公开(公告)号：US07250818B2

公开(公告)日：2007-07-31

申请号：US11096938

申请日：2005-04-01

Applicant: Moshe Ben Ayun ,  Ovadia Grossman ,  Shay Nir ,  Mark Rozental

Inventor： Moshe Ben Ayun ,  Ovadia Grossman ,  Shay Nir ,  Mark Rozental

IPC: H03G3/20

CPC classification number: H03G3/004 ,  H03F1/0238 ,  H03G3/3042 ,  H03G2201/40

Abstract: A RFPA (radio frequency power amplifier) circuit (150) which includes a RFPA (101), a supply voltage source (104), means (155) for applying to the RFPA a gain control bias voltage and a feedback control loop (156) for adjusting a voltage applied to the RFPA, the feedback control loop including a sampler (107) for sampling an output of the RFPA, a RF detector (109) for detecting a level of RF power sampled by the sampler, a comparator (115) for comparing an output signal from the RF detector with a reference signal, an integrator (117) for integrating an output signal of the comparator and a voltage regulator (151) having a first input from the integrator and a second input from the supply voltage source and an output connected to the RFPA, the regulator being operable to apply to the RFPA a supply voltage adjusted in response to an input signal from the integrator.

Abstract translation: 包括RFPA（101），电源电压源（104）的RFPA（射频功率放大器）电路（150），用于向RFPA施加增益控制偏置电压的装置（155）和反馈控制回路（156） 用于调整施加到RFPA的电压，所述反馈控制回路包括用于对RFPA的输出进行采样的采样器（107）;用于检测由采样器采样的RF功率电平的RF检测器（109），比较器（115） 用于将来自RF检测器的输出信号与参考信号进行比较，用于对比较器的输出信号进行积分的积分器（117）和具有来自积分器的第一输入的电压调节器（151）和来自电源电压源的第二输入 以及连接到所述RFPA的输出，所述调节器可操作以向所述RFPA施加响应于来自所述积分器的输入信号而调整的电源电压。

公开(公告)号：US20060220739A1

公开(公告)日：2006-10-05

申请号：US11096938

申请日：2005-04-01

Applicant: Moshe Ben-Ayun ,  Ovadia Grossman ,  Shay Nir ,  Mark Rozental

Inventor： Moshe Ben-Ayun ,  Ovadia Grossman ,  Shay Nir ,  Mark Rozental

IPC: H03G3/20

CPC classification number: H03G3/004 ,  H03F1/0238 ,  H03G3/3042 ,  H03G2201/40

Abstract: A RFPA (radio frequency power amplifier) circuit (150) which includes a RFPA (101), a supply voltage source (104), means (155) for applying to the RFPA a gain control bias voltage and a feedback control loop (156) for adjusting a voltage applied to the RFPA, the feedback control loop including a sampler (107) for sampling an output of the RFPA, a RF detector (109) for detecting a level of RF power sampled by the sampler, a comparator (115) for comparing an output signal from the RF detector with a reference signal, an integrator (117) for integrating an output signal of the comparator and a voltage regulator (151) having a first input from the integrator and a second input from the supply voltage source and an output connected to the RFPA, the regulator being operable to apply to the RFPA a supply voltage adjusted in response to an input signal from the integrator.

Abstract translation: 包括RFPA（101），电源电压源（104）的RFPA（射频功率放大器）电路（150），用于向RFPA施加增益控制偏置电压的装置（155）和反馈控制回路（156） 用于调整施加到RFPA的电压，所述反馈控制回路包括用于对RFPA的输出进行采样的采样器（107）;用于检测由采样器采样的RF功率电平的RF检测器（109），比较器（115） 用于将来自RF检测器的输出信号与参考信号进行比较，用于对比较器的输出信号进行积分的积分器（117）和具有来自积分器的第一输入的电压调节器（151）和来自电源电压源的第二输入 以及连接到所述RFPA的输出，所述调节器可操作以向所述RFPA施加响应于来自所述积分器的输入信号而调整的电源电压。

公开(公告)号：US20060066398A1

公开(公告)日：2006-03-30

申请号：US11227109

申请日：2005-09-16

Applicant: Hitoshi Akamine ,  Masahiro Tsuchiya ,  Kyoichi Takahashi ,  Kazuhiro Koshio

Inventor： Hitoshi Akamine ,  Masahiro Tsuchiya ,  Kyoichi Takahashi ,  Kazuhiro Koshio

IPC: H03G3/20

CPC classification number: H03F3/191 ,  H03F1/30 ,  H03F1/32 ,  H03G1/007 ,  H03G3/004 ,  H03G3/3047 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H03G2201/40

Abstract: In a high frequency power amplifier circuit in which bias voltages are applied to the transistors for amplification by current mirroring, this invention enables preventing waveform distortion near the peak output power level by allowing sufficient idle currents to flow through the transistors for amplification, while enhancing the power efficiency in a low output power region. The power amplifier includes a detection circuit comprising a transistor for detection which receives the AC component of an input signal to the last-stage transistor for amplification at its control terminal, a current mirror circuit which mirrors current flowing through that transistor, and a current-voltage conversion means which converts current flowing in the slave side of the current mirror circuit into a voltage. In the detection circuit, a voltage from a bias circuit for generating the bias voltages for the transistors for amplification is applied to the control terminal of the transistor for detection and output of the detection circuit is applied to the control terminal of the last-stage transistor for amplification.

Abstract translation: 在通过电流镜像将偏置电压施加到晶体管以进行放大的高频功率放大器电路中，本发明能够通过允许足够的空闲电流流过晶体管进行放大，从而防止峰值输出功率电平附近的波形失真，同时增强 低输出功率区域的功率效率。 功率放大器包括检测电路，该检测电路包括用于检测的晶体管，其将用于在其控制端子处放大的最后级晶体管的输入信号的AC分量接收;反射电流流过该晶体管的电流镜电路， 电压转换装置，其将在电流镜电路的从侧中流动的电流转换成电压。 在检测电路中，用于产生用于放大的晶体管的偏置电压的偏置电路的电压被施加到用于检测的晶体管的控制端，并且检测电路的输出被施加到最后级晶体管的控制端 用于扩增。

公开(公告)号：US20020159503A1

公开(公告)日：2002-10-31

申请号：US09811082

申请日：2001-03-16

Applicant: Conexant Systems, Inc.

Inventor： Balasubramanian Ramachandran

IPC: H04B001/69

CPC classification number: H04W52/267 ,  H03G3/004 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/307 ,  H03G2201/40 ,  H03G2201/508 ,  H04B1/109 ,  H04L1/0001 ,  H04W52/08 ,  H04W52/38

Abstract: A dynamically varying linearity system nullDVLSnull capable of varying the linearity of a radio frequency (RF) front-end of a communication device responsive to receiving a condition signal indicating a desired mode of operation of a transmitter. The DVLS may include a condition signal indicative of the desired mode of operation and a controller that adjusts the linearity of the transmitter responsive to the condition signal. The condition signal may be responsive to a user interface. The controller, responsive to the condition signal, may dynamically adjust the operating current of the transmitter.

Abstract translation: 一种动态变化的线性系统“DVLS”，其能够响应于接收到指示发射机的所需操作模式的条件信号而改变通信设备的射频（RF）前端的线性度。 DVLS可以包括指示期望的操作模式的条件信号和响应于条件信号来调整发射机的线性度的控制器。 条件信号可以响应于用户界面。 控制器响应于条件信号，可以动态地调整发射机的工作电流。

公开(公告)号：JP6307980B2

公开(公告)日：2018-04-11

申请号：JP2014072599

申请日：2014-03-31

Applicant: 株式会社ソシオネクスト

Inventor： 荒井 知之

IPC: H03G3/10

CPC classification number: H03G1/0029 ,  H03F3/45197 ,  H03F2203/45494 ,  H03F2203/45496 ,  H03F2203/45504 ,  H03F2203/45702 ,  H03G1/0088 ,  H03G3/001 ,  H03G2201/40

公开(公告)号：JP2006094076A

公开(公告)日：2006-04-06

申请号：JP2004276261

申请日：2004-09-24

Applicant: Renesas Technology Corp ,  株式会社ルネサステクノロジ

Inventor： AKAMINE HITOSHI ,  TSUCHIYA MASAHIRO ,  TAKAHASHI KYOICHI ,  KOSHIO KAZUHIRO

IPC: H03F3/193 ,  H03F3/195 ,  H03F3/24 ,  H04B1/04

CPC classification number: H03F3/191 ,  H03F1/30 ,  H03F1/32 ,  H03G1/007 ,  H03G3/004 ,  H03G3/3047 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H03G2201/40

Abstract: PROBLEM TO BE SOLVED: To enable preventing distortion of a waveform by applying a sufficient idle current to a transistor for amplification in the vicinity of the maximum level of an output power, and to enable improving power efficiency in a region where the output power is low, in a high-frequency power amplifier circuit for giving a bias to the transistor for amplification by a current mirror system.
SOLUTION: A detection circuit (240) is provided which consists of a detection transistor (Q1) having a control terminal receiving the AC component of the input signal of the amplification transistor (213) of the final stage, current mirror circuits (Q2, Q3) for transferring a current flowing to the transistor, and a current-voltage converting means (Q4) for converting a current of the transfer side of the current mirror circuits into a voltage. A voltage from a bias circuit (230) for generating the bias voltage of the amplification transistor is applied to the control terminal of the detection transistor of the detection circuit, and the output of the detection circuit is applied to the control terminal of the amplification transistor of the final stage.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 解决的问题：为了通过在输出功率的最大电平附近对用于放大的晶体管施加足够的空闲电流来防止波形失真，并且能够提高输出的区域中的功率效率 功率较低，在用于通过电流镜系统给晶体管施加放大的偏置的高频功率放大器电路中。 解决方案：提供一种检测电路（240），其包括检测晶体管（Q1），该检测晶体管（Q1）具有接收最终级放大晶体管（213）的输入信号的AC分量的控制端，电流镜电路 Q2，Q3），以及用于将电流镜电路的转印侧的电流转换为电压的电流 - 电压转换装置（Q4）。 来自用于产生放大晶体管的偏置电压的偏置电路（230）的电压被施加到检测电路的检测晶体管的控制端，并且检测电路的输出被施加到放大晶体管的控制端 的最后阶段。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：KR101783459B1

公开(公告)日：2017-10-24

申请号：KR1020160046406

申请日：2016-04-15

Applicant: (주)에프씨아이

Inventor： 정성헌

IPC: H04B1/16 ,  H04B1/30 ,  H04B1/62

CPC classification number: H03G3/3052 ,  H03F3/19 ,  H03F3/45475 ,  H03F3/45973 ,  H03F2200/294 ,  H03F2203/45521 ,  H03G3/001 ,  H03G3/3068 ,  H03G2201/202 ,  H03G2201/40

Abstract: 본실시예는 DC 오프셋제거회로를개시한다. 본실시예에따른 DC 오프셋제거회로는 DCFB 대역(DC Feedback Bandwidth)을가변하는 DC 피드백부를구비하고, DC 드룹에러를저감하기위하여고대역에서중대역또는중대역에서저대역으로변환할때, 지연시간(Delay Time)을두어안정적으로 DC 오프셋을제거한다.

Abstract translation: 该实施例公开了一种DC偏移消除电路。 直流偏移在带或从高频段的频带的顺序，包括一个DC反馈的变化根据该实施例去除电路被转换到低频带落入DCFB带（DC反馈带宽），并减少DC下垂误差，延迟 （延迟时间），以稳定地消除直流偏移。

公开(公告)号：US20180294779A1

公开(公告)日：2018-10-11

申请号：US15897049

申请日：2018-02-14

Applicant: Skyworks Solutions, Inc.

Inventor： Wade C. Allen

IPC: H03F3/19 ,  H03F1/02 ,  H03G3/30

CPC classification number: H03F3/19 ,  H03F1/0266 ,  H03F2200/18 ,  H03F2200/27 ,  H03F2200/411 ,  H03F2200/451 ,  H03F2200/516 ,  H03G1/0017 ,  H03G3/30 ,  H03G2201/40

Abstract: In a preferred embodiment, the gain expansion in low power mode of a single chain PA is minimized by dynamically adjusting the output impedance of the bias circuit of each gain stage for each mode of operation. Instead of switching in a series attenuator or switching in additional feedback in the first gain stage of a single-chain PA to limit the gain at the increased quiescent current level, this embodiment achieves linear performance by adjusting the quiescent current in each stage to the minimum level that meets the target gain and then increasing the output resistance of the bias circuit of each gain stage in low power mode (LPM) to provide the appropriate level of negative feedback at the base of each amplifying HBT to linearize the gain versus power response.

公开(公告)号：US20170294889A1

公开(公告)日：2017-10-12

申请号：US15480097

申请日：2017-04-05

Applicant: NXP USA, Inc.

Inventor： Cristian Pavao-Moreira ,  Rex Kenton Hales

IPC: H03G3/30 ,  H03F3/45 ,  H03F3/72 ,  H03F3/19

CPC classification number: H03G3/3036 ,  G01S13/0209 ,  H03F3/19 ,  H03F3/45094 ,  H03F3/72 ,  H03F2200/384 ,  H03F2200/411 ,  H03F2200/456 ,  H03F2200/69 ,  H03F2203/45061 ,  H03F2203/45081 ,  H03F2203/45112 ,  H03F2203/7221 ,  H03G3/3052 ,  H03G2201/302 ,  H03G2201/40 ,  H03K19/018585

Abstract: A device includes a variable gain amplifier, a voltage shifter, a variable gain amplifier half replica module, and an analog to digital converter. The variable gain amplifier includes an input terminal to receive an input signal, an output terminal to provide a first output signal that is biased based on a first common-mode voltage reference. The voltage shifter circuit includes first and second input terminals, and an output terminal to provide, to the analog to digital converter, a third output signal that is biased based on a second common-mode voltage reference. The variable gain amplifier half replica module includes an output terminal coupled to the second input terminal of the voltage shifter circuit, the variable gain amplifier half replica module to control the third output signal of the voltage shifter circuit based on the first common-mode voltage reference and the second common-mode voltage reference.

公开(公告)号：US20160302004A1

公开(公告)日：2016-10-13

申请号：US15094040

申请日：2016-04-08

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Glenn N. DICKINS ,  Gopal ERINJIPPURATH ,  Gary SPITTLE

IPC: H04R3/00 ,  H04R1/24 ,  H04R1/08

CPC classification number: H04R3/00 ,  G06F13/10 ,  G09G2360/06 ,  H03G2201/40 ,  H04M1/05 ,  H04M1/6066 ,  H04R1/08 ,  H04R1/1041 ,  H04R1/24 ,  H04R3/12 ,  H04R5/033 ,  H04R2227/003 ,  H04R2420/01 ,  H04R2420/07

Abstract: An audio apparatus is configured to switch, when there exists a first audio interface between the audio apparatus and a computer apparatus, to using a second audio interface between the audio apparatus and the computer apparatus, the second audio interface being different from the first audio interface. The switching comprises: receiving, via the first audio interface, combined audio data and non-audio data, the non-audio data comprising a request to switch to using the second audio interface; obtaining the request from the data; and, in response to obtaining the request, transmitting to the computer apparatus a confirmation of switching to using the second audio interface. The audio apparatus and the computer apparatus are described and claimed.

Abstract translation: 音频装置被配置为当音频装置和计算机装置之间存在第一音频接口时，在音频装置和计算机装置之间使用第二音频接口，第二音频接口不同于第一音频接口 。 切换包括：通过第一音频接口接收组合的音频数据和非音频数据，非音频数据包括切换到使用第二音频接口的请求; 从数据获取请求; 并且响应于获得所述请求，向所述计算机设备发送切换到使用所述第二音频接口的确认。 音频设备和计算机设备被描述和要求保护。