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39 条记录 (耗时 0.028 秒)

    Digital control loop to improve phase noise performance and RX/TX linearity
    31.
    发明授权
    Digital control loop to improve phase noise performance and RX/TX linearity 有权
    数字控制回路，以提高相位噪声性能和RX / TX线性度

    公开(公告)号：US07012472B2

    公开(公告)日：2006-03-14

    申请号：US10888861

    申请日：2004-07-09

    申请人： Zhiwei Xu ,  Yi-Cheng Wu ,  Mau-Chung Frank Chang

    发明人： Zhiwei Xu ,  Yi-Cheng Wu ,  Mau-Chung Frank Chang

    IPC分类号： H03L7/00

    CPC分类号： H03L5/00 ,  H03B5/04 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/124 ,  H03B5/1278 ,  H03B5/1293

    摘要： A system or method for controlling a voltage controlled oscillator (VCO) or LO buffer includes an amplitude detector for detecting an amplitude value at a node corresponding to the at least one output line. A comparator compares the detected amplitude value with a predetermined amplitude value, and outputs a first digital value when the detected amplitude value is greater than the predetermined amplitude value, and a second digital value when the detected amplitude value is less than the predetermined amplitude value. An accumulator accumulates outputs of the comparator so as to provide an accumulated digital amplitude value. A digital-to-analog converter converts the accumulated digital amplitude value to an accumulated analog amplitude value. The analog accumulated amplitude value is provided as an updated bias control signal to the bias transistor of the VCO or LO buffer.

    摘要翻译： 用于控制压控振荡器（VCO）或LO缓冲器的系统或方法包括：幅度检测器，用于检测与至少一条输出线对应的节点处的振幅值。 比较器将检测到的振幅值与预定的振幅值进行比较，当检测到的振幅值大于预定振幅值时，输出第一数字值，当检测到的振幅值小于预定振幅值时，输出第二数字值。 累加器累积比较器的输出，以提供累加的数字振幅值。 数模转换器将累积的数字振幅值转换为累积的模拟幅度值。 模拟累积振幅值作为更新的偏置控制信号提供给VCO或LO缓冲器的偏置晶体管。

    Periodic near field directors (PNFD) for short-range milli-meter-wave-wireless-interconnect (M2W2-interconnect)
    32.
    发明授权
    Periodic near field directors (PNFD) for short-range milli-meter-wave-wireless-interconnect (M2W2-interconnect) 有权

    公开(公告)号：US09634737B2

    公开(公告)日：2017-04-25

    申请号：US13993807

    申请日：2011-12-16

    申请人： Mau-Chung Frank Chang ,  Sai-Wang Tam

    发明人： Mau-Chung Frank Chang ,  Sai-Wang Tam

    IPC分类号： H04B7/00 ,  H04B5/02 ,  H04B5/00 ,  H01Q15/02

    CPC分类号： H04B5/02 ,  H01Q15/02 ,  H04B5/0031

    摘要： Periodic near field directors (PNFDs) are coupled to a transmitter and a receiver for a short-range millimeter wave wireless (M2W2) interconnect for transmitting and receiving radio frequency (RF) signals at millimeter-wave frequencies for short-range communication with high data rate capability between the transmitter and receiver. Each of the periodic near field directors is comprised of one or more periodic coupling structures (PCSs), wherein the periodic coupling structures are comprised of metallic strips positioned such that their lengthwise dimension is substantially perpendicular to a propagation direction of the radio frequency signals between the transmitter and receiver. Each of the periodic coupling structures is positioned parallel to adjacent periodic coupling structures with a separation distance between each periodic coupling structure being within one wavelength of the radio frequency signal. The periodic near field directors may include first and second periodic near field directors that are coupled to each other for transmitting and receiving the radio frequency signals between the first and second periodic near field directors, wherein there is an air gap between the first and second periodic near field directors.

    Digital control interface in heterogeneous multi-chip module
    34.
    发明授权
    Digital control interface in heterogeneous multi-chip module 有权
    异步多芯片模块中的数字控制接口

    公开(公告)号：US08264272B2

    公开(公告)日：2012-09-11

    申请号：US12428362

    申请日：2009-04-22

    申请人： Liyang Zhang ,  Pei-Ming Daniel Chow ,  Mau-Chung Frank Chang

    发明人： Liyang Zhang ,  Pei-Ming Daniel Chow ,  Mau-Chung Frank Chang

    IPC分类号： H03K19/0175 ,  H03F3/04 ,  H03F3/20

    CPC分类号： H03F3/195 ,  H03F1/302 ,  H03F2200/18

    摘要： A front-end module comprises a plurality of chips that includes first and second functional blocks and an interconnection circuit. The first functional block is formed using a first process type and includes a digital control circuit that generates a digital control signal in response to an external control signal from outside the front end module. The second functional block is formed using a second process type and includes a digitally controlled circuit controlled by the digital control signal generated by the first functional block. The second process type is different from the first process type. The interconnection circuit couples the digital control circuit and the digitally controlled circuit to provide the digital control signal to the digitally controlled circuit. In one aspect, the first functional block may be a low noise amplifier formed by a pseudomorphic high electron mobility transistor process. The second functional block may be a power amplifier formed by a heterojunction bipolar transistor process. In another aspect, the first functional block may be a power amplifier formed by a heterojunction bipolar transistor process. The second functional block may be a low noise amplifier formed by a pseudomorphic high electron mobility transistor process.

    摘要翻译： 前端模块包括多个芯片，其包括第一和第二功能块以及互连电路。 第一功能块使用第一处理类型形成，并且包括响应于来自前端模块外部的外部控制信号而生成数字控制信号的数字控制电路。 第二功能块使用第二处理类型形成，并且包括由第一功能块产生的数字控制信号控制的数字控制电路。 第二种处理类型与第一种类型不同。 互连电路耦合数字控制电路和数字控制电路，以向数字控制电路提供数字控制信号。 在一个方面，第一功能块可以是由伪像高电子迁移率晶体管工艺形成的低噪声放大器。 第二功能块可以是由异质结双极晶体管工艺形成的功率放大器。 在另一方面，第一功能块可以是由异质结双极晶体管工艺形成的功率放大器。 第二功能块可以是由伪像高电子迁移率晶体管工艺形成的低噪声放大器。

    SYSTEMS AND METHODS FOR TRANSMISSION AND RECEPTION OF DATA INCLUDING FREQUENCY AND CHANNEL CODE SELECTION
    36.
    发明申请
    SYSTEMS AND METHODS FOR TRANSMISSION AND RECEPTION OF DATA INCLUDING FREQUENCY AND CHANNEL CODE SELECTION 有权
    用于传输和接收数据的系统和方法，包括频率和通道代码选择

    公开(公告)号：US20080298442A1

    公开(公告)日：2008-12-04

    申请号：US12060807

    申请日：2008-04-01

    申请人： Christopher Deng ,  Yi Fan ,  Igor Elgorriaga ,  Mau-Chung Frank Chang

    发明人： Christopher Deng ,  Yi Fan ,  Igor Elgorriaga ,  Mau-Chung Frank Chang

    IPC分类号： H04B1/38

    CPC分类号： H04L1/1854 ,  H04L1/1692

    摘要： Systems and methods are disclosed for wireless transmission and reception of data including processing and buffering features. According to one or more exemplary aspects, there is provided a wireless audio receiver for receiving a plurality of packets of encoded audio data. Moreover, the receiver includes at least one receiving component that receives the plurality of packets to generate a plurality of decoded signals, a decoding component that decodes the first packet of encoded data transmitted to produce decoded data, and a selecting component that identifies the mechanisms for receiving additional encoded data. Other exemplary embodiments may include one or more receiving components that processing data regarding antenna, frequencies and channels selected for transmission, as well as an audio component that receives the decoded signals and produces decoded audio signals.

    摘要翻译： 公开了用于无线传输和接收包括处理和缓冲特征的数据的系统和方法。 根据一个或多个示例性方面，提供了一种用于接收多个编码音频数据分组的无线音频接收器。 此外，接收机包括接收多个分组以生成多个解码信号的至少一个接收组件，解码发送的第一编码数据分组以产生解码数据的解码部件，以及识别用于 接收附加的编码数据。 其它示例性实施例可以包括处理关于选择用于传输的天线，频率和信道的数据的一个或多个接收组件，以及接收解码信号并产生解码音频信号的音频组件。

    Tunable Artificial Dielectrics
    38.
    发明申请
    Tunable Artificial Dielectrics 有权
    可调人造电介质

    公开(公告)号：US20080204170A1

    公开(公告)日：2008-08-28

    申请号：US11996578

    申请日：2006-07-25

    申请人： Mau-Chung Frank Chang ,  Daquan Huang ,  William Hant

    发明人： Mau-Chung Frank Chang ,  Daquan Huang ,  William Hant

    IPC分类号： H01P1/20 ,  H01G7/06 ,  H03B5/12

    CPC分类号： H01L27/0808 ,  H01L23/5223 ,  H01L29/93 ,  H01L29/94 ,  H01L2924/0002 ,  H01L2924/3011 ,  H01P1/18 ,  H03B5/187 ,  H03L7/04 ,  H03L7/0812 ,  H01L2924/00

    摘要： Tuning devices and methods are disclosed. One of the devices comprises a metal structure connected with artificial dielectric elements, and variable capacitance devices. Each variable capacitance device is connected with a respective artificial dielectric element and with a control signal. Control of the variation of the capacitance allows the desired tuning. Another device comprises metallic structures connected with artificial dielectric elements and switches connected between the artificial dielectric elements. Turning ON and OFF the switches allows the capacitance between artificial dielectric elements to be varied and a signal guided by the metallic structures to be tuned.

    摘要翻译： 公开了调谐装置和方法。 其中一个装置包括与人造电介质元件连接的金属结构和可变电容器件。 每个可变电容器件与相应的人造电介质元件和控制信号连接。 控制电容的变化允许期望的调谐。 另一个装置包括与人工介电元件连接的金属结构和连接在人造介电元件之间的开关。 打开和关闭开关允许人造介质元件之间的电容变化，并且由金属结构引导的信号进行调谐。

    Resonant Types Of Common-Source/Common-Emitter Struture For High Gain Amplification
    39.
    发明申请
    Resonant Types Of Common-Source/Common-Emitter Struture For High Gain Amplification 审中-公开
    用于高增益放大的共源/共发射极共振共振类型

    公开(公告)号：US20080197929A1

    公开(公告)日：2008-08-21

    申请号：US11996582

    申请日：2006-07-31

    申请人： Mau-Chung Frank Chang ,  Daquan Huang

    发明人： Mau-Chung Frank Chang ,  Daquan Huang

    IPC分类号： H03F3/16

    CPC分类号： H03F3/193 ,  H03F3/2176

    摘要： Radio frequency/millimeter wave integrated circuits (RF/MMICs) that employ a resonance mechanism between an input stage and a transistor are disclosed. The circuits contain an input stage, a transistor; and a transformer connected between either a gate or a base of the transistor and a voltage supply of the input stage. The methods disclosed maximize either a collector current or a drain current of a transistor by placing a transformer between the transistor and a voltage source.

    摘要翻译： 公开了在输入级和晶体管之间采用共振机构的射频/毫米波集成电路（RF / MMIC）。 电路包含输入级，晶体管; 以及连接在晶体管的栅极或基极与输入级的电压源之间的变压器。 所公开的方法通过在晶体管和电压源之间放置变压器来最大化晶体管的集电极电流或漏极电流。