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    • 4. 发明申请
    • GALLIUM NITRIDE TRAVELING WAVE STRUCTURES
    • GALLIUM NITRIDE行驶波浪结构
    • WO2008100889A3
    • 2009-08-06
    • PCT/US2008053659
    • 2008-02-12
    • LOCKHEED CORPTRIQUINT SEMICONDUCTOR INCROBINSON KEVIN LSAUNIER PAULTSERNG HUA-QUEN
    • ROBINSON KEVIN LSAUNIER PAULTSERNG HUA-QUEN
    • H01L29/20
    • H03F3/54H03F3/607
    • A traveling wave device employs an active Gallium Nitride FET. The Gallium Nitride FET has a plurality of gate feeding fingers connecting to an input gate transmission line. The FET has a drain electrode connected to an output drain transmission line with the source electrode connected to a point of reference potential. The input and output transmission lines are terminated with terminating impedances which are not matched to the gate and drain transmission lines. The use of Gallium Nitride enables the terminating impedance to be at much higher levels than in the prior art. The use of Gallium Nitride permits multiple devices to be employed, thus resulting in higher gain amplifiers with higher voltage operation and higher frequency operation. A cascode traveling wave amplifier employing GaN FETs is also described having high gain and bandwidth.
    • 行波装置采用有源氮化镓FET。 氮化镓FET具有连接到输入栅极传输线的多个栅极馈电指状物。 FET具有连接到输出漏极传输线的漏电极,源电极连接到参考电位点。 输入和输出传输线由端接阻抗端接,其与栅极和漏极传输线不匹配。 使用氮化镓可使端接阻抗比现有技术高得多。 使用氮化镓允许使用多个器件,从而导致具有较高电压操作和较高频率操作的较高增益放大器。 还描述了采用GaN FET的共源共栅行波放大器具有高增益和带宽。
    • 7. 发明申请
    • ACCURATE POWER DETECTION FOR A MULTI-STAGE AMPLIFIER
    • 准确检测多级放大器的功率
    • WO2004045065A2
    • 2004-05-27
    • PCT/US2003/033464
    • 2003-10-20
    • TRIQUINT SEMICONDUCTOR, INC.
    • LIU, LiSOUCHUNS, Christopher, C.LI, PingHENDERSON, Gregory, N.
    • H03F
    • H03F1/0205H03F3/189H03F3/68
    • A multi-stage amplifier is coupled with a power detector. The multi-stage amplifier includes a plurality of amplifier stages in series, with a signal path extending through them. The power detector is coupled to an interior node of the amplifier along the signal path, and is operable to sample a first signal being transmitted on the signal path. The power detector outputs a second signal reflective of a power of the first signal. In one embodiment, the interior node is in a matching network of the amplifier disposed between a first amplifier stage and a final amplifier stage of the amplifier. The second signal may be used in a feedback network to adjust an amount of amplification of the first signal by the amplifier.
    • 多级放大器与功率检测器耦合。 多级放大器包括串联的多个放大器级,信号路径延伸穿过它们。 功率检测器沿着信号路径耦合到放大器的内部节点,并且可操作以对在信号路径上传输的第一信号进行采样。 功率检测器输出反映第一信号的功率的第二信号。 在一个实施例中,内部节点位于设置在放大器的第一放大器级和末级放大器级之间的放大器的匹配网络中。 第二信号可以用在反馈网络中以调整放大器对第一信号的放大量。
    • 9. 发明申请
    • RF POWER AMPLIFIER WITH DISTRIBUTED BIAS CIRCUIT
    • 具有分布式偏置电路的RF功率放大器
    • WO02054583A3
    • 2004-03-25
    • PCT/US0148212
    • 2001-12-13
    • TRIQUINT SEMICONDUCTOR INC
    • APEL THOMAS RKNAPP ROBERT E
    • H03F1/30H03F3/19H03F3/21
    • H03F1/302
    • An improved amplifier circuit is disclosed. In one embodiment, the amplifier circuit includes an amplifier transistor that has a base terminal connected to receive an input signal. The amplifier circuit also includes a reference voltage source that generates a reference voltage at a reference voltage output node. A local bias circuit provides a bias voltage to the base terminal of the amplifier transistor. The local bias circuit includes a first transistor that has an emitter terminal coupled to the reference voltage output node, a collector terminal coupled to a supply voltage node, and a base terminal connected to the collector terminal. The local bias circuit also includes a second transistor that has a base terminal coupled to the base terminal of the first transistor, a collector terminal coupled to the supply voltage node, and an emitter terminal coupled to the base terminal of the amplifier transistor. The bias circuit provides a robust, thermally compensated bias voltage to any number of amplifier cells. The bias circuit is ballasted to prevent thermal runaway in any one of the amplifier cells.
    • 公开了一种改进的放大器电路。 在一个实施例中,放大器电路包括放大器晶体管,其具有连接的基极端子以接收输入信号。 放大器电路还包括在参考电压输出节点处产生参考电压的参考电压源。 局部偏置电路向放大器晶体管的基极提供偏置电压。 局部偏置电路包括具有耦合到参考电压输出节点的发射极端子,耦合到电源电压节点的集电极端子和连接到集电极端子的基极端子的第一晶体管。 局部偏置电路还包括第二晶体管,其具有耦合到第一晶体管的基极端子的基极端子,耦合到电源电压节点的集电极端子和耦合到放大器晶体管的基极端子的发射极端子。 偏置电路为任何数量的放大器单元提供稳健的热补偿偏置电压。 偏置电路被镇流以防止任何一个放大器单元中的热失控。
    • 10. 发明申请
    • THREE-LEVEL BALUN AND ITS MANUFACTURING METHOD
    • 三级巴伦及其制造方法
    • WO2002095865A1
    • 2002-11-28
    • PCT/US2002/015652
    • 2002-05-13
    • TRIQUINT SEMICONDUCTOR, INC.
    • APEL, Thomas, R.CAMPBELL, Richard, L.
    • H01P5/10
    • H01P5/10
    • A three-level semiconductor balun (10) is disclosed. In one embodiment, the balun (10) includes a first spiral-shaped transmission line (14) overlying a substrate. The first transmission line (14) has first and second ends. A second spiral-shaped transmission line (13) is substantially vertically aligned with the first transmission line (14). The second transmission line (13) has a first end electrically connected to the second end of the first transmission line (14). A third spiral-shaped transmission line (12) is substantially vertically aligned with the first and second transmission lines (14,13). The third transmission line (12) has a first end electrically connected to a second end of the second transmission line (13). The balun (10) may be integrated on the same chip with other RF circuit components, and is suitable for use at higher frequencies than most conventional baluns.
    • 公开了一种三电平半导体平衡 - 不平衡变压器(10)。 在一个实施例中,平衡 - 不平衡变换器(10)包括覆盖在衬底上的第一螺旋形传输线(14)。 第一传输线(14)具有第一和第二端。 第二螺旋形传输线(13)与第一传输线(14)基本垂直对准。 第二传输线(13)具有电连接到第一传输线(14)的第二端的第一端。 第三螺旋形传输线(12)与第一和第二传输线(14)大致垂直对准。 第三传输线(12)具有电连接到第二传输线(13)的第二端的第一端。 平衡 - 不平衡转换器(10)可以与其他RF电路组件集成在同一芯片上,并且适用于比大多数常规平衡 - 不平衡变换器更高的频率。