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1. 发明申请

US20160181989A1 MULTI-MODE POWER AMPLIFIER 审中-公开
公开(公告)号：US20160181989A1
公开(公告)日：2016-06-23
申请号：US14975621
申请日：2015-12-18
申请人： Skyworks Solutions, Inc
发明人： Ying Shi , Jinghang Feng
IPC分类号： H03F1/02 , H03F3/21 , H03F3/19
CPC分类号： H03F3/213 , H03F1/0211 , H03F1/0216 , H03F1/0261 , H03F1/56 , H03F3/19 , H03F3/195 , H03F3/211 , H03F3/245 , H03F2200/12 , H03F2200/129 , H03F2200/222 , H03F2200/267 , H03F2200/387 , H03F2200/408 , H03F2200/451 , H03F2200/456 , H03F2200/474 , H03F2200/54 , H03F2200/541 , H03F2200/555 , H03F2203/21103 , H03F2203/21131 , H04B1/40 , H04W52/0229 , H04W52/028 , H04W88/06 , Y02B70/30 , Y02D70/00 , Y02D70/122 , Y02D70/124 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/164
摘要： A power amplifier module that includes a power amplifier and a controller is presented herein. The power amplifier module may include a set of transistor stages and a plurality of bias circuits. At least one transistor stage from the set of transistor stages may be in electrical communication with a first bias circuit and a second bias circuit from the plurality of bias circuits. The first bias circuit can be configured to apply a first bias voltage to the at least one transistor stage and the second bias circuit can be configured to apply a second bias voltage to the at least one transistor stage. The controller may be configured to activate one of the first bias circuit and the second bias circuit.

2. 发明申请

US20150277470A1 CURRENT MIRROR CIRCUIT AND RECEIVER USING THE SAME 有权
标题翻译：电流反馈电路和接收器
公开(公告)号：US20150277470A1
公开(公告)日：2015-10-01
申请号：US14669063
申请日：2015-03-26
申请人： MegaChips Corporation
发明人： Ryota Yamahana
IPC分类号： G05F3/26 , H04B10/60 , H04B10/079
CPC分类号： G05F3/262 , H03F3/50 , H03F2200/474 , H03F2203/21115 , H03G3/3084 , H04B10/60
摘要： A current mirror circuit that amplifies a reference current generated by a current source at a first magnification to supply a mirror current to a load circuit. The current mirror circuit includes a first transistor and a second transistor that share a power supply, and a drain potential mirror unit that amplifies the reference current at a second magnification to generate a first current, that amplifies a generated first current at a third magnification to generate a second current, and that supplies a predetermined potential determined based on the second current to a drain of the second transistor. The mirror current is supplied from the second transistor to the load circuit based on a potential of a gate of the first transistor determined based on the reference current
摘要翻译：电流镜电路，其以第一倍率放大由电流源产生的参考电流，以将负载电路提供镜电流。电流镜电路包括共享电源的第一晶体管和第二晶体管以及以第二放大率放大参考电流以产生第一电流的漏极电位镜单元，该第一电流将产生的第三电流以第三倍放大到产生第二电流，并且将基于第二电流确定的预定电位提供给第二晶体管的漏极。基于基于参考电流确定的第一晶体管的栅极的电位，从第二晶体管向负载电路提供镜电流

3. 发明申请

US20150260771A1 CIRCUIT AND METHOD FOR SENSING A CAPACITANCE 审中-公开
标题翻译：用于感测电容的电路和方法
公开(公告)号：US20150260771A1
公开(公告)日：2015-09-17
申请号：US14728461
申请日：2015-06-02
申请人： Elan Microelectronics Corporation
发明人： Chun-Chung HUANG , I-Shu LEE , Shih-Yuan HSU , Te-Sheng CHIU
IPC分类号： G01R27/26 , G01R1/30 , H03F3/04
CPC分类号： G01R27/2605 , G01D5/24 , G01R1/30 , G06F3/044 , H03F3/04 , H03F2200/474
摘要： A transconductance amplifier mirror circuit is connected to an electrode for sensing the capacitance of the electrode with reference to ground, or the capacitance between the electrode and another electrode. A voltage level change is produced on the electrode connected to the transconductance amplifier mirror circuit to cause the transconductance amplifier mirror circuit to supply charges to or drain charges from a charge calculation circuit. The charge amount variation is converted to a signal for calculating the sensed capacitance.
摘要翻译：跨导放大器镜电路连接到电极，用于相对于接地或电极与另一电极之间的电容感测电极的电容。在连接到跨导放大器反射镜电路的电极上产生电压电平变化，以使跨导放大器反射镜电路向电荷计算电路提供电荷或从电荷计算电路漏出电荷。电荷量变化被转换为用于计算感测电容的信号。

4. 发明申请

US20100097147A1 GATE BIAS CIRCUIT 有权
标题翻译：门偏差电路
公开(公告)号：US20100097147A1
公开(公告)日：2010-04-22
申请号：US12374715
申请日：2007-05-31
申请人： Tomohisa Hirayama
发明人： Tomohisa Hirayama
IPC分类号： H03F3/04
CPC分类号： H01L27/0207 , H01L27/088 , H03F1/30 , H03F3/213 , H03F2200/453 , H03F2200/474 , H03F2203/30061
摘要： Multiple unit transistors each having the same gate length are arranged in a gate-lengthwise direction to form a group of unit transistors. At least one unit transistor included in the group of unit transistors is used as a part of a gate bias circuit and acts as unit transistor (102) that is used for the bias circuit, and all of or part of the other unit transistors are connected in parallel and used as amplifier (101).
摘要翻译：每个具有相同栅极长度的多个单位晶体管沿栅极长度方向排列以形成一组单位晶体管。包括在单元晶体管组中的至少一个单位晶体管被用作栅极偏置电路的一部分，并且用作用于偏置电路的单位晶体管（102），并且其它单元晶体管的全部或一部分被连接并联并用作放大器（101）。

5. 发明申请

US20090170454A1 CURRENT LIMITING CIRCUIT FOR RF POWER AMPLIFIER 有权
标题翻译：射频功率放大器的电流限制电路
公开(公告)号：US20090170454A1
公开(公告)日：2009-07-02
申请号：US11720321
申请日：2005-11-23
申请人： John J. Hug , Dmitri P. Prikhodko , Adrianus Van Bezooijen
发明人： John J. Hug , Dmitri P. Prikhodko , Adrianus Van Bezooijen
IPC分类号： H01Q11/12
CPC分类号： H03F1/52 , H03F2200/456 , H03F2200/462 , H03F2200/474 , H03F2200/477
摘要： A current limiting circuit, especially for an RF power amplifier (PA) having a power control loop. The circuit is adapted to sense a representation of a bias current fed to a final stage of the PA. The sensed representation of the bias current is compared to a predetermined reference current and a signal is fed back to the power control loop upon the sensed representation of the bias current exceeding the reference current so as to limit output current of the PA. This provides a limitation of a current drawn by the PA which is generally insensitive to supply voltage and temperature variations. Optionally, a second circuit may be added to limit current drawn by the PA. The second circuit comprising a high accuracy VI converter that is adapted to compare a voltage VLIM representing a feed-back voltage of the power control loop and a predetermined reference voltage VBGAP. The circuit is operatively connected to the VI converter so as to reduce the output current lout upon the voltage VLIM representing the feed-back voltage exceeding the predetermined reference voltage VBGAP. Under antenna mismatch conditions both circuits help to limit a supply current drawn by the PA compared to prior art power control loops that are unable to detect and limit a high current draw under mismatch conditions.
摘要翻译：一种限流电路，特别是具有功率控制回路的RF功率放大器（PA）。电路适于感测馈送到PA的最终级的偏置电流的表示。将感测到的偏置电流的表示与预定的参考电流进行比较，并且在检测到的超过参考电流的偏置电流的表示之后将信号反馈到功率控制环路，以便限制PA的输出电流。这提供了对PA的电流的限制，其通常对电源电压和温度变化不敏感。可选地，可以添加第二电路以限制由PA吸取的电流。第二电路包括高精度VI转换器，其适于将表示功率控制回路的反馈电压的电压VLIM与预定参考电压VBGAP进行比较。该电路可操作地连接到VI转换器，以便减少表示超过预定参考电压VBGAP的反馈电压的电压VLIM上的输出电流。在天线不匹配条件下，与现有技术的功率控制回路相比，两个电路有助于限制由PA引起的电源电流，这些功率控制回路在不匹配条件下无法检测和限制高电流消耗。

6. 发明申请

US20090108940A1 Amplifier 有权
标题翻译：放大器
公开(公告)号：US20090108940A1
公开(公告)日：2009-04-30
申请号：US12289520
申请日：2008-10-29
申请人： Hirokazu Ooyabu
发明人： Hirokazu Ooyabu
IPC分类号： H03F1/32
CPC分类号： H03F1/34 , H03F1/26 , H03F1/32 , H03F3/343 , H03F2200/126 , H03F2200/294 , H03F2200/372 , H03F2200/462 , H03F2200/474
摘要： An amplifier comprises an input terminal that inputs an AC voltage signal; an amplifying unit having a transistor for amplifying the input AC voltage signal; a current detecting unit connected internally of said amplifying unit; and a control-current source controlled by said current detecting unit that drives an input stage of the transistor.
摘要翻译：放大器包括：输入端，输入交流电压信号; 放大单元，具有用于放大输入交流电压信号的晶体管; 在所述放大单元内部连接的电流检测单元; 以及由所述电流检测单元控制的控制电流源，其驱动晶体管的输入级。

7. 发明授权

US07479832B2 Differential amplifying system 失效
标题翻译：差分放大系统
公开(公告)号：US07479832B2
公开(公告)日：2009-01-20
申请号：US11672215
申请日：2007-02-07
申请人： Teruo Imayama
发明人： Teruo Imayama
IPC分类号： H03F3/45 , H03G3/20
CPC分类号： H03F3/45475 , H03F1/0266 , H03F1/3211 , H03F3/45098 , H03F2200/456 , H03F2200/462 , H03F2200/474 , H03F2203/45136 , H03F2203/45154 , H03F2203/45156 , H03F2203/45398
摘要： A differential amplifying system has a differential amplifier for amplifying a voltage signal inputted from an input terminal and outputting the amplified voltage signal through an output terminal; an amplitude detection circuit for detecting an amplitude of said voltage signal inputted to said differential amplifier and outputting a detected current corresponding to the amplitude; a compensation circuit having: a current mirror circuit for outputting a compensating current at a desired mirror ratio for an input of said detected current; and a feedback circuit for changing a mirror ratio of said current mirror circuit in order to control a magnitude of the compensating current according to an amplitude of the voltage signal detected by said amplitude detection circuit; and a bias circuit for supplying bias voltage to said differential amplifier in order to add a bias value to inputted said voltage signal based on the magnitude of said compensating current.
摘要翻译：差分放大系统具有差分放大器，用于放大从输入端输入的电压信号，并通过输出端输出放大的电压信号; 振幅检测电路，用于检测输入到所述差分放大器的所述电压信号的幅度，并输出对应于所述振幅的检测电流; 一种补偿电路，具有：电流镜电路，用于以所需的镜像比输出所述检测电流的输入的补偿电流; 以及反馈电路，用于改变所述电流镜电路的镜像比，以便根据由所述幅度检测电路检测的电压信号的幅度来控制补偿电流的幅度; 以及偏置电路，用于向所述差分放大器提供偏置电压，以便基于所述补偿电流的大小向输入的所述电压信号添加偏置值。

8. 发明申请

US20080218261A1 RF Power Amplifier Mirror Circuit for Sensing Current 失效
标题翻译：射频功率放大器镜电路，用于感应电流
公开(公告)号：US20080218261A1
公开(公告)日：2008-09-11
申请号：US11684575
申请日：2007-03-09
申请人： Matthew J. Salove , William H. Davenport , Ray M. Parkhurst , Jin W. Cho
发明人： Matthew J. Salove , William H. Davenport , Ray M. Parkhurst , Jin W. Cho
IPC分类号： H03G3/20
CPC分类号： H03G3/3042 , H03F3/19 , H03F2200/462 , H03F2200/474
摘要： An apparatus and method is disclosed for providing a mirror circuit for detecting a change in current of a RF power amplifier. The mirror circuit includes a voltage operably coupled with the mirror circuit, a bias circuit operably coupled with the mirror circuit, wherein the bias circuit is capable of applying a bias voltage to the mirror circuit, and an output reference signal. The output reference signal is proportional to the change of current in the RF power amplifier.
摘要翻译：公开了一种用于提供用于检测RF功率放大器的电流变化的镜电路的装置和方法。镜电路包括可操作地与镜电路耦合的电压，可操作地与镜电路耦合的偏置电路，其中偏置电路能够向镜电路施加偏置电压，以及输出参考信号。输出参考信号与RF功率放大器中的电流变化成比例。

9. 发明授权

US07359136B1 TMR/GMR amplifier with input current compensation 有权
标题翻译： TMR / GMR放大器，具有输入电流补偿
公开(公告)号：US07359136B1
公开(公告)日：2008-04-15
申请号：US11652184
申请日：2007-01-11
申请人： Thart Fah Voo
发明人： Thart Fah Voo
IPC分类号： G11B5/09 , G11B5/02 , H03F1/36
CPC分类号： G11B5/02 , G11B2005/0018 , H03F1/342 , H03F3/45475 , H03F2200/144 , H03F2200/453 , H03F2200/474 , H03F2203/45136 , H03F2203/45528
摘要： An amplifier system with feedback current cancellation comprises an amplifier, a feedback network, first and second unity-gain buffers, a second resistance, and a current mirror. The amplifier includes an input, an output, and at least one stage. The feedback network includes a first resistance having one end that communicates with the input of the amplifier and an opposite end that communicates with the output of the amplifier. The first and second buffers each include an input and an output. The inputs of the first and second buffers communicate with the output and the input of the amplifier, respectively. The second resistance communicates with the outputs of the first and second buffers. The current mirror provides a current at the input of the amplifier that is proportional to a second current flowing through the second resistance.
摘要翻译：具有反馈电流消除的放大器系统包括放大器，反馈网络，第一和第二单位增益缓冲器，第二电阻和电流镜。放大器包括输入，输出和至少一个级。反馈网络包括具有与放大器的输入通信的一端的第一电阻和与放大器的输出通信的相对端。第一和第二缓冲器包括输入和输出。第一和第二缓冲器的输入分别与放大器的输出和输入通信。第二电阻与第一和第二缓冲器的输出通信。电流镜在放大器的输入处提供与流过第二电阻的第二电流成比例的电流。

10. 发明申请

US20070182488A1 DIFFERENTIAL AMPLIFYING SYSTEM 失效
标题翻译：差分放大系统
公开(公告)号：US20070182488A1
公开(公告)日：2007-08-09
申请号：US11672215
申请日：2007-02-07
申请人： Teruo IMAYAMA
发明人： Teruo IMAYAMA
IPC分类号： H03F3/45
CPC分类号： H03F3/45475 , H03F1/0266 , H03F1/3211 , H03F3/45098 , H03F2200/456 , H03F2200/462 , H03F2200/474 , H03F2203/45136 , H03F2203/45154 , H03F2203/45156 , H03F2203/45398
摘要： A differential amplifying system has a differential amplifier for amplifying a voltage signal inputted from an input terminal and outputting the amplified voltage signal through an output terminal; an amplitude detection circuit for detecting an amplitude of said voltage signal inputted to said differential amplifier and outputting a detected current corresponding to the amplitude; a compensation circuit having: a current mirror circuit for outputting a compensating current at a desired mirror ratio for an input of said detected current; and a feedback circuit for changing a mirror ratio of said current mirror circuit in order to control a magnitude of the compensating current according to an amplitude of the voltage signal detected by said amplitude detection circuit; and a bias circuit for supplying bias voltage to said differential amplifier in order to add a bias value to inputted said voltage signal based on the magnitude of said compensating current.
摘要翻译：差分放大系统具有差分放大器，用于放大从输入端输入的电压信号，并通过输出端输出放大的电压信号; 振幅检测电路，用于检测输入到所述差分放大器的所述电压信号的幅度，并输出对应于所述振幅的检测电流; 一种补偿电路，具有：电流镜电路，用于以所需的镜像比输出所述检测电流的输入的补偿电流; 以及反馈电路，用于改变所述电流镜电路的镜像比，以便根据由所述幅度检测电路检测的电压信号的幅度来控制补偿电流的幅度; 以及偏置电路，用于向所述差分放大器提供偏置电压，以便基于所述补偿电流的大小向输入的所述电压信号添加偏置值。

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