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118 条记录 (耗时 0.027 秒)

    Multi-mode radio with interference cancellation circuit
    71.
    发明申请
    Multi-mode radio with interference cancellation circuit 有权
    具有干扰消除电路的多模无线电

    公开(公告)号：US20050020297A1

    公开(公告)日：2005-01-27

    申请号：US10852640

    申请日：2004-05-24

    申请人： Timothy Axness ,  Leonid Kazakevich

    发明人： Timothy Axness ,  Leonid Kazakevich

    IPC分类号： H04B1/00 ,  H04B1/10 ,  H04B1/44 ,  H04Q20060101

    CPC分类号： H04B1/0057 ,  H04B1/525

    摘要： A multi-mode wireless transmit/receive unit (WTRU) includes at least one antenna, first and second communication mode receivers and a first communication mode transmitter. The first and second receivers simultaneously receive signals from the antenna. The first transmitter generates and sends a first type of signal to the antenna while, at the same time, the second receiver receives a second type of signal from the antenna. In a preferred embodiment, the WTRU further includes a vector multiplier configured to reduce or eliminate interference of signals received by the second receiver, the interference being caused by the first transmitter. The vector multiplier adjusts the phase and amplitude of noise (i.e., spurious in-band noise) measured by the second receiver. The WTRU may further include a second communication mode transmitter configured to generate and send a second type of signal to the antenna.

    摘要翻译： 多模式无线发射/接收单元（WTRU）包括至少一个天线，第一和第二通信模式接收机和第一通信模式发射机。 第一和第二接收机同时从天线接收信号。 第一发射机产生并向天线发送第一类型的信号，同时第二接收机从天线接收第二类型的信号。 在优选实施例中，WTRU还包括被配置为减少或消除由第二接收机接收的信号的干扰的矢量乘法器，该干扰由第一发射机引起。 矢量乘法器调节由第二接收机测量的噪声的相位和幅度（即，杂带带内噪声）。 WTRU可以进一步包括第二通信模式发射机，其被配置为产生并向天线发送第二类型的信号。

    Digital automatic gain control
    73.
    发明授权
    Digital automatic gain control 失效
    数字自动增益控制

    公开(公告)号：US07664201B2

    公开(公告)日：2010-02-16

    申请号：US11113603

    申请日：2005-04-25

    申请人： Leonid Kazakevich ,  Fatih Ozluturk

    发明人： Leonid Kazakevich ,  Fatih Ozluturk

    IPC分类号： H04K1/02

    CPC分类号： H03G7/001 ,  H03G3/3052

    摘要： An automatic gain control system prevents input overload by precisely controlling the input level of a received, digitally modulated signal without variable gain amplification. Limiting amplification in conjunction with a logarithmic detection splits an input signal path in two, providing separate phase and amplitude information for downstream digital signal processing, where the separate phase and amplitude information is processed without variable gain artifacts. The separated phase information may further be divided into I and Q signals.

    摘要翻译： 自动增益控制系统通过精确地控制接收到的数字调制信号的输入电平，从而防止输入过载，而无需增益放大。 限制放大结合对数检测将输入信号路径分成两部分，为下游数字信号处理提供单独的相位和幅度信息，其中单独的相位和幅度信息被处理而没有可变增益伪像。 分离的相位信息还可以被分成I和Q信号。

    METHOD AND SYSTEM FOR ADJUSTING THE AMPLITUDE AND PHASE CHARACTERISTICS OF REAL AND IMAGINARY SIGNAL COMPONENTS OF COMPLEX SIGNALS PROCESSED BY AN ANALOG RADIO TRANSMITTER
    74.
    发明申请
    METHOD AND SYSTEM FOR ADJUSTING THE AMPLITUDE AND PHASE CHARACTERISTICS OF REAL AND IMAGINARY SIGNAL COMPONENTS OF COMPLEX SIGNALS PROCESSED BY AN ANALOG RADIO TRANSMITTER 失效
    用于调节由模拟无线电发射机处理的复杂信号的实际和图像信号分量的幅度和相位特性的方法和系统

    公开(公告)号：US20090074108A1

    公开(公告)日：2009-03-19

    申请号：US12275806

    申请日：2008-11-21

    申请人： Alpaslan Demir ,  Leonid Kazakevich ,  Kenneth P. Kearney

    发明人： Alpaslan Demir ,  Leonid Kazakevich ,  Kenneth P. Kearney

    IPC分类号： H04B1/00

    CPC分类号： H03C3/406 ,  H04B1/30

    摘要： A method and system for determining amplitude and phase compensation values used to adjust the amplitude and phase characteristics of real and imaginary signal components of complex signals processed by an analog radio transmitter. The compensation values may be determined in response to detecting a significant temperature change in the transmitter. Corresponding amplitude and phase adjustment signals having levels that correspond to the compensation values are provided to respective amplitude and phase imbalance compensation modules to adjust the amplitude and phase characteristics of at least one of the real and imaginary signal components.

    摘要翻译： 用于确定用于调整由模拟无线电发射机处理的复信号的实信号和虚信号分量的幅度和相位特性的幅度和相位补偿值的方法和系统。 可以响应于检测到发射器中的明显的温度变化来确定补偿值。 具有对应于补偿值的电平的对应幅度和相位调整信号被提供给相应的幅度和相位不平衡补偿模块，以调整实信号分量和虚信号分量中的至少一个的振幅和相位特性。

    MULTI-MODE RADIO WITH INTERFERENCE CANCELLATION CIRCUIT
    76.
    发明申请
    MULTI-MODE RADIO WITH INTERFERENCE CANCELLATION CIRCUIT 有权
    具有干扰消除电路的多模无线电

    公开(公告)号：US20090047914A1

    公开(公告)日：2009-02-19

    申请号：US12255746

    申请日：2008-10-22

    申请人： Timothy A. Axness ,  Leonid Kazakevich

    发明人： Timothy A. Axness ,  Leonid Kazakevich

    IPC分类号： H04B1/44 ,  H04B1/38

    CPC分类号： H04B1/0057 ,  H04B1/525

    摘要： A multi-mode wireless transmit/receive unit (WTRU) includes at least one antenna, first and second communication mode receivers and a first communication mode transmitter. The first and second receivers simultaneously receive signals from the antenna. The first transmitter generates and sends a first type of signal to the antenna while, at the same time, the second receiver receives a second type of signal from the antenna. In a preferred embodiment, the WTRU further includes a vector multiplier configured to reduce or eliminate interference of signals received by the second receiver, the interference being caused by the first transmitter. The vector multiplier adjusts the phase and amplitude of noise (i.e., spurious in-band noise) measured by the second receiver. The WTRU may further include a second communication mode transmitter configured to generate and send a second type of signal to the antenna.

    摘要翻译： 多模式无线发射/接收单元（WTRU）包括至少一个天线，第一和第二通信模式接收机和第一通信模式发射机。 第一和第二接收机同时从天线接收信号。 第一发射机产生并向天线发送第一类型的信号，同时第二接收机从天线接收第二类型的信号。 在优选实施例中，WTRU还包括被配置为减少或消除由第二接收机接收的信号的干扰的矢量乘法器，该干扰由第一发射机引起。 矢量乘法器调节由第二接收机测量的噪声的相位和幅度（即，杂带带内噪声）。 WTRU可以进一步包括第二通信模式发射机，其被配置为产生并向天线发送第二类型的信号。

    Method and apparatus for dynamically adjusting a transmitter's impedance
    78.
    发明授权
    Method and apparatus for dynamically adjusting a transmitter's impedance 失效
    用于动态调整发射机阻抗的方法和装置

    公开(公告)号：US07379714B2

    公开(公告)日：2008-05-27

    申请号：US11022703

    申请日：2004-12-27

    申请人： Tanbir Haque ,  Alpaslan Demir ,  Leonid Kazakevich ,  Gerard Klahn

    发明人： Tanbir Haque ,  Alpaslan Demir ,  Leonid Kazakevich ,  Gerard Klahn

    IPC分类号： H04B1/02

    CPC分类号： H04B1/0458 ,  H03F1/0261 ,  H03F1/56 ,  H03F3/24 ,  H03F2200/207 ,  H03F2200/465 ,  H03G3/3042 ,  H04W52/52 ,  Y02D70/14

    摘要： A method and apparatus for dynamically adjusting the impedance between a transmitter's power amplifier (PA) and antenna to efficiently transfer power from the PA to the antenna. The impedance between the PA and the antenna is adjusted based on power level measurements and/or PA direct current (DC) consumption measurements, depending on whether the PA is a linear PA or a switch-mode PA. In another embodiment, a hybrid PA including a first stage linear PA and a second stage switch-mode PA is implemented in a transmitter. The hybrid PA selectively connects the output of the first stage linear PA to one of the input of the second stage switch-mode PA and the output of the hybrid PA, depending on the output power level of the first stage linear PA, the output power level of the hybrid PA, or a requirement indicated by a transmit power control (TPC) command.

    摘要翻译： 一种用于动态调整发射机功率放大器（PA）和天线之间的阻抗以有效地将功率从PA传输到天线的方法和装置。 根据PA是线性PA还是开关模式PA，PA和天线之间的阻抗根据功率电平测量和/或PA直流（DC）消耗测量值进行调整。 在另一个实施例中，包括第一级线性PA和第二级开关模式PA的混合PA实现在发射机中。 根据第一级线性PA的输出功率电平，混合PA选择性地将第一级线性PA的输出连接到第二级开关模式PA的输入和混合PA的输出之一，输出功率 混合PA的电平或由发射功率控制（TPC）指令指示的要求。

    TRANSCEIVER WITH HYBRID ADAPTIVE SELF-INTERFERENCE CANCELLER FOR REMOVING TRANSMITTER GENERATED NOISE TO PREVENT MODEM JAMMING
    79.
    发明申请
    TRANSCEIVER WITH HYBRID ADAPTIVE SELF-INTERFERENCE CANCELLER FOR REMOVING TRANSMITTER GENERATED NOISE TO PREVENT MODEM JAMMING 有权
    具有混合自适应自干扰解调器的收发器，用于去除发射机生成的噪声以防止调制解调器

    公开(公告)号：US20080089397A1

    公开(公告)日：2008-04-17

    申请号：US11872101

    申请日：2007-10-15

    申请人： Kurt Vetter ,  Leonid Kazakevich

    发明人： Kurt Vetter ,  Leonid Kazakevich

    IPC分类号： H04B1/38

    CPC分类号： H04B1/525 ,  H04L27/366

    摘要： A self-interference canceller (SIC) is incorporated into a transceiver to reduce or eliminate modem jamming when a transmitter in the transceiver transmits at high power levels. The SIC is configured to receive at a first input a transmitter noise reference signal including a self-interfering signal component generated by the transmitter, to receive at a second input a corrupted signal including the self-interfering signal component and a desired signal component generated by the transmitter, and to output a correction signal that resembles the self-interfering signal component. The correction signal is subtracted from the corrupted signal to generate a processed signal that is input to the modem. The SIC may be disabled when the output power of the transmitter is at a level below a predetermined threshold. The invention may be applied to a multi-radio access technology (RAT) transceiver.

    摘要翻译： 当收发器中的发射机以高功率电平传输时，自干扰消除器（SIC）被并入到收发器中以减少或消除调制解调器干扰。 SIC被配置为在第一输入处接收包括由发射机产生的自干扰信号分量的发射机噪声参考信号，以在第二输入处接收包括自干扰信号分量的损坏信号和由 并且输出类似于自干扰信号分量的校正信号。 从损坏的信号中减去校正信号，以产生输入到调制解调器的处理信号。 当发射机的输出功率处于低于预定阈值的电平时，SIC可被禁用。 本发明可以应用于多无线电接入技术（RAT）收发机。