MODULATION CIRCUIT AND WIRELESS COMMUNICATION APPARATUS
    2.
    发明申请
    MODULATION CIRCUIT AND WIRELESS COMMUNICATION APPARATUS 审中-公开
    调制电路和无线通信装置

    公开(公告)号:US20150004922A1

    公开(公告)日:2015-01-01

    申请号:US14143845

    申请日:2013-12-30

    发明人: Masato KOHTANI

    IPC分类号: H03C1/36 H03C7/02 H04L27/20

    CPC分类号: H03C1/36 H04L27/04

    摘要: A modulation circuit that can improve an on/off ratio or increase short pulses, and a wireless communication apparatus are provided. The modulation circuit includes a first transistor in which a first signal is input to a gate terminal; a second transistor that is cascode-connected to the first transistor by connecting a source terminal to a drain terminal of the first transistor, that receives an input of a second signal having a frequency lower than the first signal at a gate terminal, and that modulates the second signal by the first signal and outputs the modulated second signal; and a switch circuit that is formed on the output side of the second transistor. The switch circuit is turned on in synch with a switching of the second transistor to an off state, and turned off in synch with a switching of the second transistor to an on state.

    摘要翻译: 提供了可以提高开/关比或增加短脉冲的调制电路,以及无线通信装置。 调制电路包括第一晶体管,其中第一信号被输入到栅极端; 通过将源极端子连接到第一晶体管的漏极端子并与第一晶体管并联连接的第二晶体管,其在栅极端子处接收具有低于第一信号的频率的第二信号的输入,并且调制 所述第二信号由所述第一信号输出并输出所述经调制的第二信号; 以及形成在第二晶体管的输出侧的开关电路。 开关电路与第二晶体管的切换同步,断开状态,并且与第二晶体管的切换同步的导通状态下断开。

    Modulator, mixer and method for amplitude shift keying modulation
    3.
    发明授权
    Modulator, mixer and method for amplitude shift keying modulation 有权
    调制器,混频器和振幅键控调制方法

    公开(公告)号:US08797112B2

    公开(公告)日:2014-08-05

    申请号:US13400129

    申请日:2012-02-20

    IPC分类号: H03C1/00

    摘要: An ASK modulator includes a baseband unit which obtains a sequence comprising at least one amplitude value and adds an additional value to each of the at least one amplitude value to generate a modified sequence; a digital-to-analog converter coupled to the baseband unit, the digital-to-analog converter converts the modified sequence to generate a first signal, the additional value is determined based on a half scale of the digital-analog converter; and a mixer which receives the first signal and a second signal and generate a modulated signal by mixing the first signal with the second signal.

    摘要翻译: ASK调制器包括:基带单元,其获得包括至少一个幅度值的序列,并且对所述至少一个幅度值中的每一个增加附加值以生成修改的序列; 耦合到所述基带单元的数模转换器,所述数模转换器转换所述经修改的序列以产生第一信号,所述附加值基于所述数模转换器的半标度来确定; 以及混合器,其接收第一信号和第二信号,并通过将第一信号与第二信号混合来产生调制信号。

    POWER FEEDING DEVICE AND WIRELESS POWER FEEDING SYSTEM
    4.
    发明申请
    POWER FEEDING DEVICE AND WIRELESS POWER FEEDING SYSTEM 有权
    电力馈电装置和无线电力馈电系统

    公开(公告)号:US20120187771A1

    公开(公告)日:2012-07-26

    申请号:US13352383

    申请日:2012-01-18

    IPC分类号: H02J17/00

    摘要: A resonant power feeding system that can provide high power transmission efficiency between a power feeding device and a power reception device without dynamically controlling the oscillation frequency in accordance with the distance between the power feeding device and the power reception device. High power transmission efficiency between the power feeding device and the power reception device is obtained by addition of a structure for adjusting the matching condition to both the power reception device and the power feeding device. Specifically, a transmission-reception circuit and a matching circuit are provided in both the power reception device and the power feeding device, and wireless signals for adjusting the matching circuit are transmitted and received through a resonant coil. Thus, the power feeding device can efficiently supply power to the power reception device without adjusting the oscillation frequency.

    摘要翻译: 一种谐振馈电系统,其能够在馈电装置和受电装置之间提供高功率传输效率,而不需要根据供电装置和受电装置之间的距离动态地控制振荡频率。 通过添加用于调节与受电装置和供电装置的匹配条件的结构,可以获得供电装置和受电装置之间的高功率传输效率。 具体地,在受电装置和供电装置中设置发送接收电路和匹配电路,通过谐振线圈发送接收用于调整匹配电路的无线信号。 因此,馈电装置可以在不调整振荡频率的情况下有效地向受电装置供电。

    Highly optimized digital IQ transmitter chain
    5.
    发明授权
    Highly optimized digital IQ transmitter chain 有权
    高度优化的数字IQ发射机链

    公开(公告)号:US08213542B2

    公开(公告)日:2012-07-03

    申请号:US12044814

    申请日:2008-03-07

    申请人: Stefan van Waasen

    发明人: Stefan van Waasen

    IPC分类号: H04L27/32

    摘要: Circuitry separates a modulation signal into digital sign and magnitude signal components. The digital magnitude signal is converted to an analog magnitude signal. The analog magnitude signal is the mixed with an in-phase or quadrature carrier signal under the influence of the digital sign signal and routed to a driver output stage.

    摘要翻译: 电路将调制信号分离成数字符号和幅度信号分量。 数字幅度信号被转换成模拟量值信号。 模拟幅度信号在数字信号的影响下与同相或正交载波信号混合,并被路由到驱动器输出级。

    Power-efficient spectrum shaping for a magnetic link
    6.
    发明授权
    Power-efficient spectrum shaping for a magnetic link 有权
    用于磁链路的功率谱频谱整形

    公开(公告)号:US08174333B1

    公开(公告)日:2012-05-08

    申请号:US12984375

    申请日:2011-01-04

    IPC分类号: H03C3/00

    摘要: Various embodiments relate to a transmission circuit and related method of shaping the transmission spectrum of a carrier signal. The transmission circuit may comprise a plurality of switching amplifier stages that are controlled by a modulation sequence produced by a transmission (TX) modulator. The TX modulator may receive the transmission data as a sequence of bit groups and may produce a modulation sequence including a plurality of control bits that may drive each of the switching amplifier stages. In some embodiments, one or more pulse-shaping filters may modify in-phase (I) and quadrature (Q) phase components of the transmission data. The modified components may directly shape spectral content of the output signal produced by a transmission driving circuit. Higher quantities of amplifier stages included in the transmission driving circuit may add higher granularity to the shape of the spectrum of the output signal.

    摘要翻译: 各种实施例涉及对载波信号的传输频谱进行整形的传输电路和相关方法。 传输电路可以包括由传输(TX)调制器产生的调制序列控制的多个开关放大器级。 TX调制器可以将发送数据作为位组的序列接收,并且可以产生包括可以驱动每个开关放大器级的多个控制位的调制序列。 在一些实施例中,一个或多个脉冲整形滤波器可以修改传输数据的同相(I)和正交(Q)相位分量。 改进的部件可以直接形成由传输驱动电路产生的输出信号的频谱内容。 包括在传输驱动电路中的较高数量的放大器级可以对输出信号的频谱的形状增加更高的粒度。

    Multi-chip stack structure and signal transmission method thereof
    8.
    发明授权
    Multi-chip stack structure and signal transmission method thereof 有权
    多芯片堆叠结构及其信号传输方法

    公开(公告)号:US08138825B2

    公开(公告)日:2012-03-20

    申请号:US12785399

    申请日:2010-05-21

    摘要: A multi-chip stack structure and a signal transmission method are disclosed in specification and drawing, where the multi-chip stack structure includes first and second chips. The first chip includes a first inductance coil with a first series capacitor, and the second chip includes a second inductance coil with a second series capacitor. The first and second inductance coils are magnetically coupled to each other. The magnetically coupled inductance coils and the capacitors constitute a coupling filter.

    摘要翻译: 多芯片堆叠结构和信号传输方法在说明书和附图中公开,其中多芯片堆叠结构包括第一和第二芯片。 第一芯片包括具有第一串联电容器的第一电感线圈,并且第二芯片包括具有第二串联电容器的第二电感线圈。 第一和第二电感线圈彼此磁耦合。 磁耦合电感线圈和电容器构成耦合滤波器。

    Radio frequency power amplifier improvements using pre-distortion of an amplitude modulation power supply
    9.
    发明授权
    Radio frequency power amplifier improvements using pre-distortion of an amplitude modulation power supply 有权
    射频功率放大器改进使用预失真的幅度调制电源

    公开(公告)号:US07884681B1

    公开(公告)日:2011-02-08

    申请号:US12112006

    申请日:2008-04-30

    IPC分类号: H03C1/00 H03C1/02 H03C1/06

    摘要: Embodiments of the present invention include amplitude-modulated or polar-modulated radio frequency (RF) power amplifier circuitry, in which an envelope power supply input to an RF power amplifier is powered by a pre-distorted amplitude modulation (AM) power supply. The pre-distorted AM power supply receives an AM signal, which is then pre-distorted and amplified to provide an AM power supply signal to the RF power amplifier. The pre-distortion of the AM signal is used to improve the linearity, the efficiency, or both, of the RF power amplifier. The pre-distortion provides a feed-forward system, which may allow use of a reduced bandwidth pre-distorted AM signal to an AM power supply and a reduced bandwidth AM power supply, which may increase efficiency.

    摘要翻译: 本发明的实施例包括幅度调制或极调制的射频(RF)功率放大器电路,其中向RF功率放大器输入的包络电源由预失真的幅度调制(AM)电源供电。 预失真的AM电源接收AM信号,然后将其预失真和放大,以向RF功率放大器提供AM电源信号。 AM信号的预失真用于提高RF功率放大器的线性度,效率或两者。 预失真提供前馈系统,其可以允许对AM电源使用减少带宽的预失真AM信号以及降低带宽的AM电源,这可以提高效率。

    Method and Apparatus for Applying Clock Phase and Frequency Offset
    10.
    发明申请
    Method and Apparatus for Applying Clock Phase and Frequency Offset 失效
    应用时钟相位和频率偏移的方法和装置

    公开(公告)号:US20100188129A1

    公开(公告)日:2010-07-29

    申请号:US12361129

    申请日:2009-01-28

    IPC分类号: H03K3/00

    摘要: Various apparatuses and methods for offsetting the phase and/or frequency of a clock signal are disclosed herein. For example, some embodiments provide an apparatus for generating a clock signal, including a quadrature delay circuit connected to an input clock signal. The quadrature delay circuit outputs components of the input clock signal with different phase shifts. A first amplitude modulator is connected to the first output of the quadrature delay circuit, and a second amplitude modulator is connected to the second output of the quadrature delay circuit. A summer combines the output of the first and second amplitude modulators.

    摘要翻译: 这里公开了用于抵消时钟信号的相位和/或频率的各种装置和方法。 例如,一些实施例提供了一种用于产生时钟信号的装置,包括连接到输入时钟信号的正交延迟电路。 正交延迟电路输出具有不同相移的输入时钟信号的分量。 第一幅度调制器连接到正交延迟电路的第一输出,第二幅度调制器连接到正交延迟电路的第二输出端。 夏季结合了第一和第二幅度调制器的输出。