FILTER FOR IMPROVED DRIVER CIRCUIT EFFICIENCY AND METHOD OF OPERATION
    1.
    发明申请
    FILTER FOR IMPROVED DRIVER CIRCUIT EFFICIENCY AND METHOD OF OPERATION 审中-公开
    用于改进驱动电路的滤波器效率和操作方法

    公开(公告)号:US20120242284A1

    公开(公告)日:2012-09-27

    申请号:US13424834

    申请日:2012-03-20

    摘要: This disclosure provides systems, methods and apparatus for increasing the efficiency of an amplifier when driven by a variable load. In one aspect a transmitter device is provided. The transmitter device includes a driver circuit characterized by an efficiency. The driver circuit is electrically connected to a transmit circuit characterized by an impedance. The transmitter device further includes a filter circuit electrically connected to the driver circuit and configured to modify the impedance to maintain the efficiency of the driver circuit at a level that is within 20% of a maximum efficiency of the driver circuit. The impedance is characterized by a complex impedance value that is within a range defined by a real first impedance value and a second real impedance value. A ratio of the first real impedance value to the second real impedance value is at least two to one.

    摘要翻译: 本公开提供了当由可变负载驱动时增加放大器的效率的系统,方法和装置。 在一个方面,提供发射机设备。 发射机装置包括以效率为特征的驱动电路。 驱动电路电连接到以阻抗为特征的发送电路。 发射机设备还包括电连接到驱动器电路并被配置为修改阻抗以将驱动器电路的效率维持在驱动器电路的最大效率的20%以内的水平的滤波器电路。 阻抗的特征在于在由实际第一阻抗值和第二实际阻抗值限定的范围内的复阻抗值。 第一实际阻抗值与第二实际阻抗值之比至少为2比1。

    SIGNALING CHARGING IN WIRELESS POWER ENVIRONMENT
    3.
    发明申请
    SIGNALING CHARGING IN WIRELESS POWER ENVIRONMENT 有权
    无线电源环境中的信号充电

    公开(公告)号:US20090286475A1

    公开(公告)日:2009-11-19

    申请号:US12249866

    申请日:2008-10-10

    IPC分类号: H04B5/00

    摘要: Exemplary embodiments are directed to wireless power transfer including generating an electromagnetic field at a resonant frequency of a transmitter to create a coupling-mode region within a near field of the transmitter during a synchronization portion of a time-multiplexed recurring period. During a power transmission portion of the recurring period, the electromagnetic field will continue to be generated when there is a receiver within the coupling-mode region, or the electromagnetic field will be disabled when there are no receivers within the coupling-mode region. Different segments of the power transmission portion are allocated to different receivers. The transmitter issues serial commands to the receivers by on/off keying the electromagnetic field. The receivers issue serial replies by changing the amount of power consumed from the electromagnetic field between two different states. The serial commands and serial replies are used to determine the number of receivers, their power requirements, and the allocation of segments.

    摘要翻译: 示例性实施例涉及无线功率传输,包括在发射机的谐振频率处产生电磁场,以在时间复用的周期性周期的同步部分期间在发射机的近场内创建耦合模式区域。 在重复周期的电力传输部分期间,当在耦合模式区域内存在接收器时,电磁场将继续产生,或者当耦合模式区域内没有接收器时,电磁场将被禁用。 电力传输部分的不同段被分配给不同的接收机。 发射机通过开/关键控电磁场向接收机发出串行命令。 接收机通过改变从两个不同状态之间的电磁场消耗的功率量来发出串行回复。 串行命令和串行答复用于确定接收机的数量,其功率需求和段的分配。

    Adaptive interference filtering
    4.
    发明授权
    Adaptive interference filtering 有权
    自适应干扰滤波

    公开(公告)号:US08270927B2

    公开(公告)日:2012-09-18

    申请号:US10983051

    申请日:2004-11-04

    IPC分类号: H04B1/10

    摘要: Systems and techniques for adaptive interference filtering in a communications device are disclosed. The communications device may include a transmitter, a receiver, a duplexer coupled to the transmitter and the receiver, and an adaptive filter disposed between the duplexer and the receiver. A processor may be configured to monitor cross modulation in the receiver between transmitter leakage through the duplexer and a jammer, and adapt the filter to vary its transmit signal rejection as a function of the cross modulation.

    摘要翻译: 公开了一种用于通信设备中的自适应干扰滤波的系统和技术。 通信设备可以包括发射机,接收机,耦合到发射机和接收机的双工器,以及布置在双工器和接收机之间的自适应滤波器。 处理器可以被配置为在发射机通过双工器和干扰器之间的泄漏中监测接收机中的交叉调制,并且调整滤波器以改变其作为交叉调制的函数的发射信号抑制。

    Frequency agile transceiver for use in a multi-band handheld communications device
    5.
    发明授权
    Frequency agile transceiver for use in a multi-band handheld communications device 有权
    用于多频带手持通信设备的频率捷变收发器

    公开(公告)号:US08145141B2

    公开(公告)日:2012-03-27

    申请号:US11266852

    申请日:2005-11-04

    IPC分类号: H04B1/40 H04K3/00

    摘要: A multi-band handheld communications device includes a transceiver including a transmitter having a transmit filter and a receiver having a receive filter, each of the transmit and receive filters having a bandpass region tunable across multiple bands, and a processor configured to select one of the multiple bands to operate the handheld communications device, and tune each of the transmit and receive filters based on the selected one of the multiple bands.

    摘要翻译: 多频带手持通信设备包括收发器,其包括具有发射滤波器的发射机和具有接收滤波器的接收机,所述发射和接收滤波器中的每一个具有可跨越多个频带调谐的带通区域,以及处理器,被配置为选择 多个频带以操作手持通信设备,并且基于所选择的多个频带之一来调谐发送和接收滤波器中的每一个。

    Electrically tunable bandpass filters
    7.
    发明授权
    Electrically tunable bandpass filters 有权
    电可调带通滤波器

    公开(公告)号:US07148770B2

    公开(公告)日:2006-12-12

    申请号:US11245639

    申请日:2005-10-06

    IPC分类号: H01P1/203

    CPC分类号: H01P1/20336

    摘要: A tunable bandpass filter includes at least one resonator having a reactance with a resonant frequency, a ferroelectric film having a dielectric constant with a value that changes with an applied electric field, and an electric field generating device for generating relatively constant electric fields of different strengths. The ferroelectric film is electrically coupled to the resonator so that the reactance of the resonator and therefore the resonant frequency of the resonator and the passband of the filter depends on the dielectric constant of the ferroelectric film. The electric field generating device is constructed and arranged to generate relatively constant electric fields within the ferroelectric film, thereby making the resonant frequency of the resonator and the passband of the filter a function of the strength of the relatively constant electric field.

    摘要翻译: 可调谐带通滤波器包括具有与谐振频率的电抗的至少一个谐振器,具有随着施加的电场变化的值的介电常数的铁电体膜和用于产生不同强度的相对恒定的电场的电场产生装置 。 铁电体膜电耦合到谐振器,使得谐振器的电抗和谐振器的谐振频率和滤波器的通带取决于铁电体膜的介电常数。 电场产生装置被构造和布置成在铁电体膜内产生相对恒定的电场,从而使谐振器的谐振频率和滤波器的通带成为相对恒定电场的强度的函数。