公开(公告)号：US08212616B2

公开(公告)日：2012-07-03

申请号：US12979135

申请日：2010-12-27

申请人： Eoin Ohannaidh

发明人： Eoin Ohannaidh

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  G05F3/245 ,  H03F1/26 ,  H03F1/3211 ,  H03F3/45197 ,  H03F3/45632 ,  H03F2200/447 ,  H03F2200/453 ,  H03F2200/456 ,  H03F2203/45244 ,  H03F2203/45286 ,  H03F2203/45468 ,  H03F2203/45484 ,  H03F2203/45508 ,  H03F2203/45702

摘要： The invention concerns a biasing circuit for controlling the current flowing through a differential pair (102, 104) comprising: a first branch comprising a first resistor (306), a first transistor device (308) and a second transistor device (310) coupled in series; a second branch comprising a second resistor (312), a third transistor device (314) and a fourth transistor device (316) coupled in series, a control node of the third transistor device being coupled to a first node (324) between the first resistor and the first transistor device, and a control node of the first transistor device being coupled to a second node (322) between the second resistor and the third transistor device; and an operational amplifier (318) having an output node coupled to control nodes of the second and fourth transistor devices, said output node providing a output signal (Vc) for controlling the current flowing through said differential pair.

摘要翻译： 本发明涉及一种用于控制流过差分对（102,104）的电流的偏置电路，包括：第一分支，包括第一电阻器（306），第一晶体管器件（308）和第二晶体管器件（310） 系列; 第二分支，包括串联耦合的第二电阻器（312），第三晶体管器件（314）和第四晶体管器件（316），所述第三晶体管器件的控制节点耦合到所述第一晶体管 电阻器和第一晶体管器件，并且第一晶体管器件的控制节点耦合到第二电阻器和第三晶体管器件之间的第二节点（322）; 以及具有耦合到第二和第四晶体管器件的控制节点的输出节点的运算放大器（318），所述输出节点提供用于控制流过所述差分对的电流的输出信号（Vc）。

公开(公告)号：US20100171548A1

公开(公告)日：2010-07-08

申请号：US12690793

申请日：2010-01-20

申请人： Eoin Ohannaidh ,  Stéphane Le Tual ,  Loïc Joet

发明人： Eoin Ohannaidh ,  Stéphane Le Tual ,  Loïc Joet

IPC分类号： H03K5/00

CPC分类号： H03H15/02 ,  H03H11/1291

摘要： An analog finite impulse response (AFIR) filter including at least one variable transconductance block having an input for receiving an input voltage and being adapted to sequentially apply each of a plurality of transconductance levels to the input voltage during at least one of a plurality of successive time periods to generate an output current at an output of the variable transconductance block, the at least one variable transconductance block including a plurality of fixed transconductance blocks each receiving the input voltage and capable of being independently activated to supply the output current; and a capacitor coupled to the output of the variable transconductance block to receive the output current and provide an output voltage of the filter.

摘要翻译： 一种模拟有限脉冲响应（AFIR）滤波器，包括至少一个可变跨导块，其具有用于接收输入电压的输入，并且适于在多个连续的至少一个期间顺序地将多个跨导电平中的每一个施加到输入电压 在所述可变跨导块的输出处产生输出电流的所述时间周期，所述至少一个可变跨导块包括多个固定跨导块，每个固定跨导块接收所述输入电压并且能够被独立地激活以提供所述输出电流; 以及耦合到可变跨导块的输出的电容器，以接收输出电流并提供滤波器的输出电压。

公开(公告)号：US20050189987A1

公开(公告)日：2005-09-01

申请号：US11051243

申请日：2005-02-03

申请人： Eoin Ohannaidh

发明人： Eoin Ohannaidh

IPC分类号： H03B1/00 ,  H03H11/12

CPC分类号： H03H11/126

摘要： A biquad notch filter includes a first stage having first and second admittances of a first type connected between an input terminal and the control terminal of a transistor, a first current source connected between a first supply terminal and a first terminal of the transistor, a second current source connected between a second terminal of the transistor and a second supply terminal; a third admittance of a second type connected between the control terminal and the second supply terminal, a fourth admittance of a second type connected between the first admittance and the second terminal; and a second stage having a transconductance, including a fifth admittance of the first type, connected between the control terminal and an output terminal, a sixth admittance of the first type connected between the output terminal and the second supply terminal, and a connection of the first terminal to the output terminal.

摘要翻译： 二值陷波滤波器包括第一级，其具有连接在晶体管的输入端和控制端之间的第一类型的第一和第二导纳，连接在第一电源端和晶体管的第一端之间的第一电流源，第二级 电流源连接在晶体管的第二端子和第二电源端子之间; 连接在所述控制端子和所述第二供电端子之间的第二类型的第三导纳，连接在所述第一导纳和所述第二端子之间的第二类型的第四导纳; 以及第二级，具有连接在控制端子和输出端子之间的包括第一类型的第五导纳的跨导，连接在输出端子和第二电源端子之间的第一类型的第六导纳，以及 第一个端子到输出端子。

公开(公告)号：US20070159240A1

公开(公告)日：2007-07-12

申请号：US11652386

申请日：2007-01-10

申请人： Eoin Ohannaidh

发明人： Eoin Ohannaidh

IPC分类号： H03K5/00

CPC分类号： H03H11/1213 ,  H03H11/1286

摘要： A biquad gain stage, as well as a Variable Gain Amplifier is disclosed. The biquad gain stage comprises a plurality of transistors as well as conductances, and capacitances, as well as current sources. The resulting variable gain amplifier comprising a plurality of biquad gain stage cascaded in series allows to filter large unwanted blockers and to amplify a small wide-band signal. Both the gain and the filtering are distributed along a signal chain comprising a series of low-noise, high-Q biquad gain stages, each with limited current consumption and low component ratios.

摘要翻译： 公开了双增益增益级以及可变增益放大器。 双倍增益级包括多个晶体管以及电导和电容以及电流源。 所产生的可变增益放大器包括串联级联的多个双二进制增益级，可以滤除大量不想要的阻塞器并放大小宽带信号。 增益和滤波都沿着包括一系列低噪声，高Q二级增益级的信号链分布，每个具有有限的电流消耗和低的分量比。

公开(公告)号：US07109786B2

公开(公告)日：2006-09-19

申请号：US11051243

申请日：2005-02-03

申请人： Eoin Ohannaidh

发明人： Eoin Ohannaidh

IPC分类号： H03K5/00

CPC分类号： H03H11/126

摘要： A biquad notch filter includes a first stage having first and second admittances of a first type connected between an input terminal and the control terminal of a transistor, a first current source connected between a first supply terminal and a first terminal of the transistor, a second current source connected between a second terminal of the transistor and a second supply terminal; a third admittance of a second type connected between the control terminal and the second supply terminal, a fourth admittance of a second type connected between the first admittance and the second terminal; and a second stage having a transconductance, including a fifth admittance of the first type, connected between the control terminal and an output terminal, a sixth admittance of the first type connected between the output terminal and the second supply terminal, and a connection of the first terminal to the output terminal.

摘要翻译： 二值陷波滤波器包括第一级，其具有连接在晶体管的输入端和控制端之间的第一类型的第一和第二导纳，连接在第一电源端和晶体管的第一端之间的第一电流源，第二级 电流源连接在晶体管的第二端子和第二电源端子之间; 连接在所述控制端子和所述第二供电端子之间的第二类型的第三导纳，连接在所述第一导纳和所述第二端子之间的第二类型的第四导纳; 以及第二级，具有连接在控制端子和输出端子之间的包括第一类型的第五导纳的跨导，连接在输出端子和第二电源端子之间的第一类型的第六导纳，以及 第一个端子到输出端子。

公开(公告)号：US20110156816A1

公开(公告)日：2011-06-30

申请号：US12979135

申请日：2010-12-27

申请人： Eoin Ohannaidh

发明人： Eoin Ohannaidh

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  G05F3/245 ,  H03F1/26 ,  H03F1/3211 ,  H03F3/45197 ,  H03F3/45632 ,  H03F2200/447 ,  H03F2200/453 ,  H03F2200/456 ,  H03F2203/45244 ,  H03F2203/45286 ,  H03F2203/45468 ,  H03F2203/45484 ,  H03F2203/45508 ,  H03F2203/45702

摘要： The invention concerns a biasing circuit for controlling the current flowing through a differential pair (102, 104) comprising: a first branch comprising a first resistor (306), a first transistor device (308) and a second transistor device (310) coupled in series; a second branch comprising a second resistor (312), a third transistor device (314) and a fourth transistor device (316) coupled in series, a control node of the third transistor device being coupled to a first node (324) between the first resistor and the first transistor device, and a control node of the first transistor device being coupled to a second node (322) between the second resistor and the third transistor device; and an operational amplifier (318) having an output node coupled to control nodes of the second and fourth transistor devices, said output node providing a output signal (Vc) for controlling the current flowing through said differential pair.

摘要翻译： 本发明涉及一种用于控制流过差分对（102,104）的电流的偏置电路，包括：第一分支，包括第一电阻器（306），第一晶体管器件（308）和第二晶体管器件（310） 系列; 第二分支，包括串联耦合的第二电阻器（312），第三晶体管器件（314）和第四晶体管器件（316），所述第三晶体管器件的控制节点耦合到所述第一晶体管 电阻器和第一晶体管器件，并且第一晶体管器件的控制节点耦合到第二电阻器和第三晶体管器件之间的第二节点（322）; 以及具有耦合到第二和第四晶体管器件的控制节点的输出节点的运算放大器（318），所述输出节点提供用于控制流过所述差分对的电流的输出信号（Vc）。

公开(公告)号：US07760014B2

公开(公告)日：2010-07-20

申请号：US11652386

申请日：2007-01-10

申请人： Eoin Ohannaidh

发明人： Eoin Ohannaidh

IPC分类号： H04B1/10

CPC分类号： H03H11/1213 ,  H03H11/1286

摘要： A biquad gain stage, as well as a Variable Gain Amplifier is disclosed. The biquad gain stage comprises a plurality of transistors as well as conductances, and capacitances, as well as current sources. The resulting variable gain amplifier comprising a plurality of biquad gain stage cascaded in series allows to filter large unwanted blockers and to amplify a small wide-band signal. Both the gain and the filtering are distributed along a signal chain comprising a series of low-noise, high-Q biquad gain stages, each with limited current consumption and low component ratios.

摘要翻译： 公开了双增益增益级以及可变增益放大器。 双倍增益级包括多个晶体管以及电导和电容以及电流源。 所产生的可变增益放大器包括串联级联的多个双二进制增益级，可以滤除大量不想要的阻塞器并放大小宽带信号。 增益和滤波都沿着包括一系列低噪声，高Q二级增益级的信号链分布，每个具有有限的电流消耗和低的分量比。

公开(公告)号：US20060186951A1

公开(公告)日：2006-08-24

申请号：US11343937

申请日：2006-01-31

申请人： Eoin Ohannaidh

发明人： Eoin Ohannaidh

IPC分类号： H03K5/00

CPC分类号： H03H11/1213 ,  H03H11/1252 ,  H03H11/1286

摘要： A differential biquad filter includes positive and negative single ended circuits connected between first and second power supply terminals. Each single ended circuit includes a single input terminal; a transistor having a control terminal, and first and second main terminals; a single output terminal corresponding to the control terminal of the transistor; first and second conductances connected between the single input terminal and the control terminal of the transistor; a first capacitance connected between the control terminal of the transistor and the second main terminal of the other single ended circuit; and a second capacitance connected between the node between the first and second conductances on one hand and the second main terminal of the transistor on the other hand. The differential biquad filter also includes a fifth capacitance connected between the second main terminals of each transistor of each single ended circuit.

摘要翻译： 差分双二阶滤波器包括连接在第一和第二电源端子之间的正和负单端电路。 每个单端电路包括单个输入端; 具有控制端子的晶体管，以及第一和第二主端子; 对应于晶体管的控制端子的单个输出端子; 连接在单个输入端子和晶体管的控制端子之间的第一和第二导体; 连接在晶体管的控制端和另一个单端电路的第二主端之间的第一电容; 另一方面连接在第一和第二电导之间的节点与晶体管的第二主端之间的第二电容。 差分双二阶滤波器还包括连接在每个单端电路的每个晶体管的第二主端之间的第五电容。

公开(公告)号：US08369817B2

公开(公告)日：2013-02-05

申请号：US12690793

申请日：2010-01-20

申请人： Eoin Ohannaidh ,  Stéphane Le Tual ,  Loïc Joet

发明人： Eoin Ohannaidh ,  Stéphane Le Tual ,  Loïc Joet

IPC分类号： H04B1/10

CPC分类号： H03H15/02 ,  H03H11/1291

摘要： An analog finite impulse response (AFIR) filter including at least one variable transconductance block having an input for receiving an input voltage and being adapted to sequentially apply each of a plurality of transconductance levels to the input voltage during at least one of a plurality of successive time periods to generate an output current at an output of the variable transconductance block, the at least one variable transconductance block including a plurality of fixed transconductance blocks each receiving the input voltage and capable of being independently activated to supply the output current; and a capacitor coupled to the output of the variable transconductance block to receive the output current and provide an output voltage of the filter.

摘要翻译： 一种模拟有限脉冲响应（AFIR）滤波器，包括至少一个可变跨导块，其具有用于接收输入电压的输入，并且适于在多个连续的至少一个期间顺序地将多个跨导电平中的每一个施加到输入电压 在所述可变跨导块的输出处产生输出电流的所述时间周期，所述至少一个可变跨导块包括多个固定跨导块，每个固定跨导块接收所述输入电压并且能够被独立地激活以提供所述输出电流; 以及耦合到可变跨导块的输出的电容器，以接收输出电流并提供滤波器的输出电压。

公开(公告)号：US20100048145A1

公开(公告)日：2010-02-25

申请号：US12539896

申请日：2009-08-12

申请人： Eoin Ohannaidh ,  Stéphane Le Tual ,  Loïc Joet

发明人： Eoin Ohannaidh ,  Stéphane Le Tual ,  Loïc Joet

IPC分类号： H04B1/38 ,  H04B1/10 ,  H03M3/00

CPC分类号： H03H15/02 ,  H03H11/1291

摘要： An analog finite impulse response filter including at least one variable transconductance block having an input for receiving an input voltage and being adapted to sequentially apply each of a plurality of transconductance levels to the input voltage during at least one of a plurality of successive time periods to generate an output current at an output of the variable transconductance block, the at least one variable transconductance block including a plurality of fixed transconductance blocks each receiving the input voltage and capable of being independently activated to supply the output current; and a capacitor coupled to the output of the variable transconductance block to receive the output current and provide an output voltage of the filter.

摘要翻译： 一种模拟有限脉冲响应滤波器，包括至少一个可变跨导块，其具有用于接收输入电压的输入，并且适于在多个连续时间段中的至少一个期间顺序地将多个跨导电平中的每一个施加到输入电压， 在所述可变跨导块的输出处产生输出电流，所述至少一个可变跨导块包括多个固定跨导块，每个所述多个固定跨导块接收所述输入电压并能够被独立地激活以提供所述输出电流; 以及耦合到可变跨导块的输出的电容器，以接收输出电流并提供滤波器的输出电压。