1

公开(公告)日：2004-09-14

申请号：US09666698

申请日：2000-09-21

Applicant: William J. Domino ,  Dmitriy Rozenblit ,  Morten Damgaard ,  Nooshin D. Vakilian

Inventor： William J. Domino ,  Dmitriy Rozenblit ,  Morten Damgaard ,  Nooshin D. Vakilian

IPC: H04B102

CPC classification number: H03G3/3047 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/206 ,  H03G2201/307

Abstract: A translation loop modulator and power amplifier in a phase and amplitude modulated transmission environment includes a translation loop having a phase locked loop and that is configured to receive a first modulated signal (PM) and that is also configured to provide a frequency specific modulated signal. The invention also includes a power amplifier configured to receive the frequency specific modulated signal, a variable gain element configured to provide a second modulated signal (AM) to the power amplifier and a switching element configured to receive a portion of an output of the translation loop and a portion of an output power of the power amplifier. The switching element is configured to apply the output portion of the translation loop to an input of the translation loop during a first time period and apply the detected output power portion of the power amplifier to the input of the translation loop during a second time period, thus allowing the phase locked loop in the translation loop to correct for any phase shift caused by the power amplifier.

Abstract translation: 在相位和幅度调制传输环境中的平移环路调制器和功率放大器包括具有锁相环的平移环路，并且被配置为接收第一调制信号（PM），并且还被配置为提供频率特定调制信号。 本发明还包括被配置为接收频率特定调制信号的功率放大器，被配置为向功率放大器提供第二调制信号（AM）的可变增益元件和被配置为接收转换回路的输出的一部分的开关元件 和功率放大器的输出功率的一部分。 开关元件被配置为在第一时间段期间将平移环路的输出部分施加到平移环路的输入端，并且在第二时间周期期间将功率放大器的检测输出功率部分施加到平移环路的输入端， 从而允许平移环路中的锁相环校正由功率放大器引起的任何相移。

公开(公告)号：US06731167B2

公开(公告)日：2004-05-04

申请号：US09961250

申请日：2001-09-25

Applicant: Masashi Suzuki ,  Hitoshi Akamine ,  Tetsuaki Adachi ,  Takahiro Sato ,  Masashi Maruyama ,  Susumu Takada

Inventor： Masashi Suzuki ,  Hitoshi Akamine ,  Tetsuaki Adachi ,  Takahiro Sato ,  Masashi Maruyama ,  Susumu Takada

IPC: H03G516

CPC classification number: H01L27/0629 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/49111 ,  H01L2224/49175 ,  H03F1/301 ,  H03F3/193 ,  H03F2200/294 ,  H03F2200/372 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H03G2201/40 ,  H01L2924/00014

Abstract: The number of components of a high frequency power amplifier is reduced. A bias resistance ratio is adjusted in accordance with a change in the threshold voltage Vth of a transistor. A high frequency power amplifier has a plurality of amplifying systems. Each of these systems has an input terminal to which a signal to be amplified is supplied, an output terminal, a bias terminal, a plurality of amplifying stages which are sequentially cascaded between the input and output terminals, and a bias circuit connected to the bias terminal and each of the amplifying stages to apply a bias potential to the amplifying stage. The amplifying stage includes a control terminal for receiving an input signal and the bias potential supplied to the stage and a first terminal for transmitting an output signal of the stage.

Abstract translation: 高频功率放大器的组件数量减少。 根据晶体管的阈值电压Vth的变化来调整偏置电阻比。 高频功率放大器具有多个放大系统。 这些系统中的每一个都具有供给要被放大的信号的输入端子，输出端子，偏置端子，在输入和输出端子之间顺序级联的多个放大级，以及连接到偏置的偏置电路 端子和每个放大级以向放大级施加偏置电位。 放大级包括用于接收输入信号和提供给级的偏置电位的控制端子和用于发送级的输出信号的第一端子。

公开(公告)号：US20240297628A1

公开(公告)日：2024-09-05

申请号：US18592918

申请日：2024-03-01

Applicant: Skyworks Solutions, Inc.

Inventor： Neal J. Tuffy ,  Martin John O’Flaherty ,  Tomas J. Tansley ,  Valter Karavanic

IPC: H03G3/30 ,  H03F3/24 ,  H04W52/52 ,  H04W84/12

CPC classification number: H03G3/3042 ,  H03F3/245 ,  H04W52/52 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307 ,  H04W84/12

Abstract: A power amplifier includes a power amplifier stage configured to amplify a signal received from an attenuator or from a variable gain amplifier. An open loop transient gain compensation circuit compensates a transient turn-on gain variation of the power amplifier stage with a transient compensation current added to a bias current supplied to the attenuator or supplied to the variable gain amplifier.

公开(公告)号：US11864812B2

公开(公告)日：2024-01-09

申请号：US16562362

申请日：2019-09-05

Applicant: Applied Medical Resources Corporation

Inventor： Michael Nguyen ,  Igor Gorin ,  Joanna Pang

IPC: A61B18/12 ,  A61B18/00 ,  A61B18/14

CPC classification number: A61B18/1206 ,  A61B18/1445 ,  A61B2018/0063 ,  A61B2018/00601 ,  A61B2018/00642 ,  A61B2018/00726 ,  A61B2018/00767 ,  A61B2018/00779 ,  A61B2018/00827 ,  A61B2018/00875 ,  A61B2018/00892 ,  H03F2200/129 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307

Abstract: Systems and methods for enhancing surgical outcomes by providing generators having optimal RF output for sealing, fusing and/or cutting tissue or vessels under all dynamic conditions are described. Examples of dynamic conditions may include varying tissue impedance load due to electrosurgical operations or tissue affects, any operational conditions and commands determined by the surgeon, surgical procedure and/or device script. This is achieved by implementing a digital closed-loop control system within the electrosurgical generator to regulate voltage, current, and power of the RF output. The digital closed-loop control system may include an RF amplifier for generating RF energy, a feedback system for constantly monitoring the electrical characteristics, e.g., voltage, current, and power, of the supplied RF energy to a connectable electrosurgical instrument and a microcontroller for processing measurement data from the feedback system and adjusting the output of the RF amplifier to meet a desired regulation target under any varying conditions.

公开(公告)号：US20230421114A1

公开(公告)日：2023-12-28

申请号：US17847761

申请日：2022-06-23

Applicant: WOLFSPEED, INC.

Inventor： Christophe JOLY

IPC: H03F1/56 ,  H03G3/30 ,  H03F3/24

CPC classification number: H03F1/565 ,  H03G3/30 ,  H03F3/245 ,  H03F2200/222 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307

Abstract: An amplifier includes an input impedance matching network; at least one transistor; and a gain equalizer configured to equalize gain. The gain equalizer is connected to components of the input impedance matching network.

公开(公告)号：US11848654B2

公开(公告)日：2023-12-19

申请号：US16893137

申请日：2020-06-04

Applicant: Wilson Electronics, LLC

Inventor： Christopher Ken Ashworth ,  Patrick Lee Cook ,  Dale Robert Anderson

IPC: H03G3/30 ,  H03F3/24 ,  H04L5/14 ,  H04W16/26 ,  H04B7/155

CPC classification number: H03G3/3042 ,  H03F3/245 ,  H04B7/15535 ,  H04B7/15578 ,  H04L5/1438 ,  H04W16/26 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307

Abstract: A technology is described for a repeater. A repeater can comprise a first port; a second port; a first-direction amplification and filtering path coupled between the first port and the second port; a multiplexer coupled between: the first-direction amplification and filtering path; and the second port; and a power amplifier (PA) coupled between the first port and the multiplexer. The repeater can further comprise an adjustable matching network coupled between the PA and the multiplexer, wherein the adjustable matching network is actively adjusted to match an impedance of an output of the PA at a selected channel over a frequency range for a first-direction signal with an impedance of an input of the multiplexer over the selected channel over the frequency range for a first-direction signal.

公开(公告)号：US20230344392A1

公开(公告)日：2023-10-26

申请号：US17726653

申请日：2022-04-22

Applicant: Qorvo US, Inc.

Inventor： Baker Scott ,  Padmmasini Desikan ,  George Maxim ,  Mihai Murgulescu

IPC: H03F3/19 ,  H03F1/56 ,  H03G3/30

CPC classification number: H03F3/19 ,  H03F1/565 ,  H03G3/3036 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2200/387 ,  H03G2201/103 ,  H03G2201/307

Abstract: Disclosed is a low noise amplifier system. Included is a main amplifier having a main input coupled to a RF input and a main output connected to an RF output and an impedance amplifier having an impedance input coupled to the RF input and an impedance output coupled to the RF output, wherein the impedance amplifier is configured to provide input impedance matching to the main amplifier. The impedance amplifier also provides a first noise path that passes through the impedance amplifier such that the noise generated by the impedance amplifier is substantially out of phase with the noise that passes through a second noise path that passes through the main amplifier. A neutralization amplifier is configured to reduce parasitic capacitive loading within the first noise path.

公开(公告)号：US11791785B2

公开(公告)日：2023-10-17

申请号：US17128537

申请日：2020-12-21

Applicant: IMEC vzw

Inventor： Khaled Khalaf ,  Steven Brebels

IPC: H03F3/45 ,  H03G3/30

CPC classification number: H03F3/45183 ,  H03G3/3036 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307

Abstract: A sign switching circuitry is disclosed. In one aspect, the sign switching circuitry includes a first and second differential common-source amplifier having common differential input nodes and common differential output nodes configured such that a differential input signal applied at the common differential input nodes is amplified to a differential output signal at the common differential output nodes with a fixed gain by the first amplifier and by the fixed gain with opposite sign by the second amplifier. The sign switching circuitry also includes a switching circuitry configured to activate the first common-source amplifier and deactivate the second common-source amplifier to amplify the differential input signal by the fixed gain, and to activate the second common-source amplifier and deactivate the first common-source amplifier to amplify the differential input signal by the fixed gain with opposite sign.

公开(公告)号：US20230327651A1

公开(公告)日：2023-10-12

申请号：US18203810

申请日：2023-05-31

Applicant: Reach Power, Inc.

Inventor： Asmita Dani ,  Christopher Joseph Davlantes

IPC: H03K3/012 ,  H03F3/19 ,  H02M7/217 ,  H03G3/30

CPC classification number: H03K3/012 ,  H03F3/19 ,  H02M7/217 ,  H03G3/3036 ,  H03G2201/307 ,  H03F2200/451 ,  H03G2201/103

Abstract: A bidirectional RF circuit, preferably including a plurality of terminals, a switch, a transistor, a coupler, and a feedback network. The circuit can optionally include a drain matching network, an input matching network, and/or one or more tuning inputs. In some variations, the circuit can optionally include one or more impedance networks, such as an impedance network used in place of the feedback network; in some such variations, the circuit may not include a coupler, switch, and/or input matching network. A method for circuit operation, preferably including operating in an amplifier mode, operating in a rectifier mode, and/or transitioning between operation modes.

公开(公告)号：US11699978B2

公开(公告)日：2023-07-11

申请号：US17228138

申请日：2021-04-12

Applicant: Qorvo US, Inc.

Inventor： Baker Scott ,  George Maxim ,  Dirk Robert Walter Leipold

IPC: H03F1/07 ,  H03F1/02 ,  H03F3/19 ,  H03G3/30 ,  H03F1/56 ,  H03F1/32

CPC classification number: H03F1/0288 ,  H03F1/32 ,  H03F1/56 ,  H03F3/19 ,  H03G3/3036 ,  H03F2200/102 ,  H03F2200/222 ,  H03F2200/451 ,  H03G2201/307

Abstract: Doherty radio frequency (RF) amplifier circuitry includes an input node, an output node, a main amplifier path, and a peaking amplifier path. The main amplifier path is coupled between the input node and the output node and includes a main amplifier. The peaking amplifier path is coupled in parallel with the main amplifier path between the input node and the output node, and includes a peaking amplifier and a peaking variable gain preamplifier between the input node and the peaking amplifier. The peaking variable gain preamplifier is configured to adjust a current provided to the peaking amplifier.