Semiconductor integrated circuit device with variable gain amplifier
    1.
    发明授权
    Semiconductor integrated circuit device with variable gain amplifier 有权
    具有可变增益放大器的半导体集成电路器件

    公开(公告)号:US06727771B2

    公开(公告)日:2004-04-27

    申请号:US09972152

    申请日:2001-10-09

    IPC分类号: H03C300

    CPC分类号: H03C3/40

    摘要: A semiconductor integrated circuit device includes an orthogonal modulator that maintains carrier leak characteristics regardless of attenuation of an output signal level. The orthogonal modulator includes a phase shifter circuit and generates a modulation signal. An auto gain controller amplifies the modulation signal to generate an amplified modulation signal. A gain adjusting circuit adjusts a gain of the phase shifter circuit in accordance with a control signal.

    摘要翻译: 半导体集成电路器件包括正交调制器,其保持载波泄漏特性,而与输出信号电平的衰减无关。 正交调制器包括移相器电路并产生调制信号。 自动增益控制器放大调制信号以产生放大的调制信号。 增益调整电路根据控制信号调整移相器电路的增益。

    Phase shifter circuit
    2.
    发明授权
    Phase shifter circuit 有权
    移相器电路

    公开(公告)号:US06903591B2

    公开(公告)日:2005-06-07

    申请号:US10201739

    申请日:2002-07-24

    CPC分类号: H03H11/18

    摘要: A phase shift circuit that generates a phase shift signal whose amplitude matches at a plurality of frequencies without increasing the circuit area. The phase shifter circuit includes first and second differential amplifiers which generate first and second first phase shift signals having a first amplitude at a first frequency. A third differential amplifier is connected in parallel to the first differential amplifier. The third differential amplifier generates a third phase shift signal having substantially the same amplitude as the first amplitude at a second frequency. The first differential amplifier is activated in accordance with the first frequency and the third differential amplifier is activated in accordance with the second frequency.

    摘要翻译: 一种相移电路,其产生在多个频率下振幅匹配而不增加电路面积的相移信号。 移相器电路包括产生具有第一频率的第一幅度的第一和第二第一相移信号的第一和第二差分放大器。 第三差分放大器与第一差分放大器并联连接。 第三差分放大器产生具有与第二频率具有与第一幅度基本相同的幅度的第三相移信号。 第一差分放大器根据第一频率被激活,并且第三差分放大器根据第二频率被激活。

    Phase shifter circuit
    3.
    发明授权

    公开(公告)号:US06452434B1

    公开(公告)日:2002-09-17

    申请号:US09668381

    申请日:2000-09-25

    IPC分类号: H03H1116

    CPC分类号: H03H11/18

    摘要: A phase shift circuit that generates a phase shift signal whose amplitude matches at a plurality of frequencies without increasing the circuit area. The phase shifter circuit includes first and second differential amplifiers which generate first and second first phase shift signals having a first amplitude at a first frequency. A third differential amplifier is connected in parallel to the first differential amplifier. The third differential amplifier generates a third phase shift signal having substantially the same amplitude as the first amplitude at a second frequency. The first differential amplifier is activated in accordance with the first frequency and the third differential amplifier is activated in accordance with the second frequency.

    ECL-to-CMOS signal level converter
    4.
    发明授权
    ECL-to-CMOS signal level converter 失效
    ECL至CMOS信号电平转换器

    公开(公告)号:US5528171A

    公开(公告)日:1996-06-18

    申请号:US307466

    申请日:1994-09-19

    IPC分类号: H03K19/0175 H03K19/08

    CPC分类号: H03K19/017527

    摘要: A signal level converter is disclosed, for converting a signal having a first logic voltage swing characteristic to a signal having a second voltage swing characteristic. The converter comprises a level converting section and a differential circuit coupled thereto. The level converting section converts the supplied signal at the first logic voltage swing to an intermediate signal at a logic voltage swing different from the first voltage swing. The differential circuit 3, being supplied with the intermediate signal, produces an output signal at the second voltage swing level that corresponds to the potential difference between a high and low potential power supplies.

    摘要翻译: 公开了一种用于将具有第一逻辑电压摆动特性的信号转换为具有第二电压摆动特性的信号的信号电平转换器。 该转换器包括电平转换部分和与其耦合的差分电路。 电平转换部分将以第一逻辑电压摆幅提供的信号转换为不同于第一电压摆幅的逻辑电压摆幅的中间信号。 被提供有中间信号的差分电路3产生与第二电压摆幅电平相对应的高电位和低电位电位之间的电位差的输出信号。

    Capacitance difference detecting circuit and MEMS sensor
    5.
    发明授权
    Capacitance difference detecting circuit and MEMS sensor 有权
    电容差分检测电路和MEMS传感器

    公开(公告)号:US07119550B2

    公开(公告)日:2006-10-10

    申请号:US10942127

    申请日:2004-09-16

    IPC分类号: G01R27/26 G01P9/04

    摘要: Oscillators have capacitors, respectively, whose capacitances change according to an external force and generate first oscillating signals according to the capacitances. Each of the capacitors is disposed, for example, between a substrate and a mass body that is movably disposed to face the substrate and oscillates in a direction perpendicular to the substrate. A detecting unit detects a relative difference between the capacitances of the capacitors as a difference between frequencies of the first oscillating signals. An angular speed or acceleration applied in a horizontal direction of the substrate is calculated according to the frequency change detected by the detecting unit. Therefore, a capacitance difference detecting circuit and a MEMS sensor that detect a minute change in the capacitances of the two capacitors caused by the external force are formed.

    摘要翻译: 振荡器分别具有电容器,其电容根据外力而变化,并根据电容产生第一振荡信号。 每个电容器例如设置在基板和可移动地设置成面对基板并在垂直于基板的方向上振荡的质量体之间。 检测单元检测作为第一振荡信号的频率之间的差异的电容器的电容之间的相对差。 根据由检测单元检测到的频率变化来计算在基板的水平方向上施加的角速度或加速度。 因此,形成检测由外力引起的两个电容器的电容的微小变化的电容差检测电路和MEMS传感器。

    Variable capacity circuit and control method of variable capacity circuit
    6.
    发明申请
    Variable capacity circuit and control method of variable capacity circuit 有权
    可变容量电路和可变容量电路的控制方法

    公开(公告)号:US20060220755A1

    公开(公告)日:2006-10-05

    申请号:US11216000

    申请日:2005-09-01

    IPC分类号: H03B5/08

    摘要: To present a variable capacity circuit and a control method of variable capacity capable of extending a variable capacity width of a variable capacity element to a maximum extent without increasing an element area of the variable capacity element or varying the level of control voltage, a variable capacity circuit 2 comprises a capacity value control circuit 11, varactors VA1 and VA2, and resistance elements R1 and R2. The capacity value control circuit 11 issues a variable output voltage CNTOUT depending on input control voltage VT, and controls the potentials at both ends of the varactors simultaneously. The output voltage CNTOUT is variably adjusted so as to have a negative correlation to the control voltage VT. Variable width of terminal voltage VD can be extended from a variable width SA1 to a variable width SA1a (range is +/−(Vcc1)). As a result, as shown in FIG. 5B, the changeable area of a varactor capacity value CV can be extended from a changeable area CA1 to a changeable area CA1a.

    摘要翻译: 为了呈现可变容量电路和可变容量的控制方法,其能够在不增加可变容量元件的元件面积或改变控制电压的水平的情况下将可变容量元件的可变容量宽度扩大到最大程度,可变容量 电路2包括电容值控制电路11,变容器VA 1和VA 2以及电阻元件R 1和R 2。电容值控制电路11根据输入的控制电压VT发出可变输出电压CNTOUT,并且控制电位 可变电抗器的两端同时进行。 可变地调节输出电压CNTOUT,使其与控制电压VT成负相关。 端子电压VD的可变宽度可以从可变宽度SA 1延伸到可变宽度SA1a(范围为+/-(Vcc1))。 结果,如图所示。 如图5B所示,可变容量值CV的可变区域可以从可更改区域CA 1扩展到可更改区域CA1a。

    Variable capacity circuit and control method of variable capacity circuit
    7.
    发明授权
    Variable capacity circuit and control method of variable capacity circuit 有权
    可变容量电路和可变容量电路的控制方法

    公开(公告)号:US07301412B2

    公开(公告)日:2007-11-27

    申请号:US11216000

    申请日:2005-09-01

    IPC分类号: H03B5/12

    摘要: To present a variable capacity circuit and a control method of variable capacity capable of extending a variable capacity width of a variable capacity element to a maximum extent without increasing an element area of the variable capacity element or varying the level of control voltage, a variable capacity circuit 2 comprises a capacity value control circuit 11, varactors VA1 and VA2, and resistance elements R1 and R2. The capacity value control circuit 11 issues a variable output voltage CNTOUT depending on input control voltage VT, and controls the potentials at both ends of the varactors simultaneously. The output voltage CNTOUT is variably adjusted so as to have a negative correlation to the control voltage VT. Variable width of terminal voltage VD can be extended from a variable width SA1 to a variable width SA1a (range is +/−(Vcc1)). As a result, as shown in FIG. 5B, the changeable area of a varactor capacity value CV can be extended from a changeable area CA1 to a changeable area CA1a.

    摘要翻译: 为了呈现可变容量电路和可变容量的控制方法,其能够在不增加可变容量元件的元件面积或改变控制电压的水平的情况下将可变容量元件的可变容量宽度扩大到最大程度,可变容量 电路2包括容量值控制电路11,变容器VA 1和VA 2以及电阻元件R 1和R 2。电容值控制电路11根据输入的控制电压VT发出可变输出电压CNTOUT,并且控制电位 可变电抗器的两端同时进行。 可变地调节输出电压CNTOUT,使其与控制电压VT成负相关。 端子电压VD的可变宽度可以从可变宽度SA 1延伸到可变宽度SA1a(范围为+/-(Vcc1))。 结果,如图所示。 如图5B所示,可变容量值CV的可变区域可以从可更改区域CA 1扩展到可更改区域CA1a。

    Capacitance difference detecting circuit and MEMS sensor
    8.
    发明申请
    Capacitance difference detecting circuit and MEMS sensor 有权
    电容差分检测电路和MEMS传感器

    公开(公告)号:US20050253596A1

    公开(公告)日:2005-11-17

    申请号:US10942127

    申请日:2004-09-16

    摘要: Oscillators have capacitors, respectively, whose capacitances change according to an external force and generate first oscillating signals according to the capacitances. Each of the capacitors is disposed, for example, between a substrate and a mass body that is movably disposed to face the substrate and oscillates in a direction perpendicular to the substrate. A detecting unit detects a relative difference between the capacitances of the capacitors as a difference between frequencies of the first oscillating signals. An angular speed or acceleration applied in a horizontal direction of the substrate is calculated according to the frequency change detected by the detecting unit. Therefore, a capacitance difference detecting circuit and a MEMS sensor that detect a minute change in the capacitances of the two capacitors caused by the external force are formed.

    摘要翻译: 振荡器分别具有电容器,其电容根据外力而变化,并根据电容产生第一振荡信号。 每个电容器例如设置在基板和可移动地设置成面对基板并在垂直于基板的方向上振荡的质量体之间。 检测单元检测作为第一振荡信号的频率之间的差异的电容器的电容之间的相对差。 根据由检测单元检测到的频率变化来计算在基板的水平方向上施加的角速度或加速度。 因此,形成检测由外力引起的两个电容器的电容的微小变化的电容差检测电路和MEMS传感器。