Architecture for multi-carrier receiver
    33.
    发明授权
    Architecture for multi-carrier receiver 有权
    多载波接收机的架构

    公开(公告)号:US06798848B1

    公开(公告)日:2004-09-28

    申请号:US09605947

    申请日:2000-06-28

    Abstract: A receiver (10) for a wireless telecommunications system that provides relatively wideband signal processing of received signals without increased signal distortion so that multiple received signals can be simultaneously processed. The receiver (10) includes a specialized LNA (16), frequency down-converter (18) and ADC (20) to perform the wideband signal processing while maintaining receiver performance. The frequency down-converter (18) employs a suitable mixer (28), BPA (32), attenuator (34), and transformer (36) that are tuned to provide the desired frequency down-conversion and amplitude control over the desired wideband. The down-converter devices are selected depending on the particular performance criteria of the ADC (20). A specialized digital channelizer (22) is included in the receiver (10) that receives the digital signal from the ADC (20), and separates the signals into the multiple channels. In one embodiment, the frequency down-conversion is performed in a single down-conversion process, and the ADC (20) employs delta-sigma processing to provide digital conversion over the complete frequency band. In an alternate embodiment, the frequency down-conversion is performed in a double down-conversion process so that a less complex ADC (62) can be used.

    Abstract translation: 一种用于无线电信系统的接收机(10),其提供接收信号的相对宽带信号处理,而不增加信号失真,使得可以同时处理多个接收信号。 接收器(10)包括专用LNA(16),降频转换器(18)和ADC(20),以在维持接收机性能的同时执行宽带信号处理。 降频转换器(18)采用合适的混频器(28),BPA(32),衰减器(34)和变压器(36),其被调谐以在期望的宽带上提供期望的频率下变频和幅度控制。 根据ADC的特定性能标准(20)选择下转换器器件。 在接收器(10)中包括一个专门的数字信道化器(22),其接收来自ADC(20)的数字信号,并将信号分离成多个信道。 在一个实施例中,在单个下变频处理中执行降频转换,并且ADC(20)采用delta-sigma处理来在整个频带上提供数字转换。 在替代实施例中,在双下变频过程中执行降频转换,使得可以使用较不复杂的ADC(62)。

    Multi-carrier receiver for a wireless telecommunication system
    34.
    发明授权
    Multi-carrier receiver for a wireless telecommunication system 有权
    用于无线电信系统的多载波接收机

    公开(公告)号:US06631255B1

    公开(公告)日:2003-10-07

    申请号:US09605481

    申请日:2000-06-28

    Abstract: A receiver (10) for a wireless telecommunications system that provides relatively wideband signal processing of received signals without increased signal distortion so that multiple received signals can be simultaneously processed. The receiver (10) includes a specialized LNA (16), frequency down-converter (18) and ADC (20) to perform the wideband signal processing while maintaining receiver performance. The frequency down-converter (18) employs a suitable mixer (28), BPA (32), attenuator (34), and transformer (36) that are tuned to provide the desired frequency down-conversion and amplitude control over the desired wideband. The down-converter devices are selected depending on the particular performance criteria of the ADC (20). A specialized digital channelizer (22) is included in the receiver (10) that receives the digital signal from the ADC (20), and separates the signals into the multiple channels. In one embodiment, the frequency down-conversion is performed in a single down-conversion process, and the ADC (20) employs delta-sigma processing to provide digital conversion over the complete frequency band. In an alternate embodiment, the frequency down-conversion is performed in a double down-conversion process so that a less complex ADC (62) can be used.

    Abstract translation: 一种用于无线电信系统的接收机(10),其提供接收信号的相对宽带信号处理,而不增加信号失真,使得可以同时处理多个接收信号。 接收器(10)包括专用LNA(16),降频转换器(18)和ADC(20),以在维持接收机性能的同时执行宽带信号处理。 降频转换器(18)采用合适的混频器(28),BPA(32),衰减器(34)和变压器(36),其被调谐以在期望的宽带上提供期望的频率下变频和幅度控制。 根据ADC的特定性能标准(20)选择下转换器器件。 在接收器(10)中包括一个专门的数字信道化器(22),其接收来自ADC(20)的数字信号,并将信号分离成多个信道。 在一个实施例中,在单个下变频处理中执行降频转换,并且ADC(20)采用delta-sigma处理来在整个频带上提供数字转换。 在替代实施例中,在双下变频过程中执行降频转换,使得可以使用较不复杂的ADC(62)。

    Composite panel insert with hold out recess feature
    35.
    发明授权
    Composite panel insert with hold out recess feature 有权
    复合面板插入件带有凹槽凹槽功能

    公开(公告)号:US06488460B1

    公开(公告)日:2002-12-03

    申请号:US09561652

    申请日:2000-05-02

    CPC classification number: F16B5/01 F16B5/0208 Y10S411/999

    Abstract: A panel insert for use with a structural panel and a fastener having a hold out mechanism. The panel insert comprises a body portion disposed within the structural panel. The body portion includes a first surface, an opposing second surface, and an aperture passing therethrough for receiving the fastener. A recessed portion opening to the second surface is provided to receive the hold out mechanism and secure the fastener to the structural panel.

    Abstract translation: 一种与结构面板一起使用的面板插件和具有保持机构的紧固件。 面板插入件包括设置在结构面板内的主体部分。 主体部分包括第一表面,相对的第二表面和穿过其中的用于接收紧固件的孔。 设置开口到第二表面的凹入部分以接收保持机构并将紧固件固定到结构面板上。

    Compact tiltrotor pylon-conversion actuation system
    39.
    发明授权
    Compact tiltrotor pylon-conversion actuation system 有权
    紧凑型倾斜转塔塔转换致动系统

    公开(公告)号:US07913947B2

    公开(公告)日:2011-03-29

    申请号:US11662556

    申请日:2004-09-30

    CPC classification number: B64C29/0033

    Abstract: A tiltrotor aircraft having a wing and a rotatable pylon carried by the wing is disclosed. The pylon is secured to a pylon support spindle that extends into the wing. A link connects a radial portion of the pylon support spindle to a radial portion of an actuator spindle, such that the pylon support spindle is rotated as the actuator spindle is rotated.

    Abstract translation: 公开了一种具有机翼和由机翼承载的可旋转吊架的倾斜旋翼飞机。 塔架固定在延伸到机翼中的挂架支撑轴上。 连杆将支柱支撑主轴的径向部分连接到致动器主轴的径向部分,使得当执行器主轴旋转时,托架支撑主轴旋转。

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