公开(公告)号：US20090167361A1

公开(公告)日：2009-07-02

申请号：US11968143

申请日：2007-12-31

申请人： Sami Hyvonen

发明人： Sami Hyvonen

IPC分类号： H03K5/1532 ,  H03F3/45

CPC分类号： H03F3/45183 ,  H03F3/19 ,  H03F3/45188 ,  H03F3/4569 ,  H03F2200/451 ,  H03F2203/45424 ,  H03F2203/45466 ,  H03F2203/45596 ,  H03F2203/45691 ,  H03F2203/45701 ,  H03K5/1532

摘要： An amplitude detection circuit using a sinusoidal input signal inputs to produce a digital output (a one or zero) is described. The circuit uses an input field effect transistor (FET) with a gate load coupled to a gate of the input FET. A drain load may be coupled to a drain of the input FET. A source load may be coupled to a source of the input FET. A controllable variable current generator provides a current to the source of the input FET, biasing the source of the input FET to a reference voltage. An input signal conductor may be coupled to the gate of the input FET. Other embodiments are described.

摘要翻译： 描述使用正弦输入信号输入以产生数字输出（一个或零）的振幅检测电路。 该电路使用具有耦合到输入FET的栅极的栅极负载的输入场效应晶体管（FET）。 漏极负载可以耦合到输入FET的漏极。 源负载可以耦合到输入FET的源极。 可控可变电流发生器向输入FET的源极提供电流，将输入FET的源极偏置为参考电压。 输入信号导体可以耦合到输入FET的栅极。 描述其他实施例。

公开(公告)号：US07262659B2

公开(公告)日：2007-08-28

申请号：US11559195

申请日：2006-11-13

申请人： Mario Caresosa ,  Guangming Yin

发明人： Mario Caresosa ,  Guangming Yin

IPC分类号： H03F3/45

CPC分类号： H03F3/4569 ,  H03F3/45197 ,  H03F3/45744 ,  H03F2200/78 ,  H03F2203/45074 ,  H03F2203/45086 ,  H03F2203/45482 ,  H03F2203/45486 ,  H03G1/0088 ,  H03G3/3036 ,  H03G3/3052

摘要： A method and apparatus for adaptively controlling a variable gain amplifier (VGA). The operation of the VGA is separated into a low gain mode and a high gain mode and the mode in which the VGA is currently operating in is adaptively sensed. A threshold voltage is compared to a control voltage of the VGA; if the VGA is currently operating in the low gain mode and the control voltage is higher than the threshold voltage, the VGA is switched from the low gain mode to the high gain mode; and if the VGA is currently operating in the high gain mode and the control voltage is lower than the threshold voltage, the VGA is switched from the high gain mode to the low gain mode.

摘要翻译： 一种用于自适应地控制可变增益放大器（VGA）的方法和装置。 VGA的操作被分为低增益模式和高增益模式，并且自适应地感测VGA当前正在操作的模式。 将门限电压与VGA的控制电压进行比较; 如果VGA当前处于低增益模式并且控制电压高于阈值电压，则VGA从低增益模式切换到高增益模式; 如果VGA当前处于高增益模式并且控制电压低于阈值电压，则VGA从高增益模式切换到低增益模式。

公开(公告)号：US20060028270A1

公开(公告)日：2006-02-09

申请号：US11239927

申请日：2005-09-29

申请人： Mario Caresosa ,  Guangming Yin

发明人： Mario Caresosa ,  Guangming Yin

IPC分类号： H03G3/20

CPC分类号： H03F3/4569 ,  H03F3/45197 ,  H03F3/45744 ,  H03F2200/78 ,  H03F2203/45074 ,  H03F2203/45086 ,  H03F2203/45482 ,  H03F2203/45486 ,  H03G1/0088 ,  H03G3/3036 ,  H03G3/3052

摘要： A method and apparatus for adaptively controlling a variable gain amplifier (VGA). The operation of the VGA is separated into a low gain mode and a high gain mode and the mode in which the VGA is currently operating in is adaptively sensed. A threshold voltage is compared to a control voltage of the VGA; if the VGA is currently operating in the low gain mode and the control voltage is higher than the threshold voltage, the VGA is switched from the low gain mode to the high gain mode; and if the VGA is currently operating in the high gain mode and the control voltage is lower than the threshold voltage, the VGA is switched from the high gain mode to the low gain mode.

公开(公告)号：US20020158686A1

公开(公告)日：2002-10-31

申请号：US10137298

申请日：2002-05-03

申请人： NEC CORPORATION

发明人： Katsuji Kimura

IPC分类号： G06G007/12

CPC分类号： H03F3/45717 ,  G06G7/14 ,  H03F3/45183 ,  H03F3/4565 ,  H03F3/4569 ,  H03F3/45708 ,  H03F3/45739 ,  H03F2203/45456 ,  H03F2203/45484 ,  H03F2203/45566 ,  H03F2203/45612 ,  H03F2203/45702

摘要： A voltage subtractor/adder circuit comprises a differential pair having first and second MOS transistors. Gate electrodes of the first and second MOS transistors form input terminals for receiving an input differential voltage. Drain electrodes of the first and second MOS transistors form output terminals for outputting a subtraction output signal. Source electrodes of the first and second MOS transistors are commonly coupled to form an output terminal for addition output voltage. The sum of currents flowing through the first and second MOS transistors increases in proportion to the square of the input differential voltage. It is also possible to drive the differential pair by a constant current source. A level shifter may be provided for level-shifting the addition output voltage from the commonly coupled source electrodes.

公开(公告)号：US5317279A

公开(公告)日：1994-05-31

申请号：US999316

申请日：1992-12-31

申请人： Seyed R. Zarabadi ,  Mohammed Ismail

发明人： Seyed R. Zarabadi ,  Mohammed Ismail

IPC分类号： H03F1/32 ,  H03F3/45

CPC分类号： H03F1/3211 ,  H03F3/4569

摘要： A voltage to current converter includes three field effect transistors (FETs), the sources of which are electrically connected to define a common source node, and a feedback network. First and second voltage inputs are connected to the gates of the first and second FETs, respectively. First and second current outputs are connected to the drains of the first and second FETs, respectively. The feedback network is connected between the drain of the third FET and the common source node. The feedback network controls and extends linearity by varying the voltage between the common source node and ground in response to changes in the voltage inputs in order to maintain a constant current through the third FET. The floating common source node quickly adjusts and thereby keeps a linear relationship between the input voltages and the output currents. Thus, the feedback network can dynamically bias the converter by permitting the common source node to float with respect to ground.

摘要翻译： 电压 - 电流转换器包括三个场效应晶体管（FET），其源极电连接以定义公共源节点和反馈网络。 第一和第二电压输入分别连接到第一和第二FET的栅极。 第一和第二电流输出分别连接到第一和第二FET的漏极。 反馈网络连接在第三FET的漏极和公共源节点之间。 反馈网络通过响应于电压输入的变化改变公共源节点和地之间的电压来控制和扩展线性，以便保持通过第三FET的恒定电流。 浮动公共源节点快速调整，从而保持输入电压和输出电流之间的线性关系。 因此，反馈网络可以通过允许公共源节点相对于地面浮动来动态地偏置转换器。

公开(公告)号：US07605655B2

公开(公告)日：2009-10-20

申请号：US12129364

申请日：2008-05-29

申请人： Jongsik Kim ,  Sangwon Han ,  Hyunchol Shin

发明人： Jongsik Kim ,  Sangwon Han ,  Hyunchol Shin

IPC分类号： H03F3/45

CPC分类号： H03F3/45188 ,  H03F1/223 ,  H03F1/3205 ,  H03F1/3211 ,  H03F3/195 ,  H03F3/45201 ,  H03F3/45677 ,  H03F3/4569 ,  H03F2200/108 ,  H03F2200/451 ,  H03F2203/45008 ,  H03F2203/45362 ,  H03F2203/45392 ,  H03F2203/45464 ,  H03F2203/45496

摘要： There is provided a highly linear differential amplifying circuit. The highly linear differential amplifying circuit includes: a differential amplifying unit including a main differential amplifying unit having a differential pair of transistors for amplifying a difference of two input signals and an auxiliary amplifying unit connected in parallel with the main differential amplifying unit, wherein second-order derivatives of transconductances of the main differential amplifying unit and the auxiliary differential amplifying unit are properly set to have an offset; and a source degeneration resistor unit including a first source degeneration resistor to a fourth source degeneration resistor. Accordingly, the linearity of the differential amplifying circuit is improved at a wide output power region.

摘要翻译： 提供了高度线性的差分放大电路。 高线性差分放大电路包括：差分放大单元，包括具有用于放大两个输入信号的差的晶体管的差分对的主差分放大单元和与主差分放大单元并联连接的辅助放大单元， 主差分放大单元和辅助差分放大单元的跨导的顺序导数被适当地设置为具有偏移; 以及源极退化电阻器单元，其包括到第四源极退变电阻器的第一源极退变电阻器。 因此，在宽的输出功率区域，差分放大电路的线性度得到改善。

公开(公告)号：US07135926B2

公开(公告)日：2006-11-14

申请号：US11239927

申请日：2005-09-29

申请人： Mario Caresosa ,  Guangming Yin

发明人： Mario Caresosa ,  Guangming Yin

IPC分类号： H03F3/45

CPC分类号： H03F3/4569 ,  H03F3/45197 ,  H03F3/45744 ,  H03F2200/78 ,  H03F2203/45074 ,  H03F2203/45086 ,  H03F2203/45482 ,  H03F2203/45486 ,  H03G1/0088 ,  H03G3/3036 ,  H03G3/3052

摘要： A method and apparatus for adaptively controlling a variable gain amplifier (VGA). The operation of the VGA is separated into a low gain mode and a high gain mode and the mode in which the VGA is currently operating in is adaptively sensed. A threshold voltage is compared to a control voltage of the VGA; if the VGA is currently operating in the low gain mode and the control voltage is higher than the threshold voltage, the VGA is switched from the low gain mode to the high gain mode; and if the VGA is currently operating in the high gain mode and the control voltage is lower than the threshold voltage, the VGA is switched from the high gain mode to the low gain mode.

摘要翻译： 一种用于自适应地控制可变增益放大器（VGA）的方法和装置。 VGA的操作被分为低增益模式和高增益模式，并且自适应地感测VGA当前正在操作的模式。 将门限电压与VGA的控制电压进行比较; 如果VGA当前处于低增益模式并且控制电压高于阈值电压，则VGA从低增益模式切换到高增益模式; 如果VGA当前处于高增益模式并且控制电压低于阈值电压，则VGA从高增益模式切换到低增益模式。

公开(公告)号：US06980053B2

公开(公告)日：2005-12-27

申请号：US10852275

申请日：2004-05-24

申请人： Mario Caresosa ,  Guangming Yin

发明人： Mario Caresosa ,  Guangming Yin

IPC分类号： H03F3/45 ,  H03G1/00 ,  H03G3/30

CPC分类号： H03F3/4569 ,  H03F3/45197 ,  H03F3/45744 ,  H03F2200/78 ,  H03F2203/45074 ,  H03F2203/45086 ,  H03F2203/45482 ,  H03F2203/45486 ,  H03G1/0088 ,  H03G3/3036 ,  H03G3/3052

摘要： A method and apparatus for adaptively controlling a variable gain amplifier (VGA). The operation of the VGA is separated into a low gain mode and a high gain mode and the mode in which the VGA is currently operating in is adaptively sensed. A threshold voltage is compared to a control voltage of the VGA; if the VGA is currently operating in the low gain mode and the control voltage is higher than the threshold voltage, the VGA is switched from the low gain mode to the high gain mode; and if the VGA is currently operating in the high gain mode and the control voltage is lower than the threshold voltage, the VGA is switched from the high gain mode to the low gain mode.

摘要翻译： 一种用于自适应地控制可变增益放大器（VGA）的方法和装置。 VGA的操作被分为低增益模式和高增益模式，并且自适应地感测VGA当前正在操作的模式。 将门限电压与VGA的控制电压进行比较; 如果VGA当前处于低增益模式并且控制电压高于阈值电压，则VGA从低增益模式切换到高增益模式; 如果VGA当前处于高增益模式并且控制电压低于阈值电压，则VGA从高增益模式切换到低增益模式。

公开(公告)号：US20050258900A1

公开(公告)日：2005-11-24

申请号：US10852275

申请日：2004-05-24

申请人： Mario Caresosa ,  Guangming Yin

发明人： Mario Caresosa ,  Guangming Yin

IPC分类号： H03F3/45 ,  H03G1/00 ,  H03G3/30

CPC分类号： H03F3/4569 ,  H03F3/45197 ,  H03F3/45744 ,  H03F2200/78 ,  H03F2203/45074 ,  H03F2203/45086 ,  H03F2203/45482 ,  H03F2203/45486 ,  H03G1/0088 ,  H03G3/3036 ,  H03G3/3052

摘要： A method and apparatus for adaptively controlling a variable gain amplifier (VGA). The operation of the VGA is separated into a low gain mode and a high gain mode and the mode in which the VGA is currently operating in is adaptively sensed. A threshold voltage is compared to a control voltage of the VGA; if the VGA is currently operating in the low gain mode and the control voltage is higher than the threshold voltage, the VGA is switched from the low gain mode to the high gain mode; and if the VGA is currently operating in the high gain mode and the control voltage is lower than the threshold voltage, the VGA is switched from the high gain mode to the low gain mode.

摘要翻译： 一种用于自适应地控制可变增益放大器（VGA）的方法和装置。 VGA的操作被分为低增益模式和高增益模式，并且自适应地感测VGA当前正在操作的模式。 将门限电压与VGA的控制电压进行比较; 如果VGA当前处于低增益模式并且控制电压高于阈值电压，则VGA从低增益模式切换到高增益模式; 如果VGA当前处于高增益模式并且控制电压低于阈值电压，则VGA从高增益模式切换到低增益模式。

公开(公告)号：US06850109B2

公开(公告)日：2005-02-01

申请号：US09940472

申请日：2001-08-29

申请人： Katsuji Kimura

发明人： Katsuji Kimura

IPC分类号： G06G7/14 ,  H03F1/32 ,  H03F3/45 ,  H03G3/10 ,  G06F7/42

CPC分类号： H03F3/45717 ,  G06G7/14 ,  H03F3/45183 ,  H03F3/4565 ,  H03F3/4569 ,  H03F3/45708 ,  H03F3/45739 ,  H03F2203/45456 ,  H03F2203/45484 ,  H03F2203/45566 ,  H03F2203/45612 ,  H03F2203/45702

摘要： A voltage subtractor/adder circuit has a differential pair having first and second MOS transistors. Gate electrodes of the first and second MOS transistors form input terminals for receiving an input differential voltage. Drain electrodes of the first and second MOS transistors form output terminals for outputting a subtraction output signal. Source electrodes of the first and second MOS transistors are commonly coupled to form an output terminal for addition output voltage. The sum of currents flowing through the first and second MOS transistors increases in proportion to the square of the input differential voltage. It is also possible to drive the differential pair by a constant current source. A level shifter may be provided for level-shifting the addition output voltage from the commonly coupled source electrodes.

摘要翻译： 电压减法器/加法器电路具有具有第一和第二MOS晶体管的差分对。 第一和第二MOS晶体管的栅电极形成用于接收输入差分电压的输入端。 第一和第二MOS晶体管的漏极形成用于输出减法输出信号的输出端。 第一和第二MOS晶体管的源电极共同耦合以形成用于加法输出电压的输出端。 流过第一和第二MOS晶体管的电流的总和与输入差分电压的平方成比例地增加。 也可以通过恒定电流源来驱动差分对。 可以提供电平移位器用于对来自共同耦合的源电极的相加输出电压进行电平移位。