公开(公告)号：US12009564B2

公开(公告)日：2024-06-11

申请号：US17236435

申请日：2021-04-21

Applicant: QUALCOMM INCORPORATED

Inventor： Muhammad Hassan

IPC: H03F3/72 ,  H01P1/18 ,  H03F3/193 ,  H03F3/50 ,  H03G3/30

CPC classification number: H01P1/18 ,  H03F3/193 ,  H03F3/50 ,  H03G3/3042 ,  H03F2200/294 ,  H03F2200/541

Abstract: A phased array element includes a transmit portion having a plurality of amplifier paths, each amplifier path having a driver amplifier and a power amplifier, a first transformer coupled to the power amplifier of a first amplifier path of the plurality of amplifier paths and a second transformer coupled to the power amplifier of a second amplifier path of the plurality of amplifier paths, a secondary winding of each of the first transformer and the second transformer coupled together by a common transformer segment, a transmit phase shifter switchably coupled to the plurality of amplifier paths, a receive portion coupled to the second transformer, the receive portion having a receive path having a low noise amplifier (LNA), and a receive phase shifter coupled to the LNA.

公开(公告)号：US10063199B2

公开(公告)日：2018-08-28

申请号：US15178217

申请日：2016-06-09

Applicant: Analog Devices Global

Inventor： Sean T. Morley

IPC: H03F3/45 ,  H03F3/19 ,  H03F3/193 ,  H03F3/21 ,  H03F1/32

CPC classification number: H03F3/45273 ,  H03F1/3211 ,  H03F3/19 ,  H03F3/193 ,  H03F3/195 ,  H03F3/21 ,  H03F3/3016 ,  H03F3/45071 ,  H03F3/4508 ,  H03F3/45085 ,  H03F3/45174 ,  H03F3/45183 ,  H03F3/50 ,  H03F2200/165 ,  H03F2200/451 ,  H03F2200/456 ,  H03F2200/513 ,  H03F2200/69 ,  H03F2200/72 ,  H03F2200/75 ,  H03F2203/45112 ,  H03F2203/45646

Abstract: Provided herein are amplifiers, such as buffers, with increased headroom. An amplifier stage includes a follower transistor and current source configured to receive a power supply voltage comprising an alternating current component and a direct current component. The alternating current component of the power supply voltage has substantially the same frequency and magnitude as the input signal received by the follower transistor. In radio frequency (RF) and intermediate frequency (IF) buffer applications, for example, the increased headroom can allow for linear buffering of an input signals with increased amplitude so that the output power one decibel (OP1dB) compression point can be increased.

公开(公告)号：US09585593B2

公开(公告)日：2017-03-07

申请号：US13508655

申请日：2010-11-18

Applicant: Chung Shing Fan ,  Joel Ironstone ,  Kenneth Carless Smith

Inventor： Chung Shing Fan ,  Joel Ironstone ,  Kenneth Carless Smith

IPC: A61B5/05 ,  A61B5/053 ,  G01R31/00 ,  G01R27/02 ,  A61B5/00 ,  H03F3/50 ,  H03F3/60 ,  G01R1/30

CPC classification number: A61B5/053 ,  A61B5/0537 ,  A61B5/4869 ,  A61B5/4875 ,  A61B5/4878 ,  A61B5/6843 ,  A61B5/6885 ,  A61B5/7203 ,  G01R1/30 ,  G01R27/02 ,  G01R31/00 ,  H03F3/50 ,  H03F3/602 ,  H03F2200/261

Abstract: Apparatus for electrically connecting measurement apparatus to a biological subject, the apparatus including a signal delivery circuit including a current buffer having a current buffer input for receiving a signal from a signal source and a current buffer output for supplying a current to an electrode attached to the biological subject, and a voltage buffer having a voltage buffer input coupled to the current buffer output and a voltage buffer output for providing a voltage signal indicative of a voltage at the electrode, to a sensor.

Abstract translation: 一种用于将测量装置电连接到生物学对象的装置，该装置包括信号传递电路，该信号传送电路包括具有用于从信号源接收信号的当前缓冲器输入端和用于向连接到 生物学对象，以及具有耦合到当前缓冲器输出的电压缓冲器输入的电压缓冲器和用于将指示电极处的电压的电压信号提供给传感器的电压缓冲器输出。

公开(公告)号：US20160094189A1

公开(公告)日：2016-03-31

申请号：US14867178

申请日：2015-09-28

Applicant: SKYWORKS SOLUTIONS, INC.

Inventor： Aleksey A. LYALIN

IPC: H03F1/30 ,  H03F3/193 ,  H03F3/21

CPC classification number: H03F3/211 ,  H03F1/302 ,  H03F3/191 ,  H03F3/50 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/451 ,  H03F2203/21127 ,  H03F2203/21145 ,  H03F2203/21175 ,  H03F2203/45154 ,  H03F2203/7209 ,  H03F2203/7236

Abstract: Power amplifier bias circuit. A power amplifier bias circuit can include an emitter follower device and an emitter follower mirror device coupled to form a mirror configuration. The emitter follower device can be configured to provide a bias signal for a power amplifier at an output port. The power amplifier bias circuit can include a reference device configured to mirror an amplifying device of the power amplifier. The emitter follower mirror device can be configured to provide a mirror bias signal to the reference device.

Abstract translation: 功率放大器偏置电路。 功率放大器偏置电路可以包括发射极跟随器件和耦合以形成反射镜配置的射极跟随器器件。 射极跟随器件可以被配置为在输出端口处为功率放大器提供偏置信号。 功率放大器偏置电路可以包括被配置为镜像功率放大器的放大装置的参考装置。 射极跟随器装置可以被配置为向参考装置提供镜偏置信号。

公开(公告)号：US09246453B2

公开(公告)日：2016-01-26

申请号：US12678507

申请日：2008-09-15

Applicant: Mohamed Bouhamame ,  Luca Lococo ,  Sebastien Robert

Inventor： Mohamed Bouhamame ,  Luca Lococo ,  Sebastien Robert

IPC: H03K5/00 ,  H03F3/50 ,  H03F1/26 ,  H03F1/32 ,  H03F1/34 ,  H03F1/56 ,  H03F3/195 ,  H03F3/45 ,  H03G5/14 ,  H03H11/12

CPC classification number: H03F3/50 ,  H03F1/26 ,  H03F1/32 ,  H03F1/34 ,  H03F1/56 ,  H03F3/195 ,  H03F3/45475 ,  H03F2200/144 ,  H03F2200/213 ,  H03F2200/378 ,  H03F2200/408 ,  H03F2200/411 ,  H03F2200/435 ,  H03F2200/451 ,  H03F2203/45136 ,  H03F2203/45522 ,  H03F2203/5006 ,  H03F2203/5021 ,  H03F2203/5024 ,  H03F2203/5031 ,  H03F2203/5036 ,  H03F2203/5039 ,  H03G5/14 ,  H03H11/1213 ,  H03H11/1291

Abstract: A tunable RF filter, comprising: an emitter follower stage (2); and a common emitter stage (4); the common emitter stage (4) providing feedback to the emitter follower stage (2). The common emitter stage (4) may comprise a first transistor (Ti) being the only transistor of the common emitter stage (4); and the emitter follower stage (2) may comprise a second transistor (T2) being the only transistor of the emitter follower stage (2). A further tunable RF filter provides improved linearity, comprising: an emitter follower stage (22); a joint common emitter and emitter follower stage (24); and a gain stage (26); a common emitter output of the joint common emitter and emitter follower stage (24) providing feedback to the emitter follower stage (22), and an emitter follower output of the joint common emitter and emitter follower stage (24) providing an input to the gain stage (26).

Abstract translation: 一种可调谐RF滤波器，包括：射极跟随器级（2）; 和共同发射极级（4）; 所述公共发射极级（4）向所述射极跟随器级（2）提供反馈。 公共发射极级（4）可以包括作为公共发射极级（4）的唯一晶体管的第一晶体管（Ti）。 并且射极跟随器级（2）可以包括作为射极跟随器级（2）的唯一晶体管的第二晶体管（T2）。 另一可调谐RF滤波器提供改进的线性度，包括：射极跟随器级（22）; 共同的发射极和射极跟随器级（24）; 和增益阶段（26）; 联合共发射极和射极跟随器级（24）的共发射极输出，为射极跟随器级（22）提供反馈，以及联合公共发射极和射极跟随器级（24）的射极跟随器输出，为增益提供输入 阶段（26）。

公开(公告)号：US07991370B2

公开(公告)日：2011-08-02

申请号：US11973855

申请日：2007-10-10

Applicant: Tadashi Kabashima ,  Shoichi Kuroki ,  Toshio Chikaki

Inventor： Tadashi Kabashima ,  Shoichi Kuroki ,  Toshio Chikaki

IPC: H04B1/18

CPC classification number: H03F3/19 ,  H03F1/34 ,  H03F3/50 ,  H03F2200/144 ,  H03F2200/222 ,  H03F2200/411 ,  H03F2200/451 ,  H03F2203/5018 ,  H03F2203/5024 ,  H03F2203/5031 ,  H04B1/18

Abstract: Disclosed herein is an amplifier circuit formed by multiple transistor stages and having an input terminal for a signal and an inverted output terminal configured to output an inverted signal after amplification, wherein a feedback resistance and a feedback capacitor for input impedance matching are connected in series with each other between the inverted output terminal and the input terminal.

Abstract translation: 本发明公开了一种由多个晶体管级形成的放大器电路，具有用于信号的输入端和被配置为在放大后输出反相信号的反相输出端，其中反馈电阻和用于输入阻抗匹配的反馈电容串联连接 在反相输出端子和输入端子之间相互之间。

公开(公告)号：US07956933B2

公开(公告)日：2011-06-07

申请号：US11515474

申请日：2006-09-05

Applicant: Kohji Ohiwa

Inventor： Kohji Ohiwa

IPC: H04N5/50 ,  H04N5/44

CPC classification number: H04N5/50 ,  H03F3/189 ,  H03F3/50 ,  H03G3/3068 ,  H04N5/4401 ,  H04N21/42607

Abstract: In a tuner circuit, an automatic gain control circuit generates an RF-AGC voltage for automatically controlling a gain of an RF-AGC amplifier in accordance with a level of a signal output from an IF amplifier. An emitter follower circuit includes a transistor for current amplification, and varies a drive current of the transistor in accordance with the RF-AGC voltage. Thus, when an interference signal is at a high level, the drive current of the transistor becomes large. Therefore, distortion performance of the emitter follower circuit is improved. On the other hand, in a normal state where the interference signal is at a low level, the drive current of the transistor fails to become large. Therefore, low power consumption is achieved.

Abstract translation: 在调谐器电路中，自动增益控制电路产生用于根据从IF放大器输出的信号的电平自动控制RF-AGC放大器的增益的RF-AGC电压。 射极跟随器电路包括用于电流放大的晶体管，并根据RF-AGC电压改变晶体管的驱动电流。 因此，当干扰信号处于高电平时，晶体管的驱动电流变大。 因此，射极跟随器电路的失真性能提高。 另一方面，在干扰信号处于低电平的正常状态下，晶体管的驱动电流不能变大。 因此，实现了低功耗。

公开(公告)号：US20110050372A1

公开(公告)日：2011-03-03

申请号：US12940624

申请日：2010-11-05

Applicant: Philip T. Hisayasu ,  Michael D. Womac

Inventor： Philip T. Hisayasu ,  Michael D. Womac

IPC: H03J3/24

CPC classification number: H03H7/12 ,  H03F1/22 ,  H03F3/19 ,  H03F3/50 ,  H03F2200/108 ,  H03F2200/294 ,  H03F2200/411 ,  H03F2200/489 ,  H03F2200/501 ,  H03F2203/5031 ,  H03H7/06 ,  H03H7/1758 ,  H03H11/1213 ,  H03H11/1291 ,  H03J3/20 ,  H03J2200/10

Abstract: A circuit includes a first filter comprising a first inductor coupled to a first variable capacitor, wherein the first filter is associated with a first resonant frequency. The circuit further comprises an amplifier coupled to the first filter and a second filter coupled to the amplifier. The second filter comprises a second inductor coupled to a second variable capacitor, wherein the second filter is associated with a second resonant frequency that is substantially the same as the first resonant frequency. At least a portion of the first filter and at least a portion of the second filter are formed on an integrated circuit.

Abstract translation: 电路包括第一滤波器，其包括耦合到第一可变电容器的第一电感器，其中第一滤波器与第一谐振频率相关联。 电路还包括耦合到第一滤波器的放大器和耦合到放大器的第二滤波器。 第二滤波器包括耦合到第二可变电容器的第二电感器，其中第二滤波器与基本上与第一谐振频率相同的第二谐振频率相关联。 第一滤波器的至少一部分和第二滤波器的至少一部分形成在集成电路上。

公开(公告)号：US20110018633A1

公开(公告)日：2011-01-27

申请号：US12695137

申请日：2010-01-27

Applicant: Yi-Bin Hsieh

Inventor： Yi-Bin Hsieh

IPC: H03F3/45

CPC classification number: H03F3/45188 ,  H03F3/005 ,  H03F3/45179 ,  H03F3/45659 ,  H03F3/50 ,  H03F2203/45212 ,  H03F2203/45418 ,  H03F2203/45512 ,  H03F2203/45521 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45544 ,  H03F2203/45551 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03F2203/45616 ,  H03F2203/45618 ,  H03F2203/45631 ,  H03F2203/45634 ,  H03F2203/45652 ,  H03F2203/45726 ,  H03F2203/45728

Abstract: An operational amplifier includes an input stage for generating a first differential output signal pair according to a first differential input signal pair, an output stage for generating a second differential output signal pair according to at least a second differential input signal pair, and a high-pass filtering circuit coupled between the input stage and the output stage for performing high-pass filtering on the first differential output signal pair, for generating the at least a second differential input signal pair.

Abstract translation: 运算放大器包括：输入级，用于根据第一差分输入信号对产生第一差分输出信号对;根据至少第二差分输入信号对产生第二差分输出信号对的输出级， 耦合在输入级和输出级之间的低通滤波电路，用于对第一差分输出信号对执行高通滤波，以产生至少第二差分输入信号对。

公开(公告)号：US07843272B2

公开(公告)日：2010-11-30

申请号：US12533113

申请日：2009-07-31

Applicant: Kouichiro Yamaguchi

Inventor： Kouichiro Yamaguchi

IPC: H03F3/04

CPC classification number: H03F1/347 ,  H03F1/22 ,  H03F1/26 ,  H03F1/565 ,  H03F3/19 ,  H03F3/4508 ,  H03F3/50 ,  H03F2200/06 ,  H03F2200/09 ,  H03F2200/117 ,  H03F2200/153 ,  H03F2200/294 ,  H03F2200/36 ,  H03F2200/372 ,  H03F2200/451 ,  H03F2200/534 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2203/5009

Abstract: A low noise amplifier having a wide operating frequency band and a high dynamic range is provided. A transformer having a secondary winding connected between an input terminal to which an input signal is applied and a positive differential output terminal, and a primary winding connected between a negative differential output terminal and an input node is provided as a feedback circuit between a cascode amplifier circuit, which includes transistors and a resistor, and an output circuit, which includes a transistor and a constant current source. Selective use of a transformer whose leakage inductance has an adequate value as the feedback transformer can realize a low noise amplifier which has a wide operating frequency band and a high dynamic range.

Abstract translation: 提供具有宽工作频带和高动态范围的低噪声放大器。 具有连接在施加输入信号的输入端子与正差分输出端子之间的次级绕组的变压器和连接在负差分输出端子和输入节点之间的初级绕组被提供为共源共栅放大器之间的反馈电路 电路，其包括晶体管和电阻器，以及包括晶体管和恒流源的输出电路。 漏电感值为反馈变压器的变压器的选择性使用可以实现具有宽工作频带和高动态范围的低噪声放大器。