Amplifier and radio frequency power amplifier using the same
    21.
    发明授权
    Amplifier and radio frequency power amplifier using the same 失效
    放大器和射频功率放大器使用相同

    公开(公告)号:US07102427B2

    公开(公告)日:2006-09-05

    申请号:US10922146

    申请日:2004-08-20

    IPC分类号: H03F3/38 H03G3/20

    CPC分类号: H03F1/0227 H03F2200/432

    摘要: An amplifier using a wide band, high efficiency, and low distortion amplifier free from clipping distortion, and a high efficiency and low distortion radio frequency power amplifier, using that amplifier, which can be applied to wide band wireless communication systems are provided. The amplifier has a DC—DC converter 2, augmented with a low pass filter 4, for amplifying the low frequency components of an input signal from a terminal 5, and a class B amplifier, augmented with a high pass filter, for amplifying the input signal and supplying its high frequency components after amplification. The DC—DC converter and the class B amplifier are connected in parallel, and the power supply voltage of the class B amplifier is controlled with the low frequency components of the input signal.

    摘要翻译: 提供了一种使用宽带,高效率和低失真放大器的放大器,无限幅失真,以及高效率和低失真射频功率放大器,使用该放大器,可应用于宽带无线通信系统。 放大器具有DC-DC转换器2,增强了低通滤波器4,用于放大来自端子5的输入信号的低频分量,以及增加了高通滤波器的B类放大器,用于放大输入 信号并在放大后提供其高频分量。 DC-DC转换器和B类放大器并联,B类放大器的电源电压由输入信号的低频分量控制。

    Semiconductor device and method of manufacturing the same
    22.
    发明申请
    Semiconductor device and method of manufacturing the same 失效
    半导体装置及其制造方法

    公开(公告)号:US20060138458A1

    公开(公告)日:2006-06-29

    申请号:US11316908

    申请日:2005-12-27

    IPC分类号: H01L31/109

    CPC分类号: H01L29/7371 H01L29/66318

    摘要: This invention is intended to provide an HBT capable of achieving, if the HBT is a collector-up HBT, the constriction of the emitter layer disposed directly under an external base layer, and reduction in base-emitter junction capacity, or if the HBT is an emitter-up HBT, reduction in base-collector junction capacity. For the collector-up HBT, window structures around the sidewalls of a collector are used to etch either the emitter layer disposed directly under the external base layer, or an emitter contact layer For the emitter-up HBT, window structures around the sidewalls of an emitter are used to etch either the collector layer disposed directly under the external base layer, or a collector contact layer. In both HBTs, the external base layer is supported by a columnar structure to ensure mechanical strength.

    摘要翻译: 本发明旨在提供一种如果HBT是集电极HBT,则可以实现直接位于外部基极层下方的发射极层的收缩,以及基极 - 发射极结能量的降低,或HBT为 发射极HBT,基极 - 集电极结电容降低。 对于收集器HBT,围绕集电极侧壁的窗口结构用于蚀刻直接位于外部基极层下方的发射极层或发射极接触层。对于发射极上升HBT,围绕侧壁的窗口结构 发射极用于蚀刻直接位于外部基底层下方的集电极层或集电极接触层。 在两个HBT中,外部基层由柱状结构支撑以确保机械强度。

    Radio frequency power amplifier
    25.
    发明申请
    Radio frequency power amplifier 有权
    射频功率放大器

    公开(公告)号:US20050110573A1

    公开(公告)日:2005-05-26

    申请号:US11023414

    申请日:2004-12-29

    摘要: The present invention provides a radio frequency power amplifier which may not introduce radio frequency loss during switching power amplifier units between high and low output power levels. By connecting a first-stage matching network M12 and first-stage matching network M13 to respective output nodes of a power amplifier unit A11 and power amplifier unit A12 that either one operate by switching, connecting the output nodes of the first-stage matching network M12 and M13 in parallel, connecting a last-stage matching network M11 between the junction of M12 and M13 and the output terminal OUT, the first-stage matching networks M12, M13, and last-stage matching network M11 are formed, for both power amplifier units A11 and A12, so that impedance matching is established between the output terminal OUT and the power amplifier unit in operation when one unit is in operation the other is in stop of operation. The present invention allows switching from one power amplifier unit to the other without the need of a radio frequency switch.

    摘要翻译: 本发明提供一种射频功率放大器,其可以在高输出功率级和低输出功率级之间的开关功率放大器单元期间不会引入射频损耗。 通过将第一级匹配网络M12和第一级匹配网络M13连接到通过切换操作的功率放大器单元A11和功率放大器单元A12的各个输出节点,连接第一级匹配网络M12的输出节点 M13并联连接M12和M13的连接点与输出端子OUT之间的最后一级匹配网络M11,形成第一级匹配网络M12,M13和最后级匹配网络M11,用于功率放大器 单元A11和A12,使得当一个单元在操作中另一个处于停止操作时,在操作中在输出端子OUT和功率放大器单元之间建立阻抗匹配。 本发明允许从一个功率放大器单元切换到另一个,而不需要射频切换。

    Semiconductor device and manufacturing method of the same
    26.
    发明申请
    Semiconductor device and manufacturing method of the same 审中-公开
    半导体器件及其制造方法相同

    公开(公告)号:US20050040497A1

    公开(公告)日:2005-02-24

    申请号:US10878358

    申请日:2004-06-29

    摘要: The technical subject of the invention is to inhibit disconnection of electrodes caused by a step and bursting caused by residual air. That is, an object of the present invention is to provide a semiconductor device capable of overcoming a drawback due to the shape of a concave portion present in the zinc blende type compound semiconductor substrate in which the area of the bottom is larger than the surface in the cross sectional shape, as well as a manufacturing method thereof. According to the invention, a hole or step present in the semiconductor substrate constituting the semiconductor device is formed into a normal mesa shape irrespective of the orientation of the crystals on the surface of the semiconductor substrate. Accordingly, the present invention uses a novel wet etching solution having an etching rate for a portion below the etching mask higher than that in the direction of the depth of the semiconductor substrate.

    摘要翻译: 本发明的技术课题是抑制由残留空气引起的台阶和破裂引起的电极断开。 也就是说,本发明的目的是提供一种半导体器件,其能够克服存在于闪锌矿型化合物半导体衬底中的凹部的形状的缺陷,其中底部的面积大于其中的表面 横截面形状及其制造方法。 根据本发明,构成半导体器件的半导体衬底中存在的孔或台阶形成为正常的台面形状,而与半导体衬底的表面上的晶体取向无关。 因此,本发明使用对蚀刻掩模下方的蚀刻速度高于半导体衬底的深度方向的蚀刻速率的新型湿式蚀刻溶液。

    Semiconductor integrated circuit device and wireless communication system
    28.
    发明授权
    Semiconductor integrated circuit device and wireless communication system 有权
    半导体集成电路器件和无线通信系统

    公开(公告)号:US08396430B2

    公开(公告)日:2013-03-12

    申请号:US13114340

    申请日:2011-05-24

    IPC分类号: H04B1/44

    CPC分类号: H04B1/006 H04B1/52

    摘要: Disclosed are a semiconductor integrated circuit device and a wireless communication system that are capable of improving reception sensitivity. The wireless communication system includes, for instance, a first duplexer, a second duplexer, a first low-noise amplifier circuit, and a second low-noise amplifier circuit. A transmission band compliant with a communication standard is split into two segments for use, namely, low- and high-frequency transmission bands. A reception band compliant with the communication standard is split into two segments for use, namely, low- and high-frequency reception bands. The first duplexer uses the low-frequency transmission band and low-frequency reception band as passbands. The second duplexer uses the high-frequency transmission band and high-frequency reception band as passbands. A signal received from the first duplexer and a signal received from the second duplexer are respectively amplified by the first and the second low-noise amplifier circuits, which are respectively provided to handle such signals.

    摘要翻译: 公开了能够提高接收灵敏度的半导体集成电路装置和无线通信系统。 无线通信系统包括例如第一双工器,第二双工器,第一低噪声放大器电路和第二低噪声放大器电路。 符合通信​​标准的传输频带被分成两个段,即低频和高频传输频带。 符合通信​​标准的接收频段被分为两段供低频和高频接收频段使用。 第一双工器使用低频传输频带和低频接收频带作为通带。 第二双工器使用高频传输频带和高频接收频带作为通带。 从第一双工器接收的信号和从第二双工器接收的信号分别由分别提供以处理这种信号的第一和第二低噪声放大器电路放大。

    Radio frequency (RF) power amplifier and RF power amplifier apparatus
    29.
    发明授权
    Radio frequency (RF) power amplifier and RF power amplifier apparatus 有权
    射频(RF)功率放大器和RF功率放大器装置

    公开(公告)号:US07876156B2

    公开(公告)日:2011-01-25

    申请号:US12412728

    申请日:2009-03-27

    IPC分类号: H03G3/30

    摘要: An RF power amplifier has a final-stage amplifier stage which generates an RF transmit output signal, a signal detector which detects an RF transmit output level, a first detector, a second detector and a control circuit. The final-stage amplifier stage includes a transistor and a load element and performs saturation type nonlinear amplification and non-saturation type linear amplification. The first detector and the control circuit maintain the RF transmit output signal approximately constant with respect to a variation in load at an antenna at the saturation type nonlinear amplification. The second detector and the control circuit reduce an increase in the output voltage of the final stage transistor with respect to an overload state of the antenna at the non-saturation type linear amplification.

    摘要翻译: RF功率放大器具有产生RF发射输出信号的最终级放大器级,检测RF发射输出电平的信号检测器,第一检测器,第二检测器和控制电路。 最后一级放大器级包括晶体管和负载元件,并执行饱和型非线性放大和非饱和型线性放大。 第一检测器和控制电路保持RF发射输出信号相对于饱和型非线性放大在天线处的负载变化大致恒定。 第二检测器和控制电路在非饱和型线性放大时相对于天线的过载状态减小了最终级晶体管的输出电压的增加。

    Radio frequency power amplifier module
    30.
    发明授权
    Radio frequency power amplifier module 失效
    射频功率放大器模块

    公开(公告)号:US07248118B2

    公开(公告)日:2007-07-24

    申请号:US10830049

    申请日:2004-04-23

    IPC分类号: H03G3/10

    摘要: A radio frequency power amplifier module that brings sufficient attenuation to a radio frequency signal in a bias supply line connecting a bias control part and a radio frequency power amplifier part without increasing module substrate area is aimed. At least one bonding pad 106 having a capacitance component to a ground and stitch structure inductances 108, 109 composed of a bonding wire 105 provided via the bonding pad are provided in the bias supply line connecting the bias control part and the radio frequency power amplifier part.

    摘要翻译: 针对连接偏置控制部分和射频功率放大器部分而不增加模块基板面积的偏置电源线中的射频信号的充分衰减的射频功率放大器模块。 至少一个具有接地电容分量的接合焊盘106和由经由接合焊盘提供的接合线105组成的针脚结构电感108,109设置在偏置电源线中,该偏置电源线连接偏置控制部分和射频功率放大器部分 。