Transmitter with improved power efficiency
    51.
    发明授权
    Transmitter with improved power efficiency 有权
    变送器具有更高的功率效率

    公开(公告)号:US07630693B2

    公开(公告)日:2009-12-08

    申请号:US11600351

    申请日:2006-11-16

    IPC分类号: H04B1/04

    摘要: A power amplifier (PA) line-up (210) and a method (500) for more efficiently utilizing battery power are disclosed. PA line-up (210) includes a driver (220), a matching circuit (214), and a PA (230) coupled to a matching circuit (216), wherein matching circuit (216) is configured to be coupled to a filter (260). PA line-up (210) includes a transmission line (260) coupled to matching circuit (216) and a switch (262) configured to selectively couple driver (220) to either matching circuit (214) or matching circuit (216) such that signal (205) is capable of by-passing PA (230) when signal (205) does not need to be amplified by PA (230). Furthermore, PA line-up (210) may include a second transmission line (250) so that signal (205) is capable of by-passing a driver (220) and a PA (230) when signal (205) does not need to be amplified by driver (220) and PA (230).

    摘要翻译: 公开了一种用于更有效地利用电池电力的功率放大器(PA)阵容(210)和方法(500)。 PA阵列(210)包括驱动器(220),匹配电路(214)和耦合到匹配电路(216)的PA(230),其中匹配电路(216)被配置为耦合到滤波器 (260)。 PA阵列(210)包括耦合到匹配电路(216)的传输线(260)和配置成将驱动器(220)选择性地耦合到匹配电路(214)或匹配电路(216)的开关(262),使得 当信号(205)不需要被PA放大(230)时,信号(205)能够旁路PA(230)。 此外,PA阵列(210)可以包括第二传输线(250),使得当信号(205)不需要时,信号(205)能够旁路驱动器(220)和PA(230) 由驱动器(220)和PA(230)放大。

    SELF-POLING PIEZOELECTRIC MEMS DEVICE
    52.
    发明申请
    SELF-POLING PIEZOELECTRIC MEMS DEVICE 有权
    自激式压电MEMS器件

    公开(公告)号:US20090085432A1

    公开(公告)日:2009-04-02

    申请号:US11864266

    申请日:2007-09-28

    申请人: Lianjun Liu

    发明人: Lianjun Liu

    摘要: A self-poling piezoelectric based MEMS device is configured for piezoelectric actuation in response to application of a device operating voltage. The MEMS device comprises a beam, a first electrode disposed on the beam, a layer of piezoelectric material having a self-poling thickness disposed overlying a portion of the first electrode, and a second electrode overlying the layer of piezoelectric material. The layer of piezoelectric material is self-poled in response to application of the device operating voltage across the first and second electrodes. In addition, the self-poled piezoelectric material has a poling direction established according to a polarity orientation of the device operating voltage as applied across the first and second electrodes.

    摘要翻译: 响应于器件工作电压的应用,自极化基于压电的MEMS器件被配置为用于压电致动。 MEMS器件包括光束,设置在光束上的第一电极,具有设置在第一电极的一部分上的自极化厚度的压电材料层和覆盖在压电材料层上的第二电极。 响应于在第一和第二电极上施加器件工作电压,压电材料层是自极化的。 此外,自极化压电材料具有根据施加在第一和第二电极上的器件工作电压的极性取向而建立的极化方向。

    Control and testing of a micro electromechanical switch
    53.
    发明授权
    Control and testing of a micro electromechanical switch 有权
    微机电开关的控制和测试

    公开(公告)号:US07479785B2

    公开(公告)日:2009-01-20

    申请号:US11465311

    申请日:2006-08-17

    IPC分类号: G01R31/00

    摘要: A circuit includes a micro electro mechanical switch and a detection circuit. The micro electro mechanical switch has a movable portion positioned to form an electrical connection between a first electrical contact and a second electrical contact in response to an electrostatic force provided by a top activation electrode and a bottom activation electrode. The detection circuit is electrically coupled to the top and bottom activation electrodes and is for detecting a first capacitance value between the top and bottom activation electrodes when the movable portion is in a first position and for detecting a second capacitance value when the movable portion is in a second position. By detecting a change in the capacitance, it can be determined if the switch is open or closed.

    摘要翻译: 电路包括微机电开关和检测电路。 微电机械开关具有可移动部分,其被定位成响应于由顶部激活电极和底部激活电极提供的静电力而在第一电触点和第二电触头之间形成电连接。 检测电路电耦合到顶部和底部激活电极,并且用于当可移动部分处于第一位置时检测顶部和底部激活电极之间的第一电容值,并且当可移动部分处于第一位置时检测第二电容值 第二个位置 通过检测电容的变化,可以确定开关是开或关。

    METHOD OF MAKING CONTACT POSTS FOR A MICROELECTROMECHANICAL DEVICE
    54.
    发明申请
    METHOD OF MAKING CONTACT POSTS FOR A MICROELECTROMECHANICAL DEVICE 有权
    制造微电子设备接触点的方法

    公开(公告)号:US20080314723A1

    公开(公告)日:2008-12-25

    申请号:US11767413

    申请日:2007-06-22

    申请人: Lianjun Liu

    发明人: Lianjun Liu

    摘要: A device 20 includes a substrate 22 coupled with a substrate 24 such that a volume 32 is formed between the substrates 22, 24. Contact posts 48, 50 on the substrate 22 and a cantilever beam structure 36 on the substrate 24 are located within the volume 32. The cantilever beam structure has a conductive trace 38 that is selectively contactable with the contact posts 48, 50 to yield a microelectromechanical (MEMS) switch within the volume 32. Fabrication methodology for making the contact posts 48, 50 entails forming post protrusions 68, 70 on the substrate 22 and shaping post protrusions 68, 70 so that they acquire a rounded shape. Input and output signal lines 42, 44 are constructed such that respective portions of input and output signal lines 42, 44 overly corresponding post protrusions 68, 70 and take on the shape of post protrusions 68, 70.

    摘要翻译: 器件20包括与衬底24耦合的衬底22,使得在衬底22,24之间形成体积32.衬底22上的接触柱48,50和衬底24上的悬臂梁结构36位于体积 悬臂梁结构具有能够与接触柱48,50选择性地接触的导电迹线38,以在体积32内产生微机电(MEMS)开关。用于制造接触柱48,50的制造方法需要形成后突起68 ,70在基板22上,并且成形柱突起68,70,使得它们获得圆形。 输入和输出信号线42,44被构造成使得输入和输出信号线42,44的相应部分过度对应的柱形突起68,70并且呈立柱形突起68,70的形状。

    Transmitter with improved power efficiency
    55.
    发明申请
    Transmitter with improved power efficiency 有权
    变送器具有更高的功率效率

    公开(公告)号:US20080119214A1

    公开(公告)日:2008-05-22

    申请号:US11600351

    申请日:2006-11-16

    IPC分类号: H04B7/00 H03H7/38

    摘要: A power amplifier (PA) line-up (210) and a method (500) for more efficiently utilizing battery power are disclosed. PA line-up (210) includes a driver (220), a matching circuit (214), and a PA (230) coupled to a matching circuit (216), wherein matching circuit (216) is configured to be coupled to a filter (260). PA line-up (210) includes a transmission line (260) coupled to matching circuit (216) and a switch (262) configured to selectively couple driver (220) to either matching circuit (214) or matching circuit (216) such that signal (205) is capable of by-passing PA (230) when signal (205) does not need to be amplified by PA (230). Furthermore, PA line-up (210) may include a second transmission line (250) so that signal (205) is capable of by-passing a driver (220) and a PA (230) when signal (205) does not need to be amplified by driver (220) and PA (230).

    摘要翻译: 公开了一种用于更有效地利用电池电力的功率放大器(PA)阵容(210)和方法(500)。 PA阵列(210)包括驱动器(220),匹配电路(214)和耦合到匹配电路(216)的PA(230),其中匹配电路(216)被配置为耦合到滤波器 (260)。 PA阵列(210)包括耦合到匹配电路(216)的传输线(260)和配置成将驱动器(220)选择性地耦合到匹配电路(214)或匹配电路(216)的开关(262),使得 当信号(205)不需要被PA放大(230)时,信号(205)能够旁路PA(230)。 此外,PA阵列(210)可以包括第二传输线(250),使得当信号(205)不需要时,信号(205)能够旁路驱动器(220)和PA(230) 由驱动器(220)和PA(230)放大。

    Methods and apparatus for a hybrid antenna switching system
    56.
    发明申请
    Methods and apparatus for a hybrid antenna switching system 审中-公开
    混合天线切换系统的方法和装置

    公开(公告)号:US20080102762A1

    公开(公告)日:2008-05-01

    申请号:US11590277

    申请日:2006-10-30

    IPC分类号: H04B1/44

    CPC分类号: H04B1/48 H04B1/006

    摘要: A hybrid antenna switching system in a communications device generally includes an antenna, a first switching device, and a second switching device. The first switching device is configured to selectively couple the antenna to a first set of communication paths within the communications device, wherein the first set of communication paths includes at least one transmit path associated with a first type of wireless communication standard (e.g., a global system for communication (GSM) standard). The second switching device is configured to selectively couple the antenna to a second set of communication paths within the communications device, wherein the second set of communication paths includes at least one reception path associated with the first type of wireless communication standard. The second switching device is a micro-electromechanic system (MEMS) switch integrated with the first switching device on, for example, a common printed circuit board (PCB) or multi-chip module (MCM) substrate.

    摘要翻译: 通信设备中的混合天线切换系统通常包括天线,第一交换设备和第二交换设备。 第一交换设备被配置为选择性地将天线耦合到通信设备内的第一组通信路径,其中第一组通信路径包括与第一类型的无线通信标准相关联的至少一个发送路径(例如,全局 通信系统(GSM)标准)。 第二交换设备被配置为选择性地将天线耦合到通信设备内的第二组通信路径,其中第二组通信路径包括与第一类型的无线通信标准相关联的至少一个接收路径。 第二开关装置是与第一开关装置集成在例如普通印刷电路板(PCB)或多芯片模块(MCM))基板上的微机电系统(MEMS)开关。

    Radio frequency circuit with integrated on-chip radio frequency signal coupler
    58.
    发明授权
    Radio frequency circuit with integrated on-chip radio frequency signal coupler 有权
    具有集成片上射频信号耦合器的射频电路

    公开(公告)号:US07305223B2

    公开(公告)日:2007-12-04

    申请号:US11021843

    申请日:2004-12-23

    IPC分类号: H04B1/28

    摘要: A radio frequency (“RF”) circuit configured in accordance with an embodiment of the invention is fabricated on a substrate using integrated passive device (“IPD”) process technology. The RF circuit includes at least one RF signal line section and an integrated RF coupler located proximate to the RF signal line section. The integrated RF coupler, its output and grounding contact pads, and its matching network are fabricated on the same substrate using the same IPD process technology. The integrated RF coupler provides efficient and reproducible RF coupling without increasing the die footprint of the RF circuit.

    摘要翻译: 根据本发明的实施例构造的射频(“RF”)电路使用集成无源器件(“IPD”)处理技术在基板上制造。 RF电路包括至少一个RF信号线部分和位于RF信号线部分附近的集成RF耦合器。 使用相同的IPD工艺技术,在同一基板上制造集成RF耦合器,其输出和接地接触焊盘及其匹配网络。 集成RF耦合器提供高效和可重复的射频耦合,而不增加射频电路的裸片占空比。

    Methods and apparatus for a packaged MEMS switch
    59.
    发明申请
    Methods and apparatus for a packaged MEMS switch 审中-公开
    封装MEMS开关的方法和装置

    公开(公告)号:US20070236307A1

    公开(公告)日:2007-10-11

    申请号:US11401797

    申请日:2006-04-10

    申请人: Lianjun Liu

    发明人: Lianjun Liu

    IPC分类号: H01P1/10

    摘要: A micro-electro mechanical system (NEMS) device, such as a MEMS switch (100), includes a package seal (104) bonded to a substrate (102), wherein an electrode 106 (e.g., an actuation electrode associated with a switch) is provided on an inner surface (103) of the package seal (104). The MEMS switch (100) might include, for example, a central switch structure implementing a double-pole, single-throw switch using a push-pull arrangement of internal activation electrodes (106, 108). The central switch structure might include a cantilevered moveable actuation electrode (122) or an electrode supported in two or more peripheral regions.

    摘要翻译: 诸如MEMS开关(100)的微机电系统(NEMS)装置包括结合到基板(102)的封装密封件(104),其中电极106(例如与开关相关联的致动电极) 设置在包装密封件(104)的内表面(103)上。 MEMS开关(100)可以包括例如使用内部激活电极(106,108)的推挽布置来实现双极单掷开关的中央开关结构。 中心开关结构可以包括悬臂可移动致动电极(122)或支撑在两个或更多个周边区域中的电极。

    Methods and apparatus for a MEMS varactor
    60.
    发明授权
    Methods and apparatus for a MEMS varactor 有权
    MEMS变容二极管的方法和装置

    公开(公告)号:US07141989B1

    公开(公告)日:2006-11-28

    申请号:US11401592

    申请日:2006-04-10

    申请人: Lianjun Liu

    发明人: Lianjun Liu

    IPC分类号: G01R27/26 H01L21/20 B01B7/02

    摘要: A micro-electro mechanical system (MEMS) variable capacitor (varactor) generally includes a substrate (102), a first capacitive plate (112) formed on the substrate, a flexible structure (150) coupled to the substrate, a second capacitive plate (116) and a first electrode (122) formed on the flexible structure; a package seal (104) coupled to the substrate and having a second electrode (106) formed thereon, wherein the distance between the first capacitive plate and the second capacitive plate (and hence, the capacitance of the structure) is responsive to a bias voltage applied to the electrodes.

    摘要翻译: 微机电系统(MEMS)可变电容器(变容二极管)通常包括衬底(102),形成在衬底上的第一电容板(112),耦合到衬底的柔性结构(150),第二电容板 116)和形成在柔性结构上的第一电极(122) 封装密​​封件(104),其耦合到所述基板并且具有形成在其上的第二电极(106),其中所述第一电容板和所述第二电容板之间的距离(并且因此所述结构的电容)响应偏置电压 施加到电极。