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    RADIO FREQUENCY LOW NOISE AMPLIFIER WITH AUTOMATIC GAIN CONTROL
    1.
    发明授权
    RADIO FREQUENCY LOW NOISE AMPLIFIER WITH AUTOMATIC GAIN CONTROL 有权
    具有自动增益控制低噪声高频放大器

    公开(公告)号：EP1719243B1

    公开(公告)日：2009-10-07

    申请号：EP05712201.2

    申请日：2005-02-02

    申请人： Silicon Laboratories, Inc.

    发明人： KRONE, Andrew W.

    IPC分类号： H03D7/14 ,  H03G1/00

    CPC分类号： H03G1/0023 ,  H03F1/26 ,  H03F3/193 ,  H03F3/45179 ,  H03F2200/06 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45024 ,  H03F2203/45464 ,  H03F2203/45638 ,  H03G1/0035 ,  H03G7/001

    摘要： A low noise amplifier (500) includes a first transconductance device (326) having a control electrode for receiving a first input signal, and a first current electrode; a first load device (322) having a first terminal coupled to a first power supply voltage terminal and a second terminal coupled to the first current electrode of the first transconductance device (326) and forming a first output voltage signal; a second transconductance device (336) having a control electrode for receiving a second input signal, and a second current electrode; a second load device (332) having a first terminal coupled to the first power supply voltage terminal and a second terminal coupled to the first current electrode of the second transconductance device (336) and forming a second output voltage signal; and an attenuation device (340) coupled between the first current electrodes of the first (326) and second (336) transconductance devices and having a control input terminal for receiving a control voltage thereon.

    RADIO FREQUENCY LOW NOISE AMPLIFIER WITH AUTOMATIC GAIN CONTROL
    2.
    发明公开
    RADIO FREQUENCY LOW NOISE AMPLIFIER WITH AUTOMATIC GAIN CONTROL 有权
    具有自动增益控制低噪声高频放大器

    公开(公告)号：EP1719243A2

    公开(公告)日：2006-11-08

    申请号：EP05712201.2

    申请日：2005-02-02

    申请人： Silicon Laboratories, Inc.

    发明人： KRONE, Andrew W.

    IPC分类号： H03D7/14 ,  H03G1/00

    CPC分类号： H03G1/0023 ,  H03F1/26 ,  H03F3/193 ,  H03F3/45179 ,  H03F2200/06 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45024 ,  H03F2203/45464 ,  H03F2203/45638 ,  H03G1/0035 ,  H03G7/001

    摘要： A low noise amplifier (500) includes a first transconductance device (326) having a control electrode for receiving a first input signal, and a first current electrode; a first load device (322) having a first terminal coupled to a first power supply voltage terminal and a second terminal coupled to the first current electrode of the first transconductance device (326) and forming a first output voltage signal; a second transconductance device (336) having a control electrode for receiving a second input signal, and a second current electrode; a second load device (332) having a first terminal coupled to the first power supply voltage terminal and a second terminal coupled to the first current electrode of the second transconductance device (336) and forming a second output voltage signal; and an attenuation device (340) coupled between the first current electrodes of the first (326) and second (336) transconductance devices and having a control input terminal for receiving a control voltage thereon.

    High gain differential amplifier capable of reducing offset voltage
    7.
    发明公开
    High gain differential amplifier capable of reducing offset voltage 失效
    Differentialzverstärkermit hoherVerstärkung，fähigzur Offset-Gleichspannungsverminderung。

    公开(公告)号：EP0630102A2

    公开(公告)日：1994-12-21

    申请号：EP94304269.7

    申请日：1994-06-14

    申请人： NEC CORPORATION

    发明人： Sone, Kazuya, c/o NEC CORPORATION

    IPC分类号： H03F3/45

    CPC分类号： H03F3/45179 ,  H03F3/45085 ,  H03F3/45089 ,  H03F3/45183 ,  H03F2203/45024 ,  H03F2203/45224 ,  H03F2203/45244 ,  H03F2203/45471 ,  H03F2203/45732

    摘要： A high gain differential amplifier including a differential transistor pair (M₁, M₂) having first and second transistors (M₁, M₂) whose gates are connected to first and second input terminals (t₁, t₂); a current mirror circuit wherein the drain of the transistor (M₁) is connected to an output terminal; a transistor (M₅) whose gate and drain are connected to the drain of transistor (M₁) and output terminal of the current mirror circuit, and to the output terminal (t₃) and the drain of transistor (M₂), respectively; a transistor (M₆) whose drain and gate are connected to an input terminal of the current mirror circuit, and to a bias power supply terminal, respectively; and constant-current source (I₁, I₂) which are connected to the common sources of differential transistor pair (M₁, M₂) and a source of the transistor (M₆), respectively. The addition of the sixth transistor (M₆) permits a voltage between the drain and source of the third and fourth transistors (M₃, M₄) to be nearly equal. As a result, a drain current ratio between the third and fourth transistors (M₃, M₄) can be precisely determined and thus an input offset voltage can be reduced to nearly zero.

    摘要翻译： 一种高增益差分放大器，包括具有栅极连接到第一和第二输入端（t1，t2）的第一和第二晶体管（M1，M2）的差分晶体管对（M1，M2）; 电流镜电路，其中晶体管（M1）的漏极连接到输出端; 晶体管（M5）的栅极和漏极分别连接到晶体管（M1）的漏极和电流镜像电路的输出端，并分别连接到晶体管（M2）的输出端子（t3）和漏极; 分别将漏极和栅极连接到电流镜电路的输入端子的晶体管（M6）和偏置电源端子; 和连接到差分晶体管对（M1，M2）的公共源和晶体管（M6）的源极的恒流源（I1，I2）。 第六晶体管（M6）的添加允许第三和第四晶体管（M3，M4）的漏极和源极之间的电压几乎相等。 结果，可以精确地确定第三和第四晶体管（M3，M4）之间的漏极电流比，因此输入偏移电压可以降低到几乎为零。

    Amplificateur différentiel notamment du type à cascode
    8.
    发明公开
    Amplificateur différentiel notamment du type à cascode 失效
    差分放大器包括共源共栅型

    公开(公告)号：EP0511707A1

    公开(公告)日：1992-11-04

    申请号：EP92201133.3

    申请日：1992-04-22

    申请人： PHILIPS COMPOSANTS ET SEMICONDUCTEURS ,  Philips Electronics N.V.

    发明人： Barbu, Stéphane

    IPC分类号： H03F1/32 ,  H03F3/45

    CPC分类号： H03F3/4521 ,  H03F1/3211 ,  H03F3/45089 ,  H03F2200/516 ,  H03F2203/45024 ,  H03F2203/45026 ,  H03F2203/45202 ,  H03F2203/45352 ,  H03F2203/45371 ,  H03F2203/45374 ,  H03F2203/45702

    摘要： Amplificateur comportant une première et une deuxième paires différentielles de transistors d'entrée (T₁, T₂), (T₃, T₄), les bases des transistors homologues de chaque paire étant connectées entre elles et au moins une partie du courant collecteur des transistors de la deuxième paire (T₃, T₄) est utilisée en sommation (algébrique) avec le courant collecteur des transistors de la première paire (T₁, T₂) pour augmenter la linéarité du signal de sortie (V₅ - V₆) de l'amplificateur.
    L'amplificateur comporte en outre une paire de transistors cascode (T₅, T₆), connectés en tant que charge collecteur des transistors de la première paire de transistors (T₁, T₂) tandis que la sommation précitée est réalisée au moyen de ponts résistifs (R₃, R₅), (R₄, R₆) connectés à partir d'une tension d'alimentation V'cc vers chacun des collecteurs des transistors de la première paire (T₁, T₂) tandis que le point intermédiaire (U, V) de ces ponts résistifs est connecté respectivement au collecteur des transistors de la deuxième paire (T₃, T₄).
    Amplificateurs à plage de linéarité étendue du signal de sortie.

    摘要翻译： 放大器具有输入晶体管（T 1，T 2）（T 3，T 4）的第一和第二差分对，每对的同源晶体管的基极被连接在一起，并至少的晶体管的集电极电流的一部分 放大器的 - （V 6 V 5）第二对（T 3，T 4）在求和（代数）与所述第一对（T1，T2）的晶体管的集电极电流增加输出信号的线性度使用。 该放大器还包括一对连接的第一对晶体管（T1，T2）的所述晶体管的电荷收集器级联晶体管（T 5，T 6），而上述的求和由电阻电桥来进行（R 3 ，R 5），（R 4，R 6）从电源电压V'cc到每个第一对（T1，T2）的晶体管的集电极的连接，而中间点（U，V）这些桥梁 电阻分别连接到第二对（T 3，T 4）的晶体管的集电极。 放大器具有扩展的输出信号线性范围。

    AMPLIFIER
    10.
    发明公开
    AMPLIFIER 审中-公开
    放大器

    公开(公告)号：EP3203631A1

    公开(公告)日：2017-08-09

    申请号：EP17154161.8

    申请日：2017-02-01

    申请人： Fujitsu Limited

    发明人： Shimura, Toshihiro

    IPC分类号： H03F1/32 ,  H03F3/24 ,  H03F3/45

    CPC分类号： H03F1/0233 ,  H03F1/3211 ,  H03F3/193 ,  H03F3/245 ,  H03F3/45179 ,  H03F3/45188 ,  H03F2200/451 ,  H03F2203/45024 ,  H03F2203/45116 ,  H03F2203/45332

    摘要： An amplifier including a first cascode circuit including a first transistor and a second transistor whose source or emitter is coupled to a drain or a collector of the first transistor, a second cascode circuit being a differential pair with the first cascode circuit, the second cascode circuit including a third transistor whose source or emitter is coupled to a source or an emitter of the first transistor and a fourth transistor whose source or emitter is coupled to a drain or collector of the third transistor, a first feedback path that couples between an output terminal of the third transistor and an input terminal of the first transistor, the first feedback path including a first capacitative element, and a second feedback path that couples between an output terminal of the first transistor and an input terminal of the third transistor, the second feedback path including a second capacitative element.

    摘要翻译： 一种放大器，其包括：第一共源共栅电路，其包括第一晶体管和第二晶体管，其源极或发射极耦合到第一晶体管的漏极或集电极;第二共源共栅电路，其与第一共源共栅电路为差分对; 包括其源极或发射极耦合到第一晶体管的源极或发射极的第三晶体管和其源极或发射极耦合到第三晶体管的漏极或集电极的第四晶体管，第一反馈路径耦合在输出端子 所述第一反馈路径包括第一电容性元件，以及第二反馈路径，所述第二反馈路径耦合在所述第一晶体管的输出端子和所述第三晶体管的输入端子之间，所述第二反馈 包括第二电容性元件。