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    • 73. 发明申请
    • METHOD AND SYSTEM FOR CHIP-TO-CHIP MESH NETWORKS
    • 用于芯片到芯片网络的方法和系统
    • US20100297954A1
    • 2010-11-25
    • US12469231
    • 2009-05-20
    • Ahmadreza RofougaranMaryam Rofougaran
    • Ahmadreza RofougaranMaryam Rofougaran
    • H04B1/38
    • H04B1/40H01L23/66H01L25/0655H01L2223/6677H01L2924/0002H01L2924/00
    • A wireless device comprising a plurality of chips may be operable to communicate wireless signals via a mesh network comprising a plurality of integrated directional antennas on the plurality of chips. Wireless signals may be communicated between the plurality of the chips and/or with devices external to the wireless device via the mesh network. Beam-formed wireless signals may be communicated via the plurality of integrated directional antennas. The plurality of chips may be integrated on a single package or on a plurality of packages, which may comprise one or more circuit boards. Wireless signals may be communicated with devices external to the single package via the mesh network. The directional antennas may comprise patch antennas and/or dipole antennas.
    • 包括多个芯片的无线设备可以用于经由包括多个芯片上的多个集成定向天线的网状网络来传送无线信号。 无线信号可以经由网状网络在多个芯片之间和/或与无线设备外部的设备之间进行通信。 波束形成的无线信号可以经由多个集成定向天线进行通信。 多个芯片可以集成在单个封装上或多个封装上,其可以包括一个或多个电路板。 无线信号可以经由网状网络与单个包装外部的装置通信。 定向天线可以包括贴片天线和/或偶极天线。
    • 75. 发明申请
    • METHOD AND SYSTEM FOR A MULTI-PORT DISTRIBUTED ANTENNA
    • 用于多端口分布式天线的方法和系统
    • US20100202326A1
    • 2010-08-12
    • US12367892
    • 2009-02-09
    • Ahmadreza RofougaranMaryam Rofougaran
    • Ahmadreza RofougaranMaryam Rofougaran
    • H04J3/00H04B1/40
    • H04B1/18H01Q23/00
    • Methods and systems for a multi-port distributed antenna are disclosed and may include configuring one or more amplifiers to communicate signals via one or more ports on a distributed antenna. A characteristic impedance of the distributed antenna at each of the one or more ports may be configured by a location of the one or more ports on the distributed antenna. The amplifiers may be impedance matched to the distributed antenna by coupling each of the amplifiers to the ports based on the characteristic impedance. The amplifiers may include power amplifiers and/or low noise amplifiers. The signals may be time division duplexed. The signals communicated via the ports on the distributed antenna may include RF signals. The distributed antenna may be integrated on a chip with the amplifiers or may be located external to a chip with the amplifiers. The distributed antenna may include a microstrip antenna.
    • 公开了用于多端口分布式天线的方法和系统,并且可以包括配置一个或多个放大器以经由分布式天线上的一个或多个端口传送信号。 在一个或多个端口中的每个端口处的分布式天线的特征阻抗可以由分布式天线上的一个或多个端口的位置来配置。 基于特性阻抗,放大器可以通过将每个放大器耦合到端口而与分布式天线阻抗匹配。 放大器可以包括功率放大器和/或低噪声放大器。 信号可以是时分双工的。 通过分布式天线上的端口传送的信号可以包括RF信号。 分布式天线可以与放大器集成在芯片上,或者可以与放大器位于芯片的外部。 分布式天线可以包括微带天线。
    • 77. 发明申请
    • METHOD AND SYSTEM FOR FREQUENCY CONTROL IN A FREQUENCY SHIFTING REPEATER
    • 频率转换器中频率控制的方法和系统
    • US20100159859A1
    • 2010-06-24
    • US12348798
    • 2009-01-05
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H03D7/16
    • H04B7/15507H03D7/166
    • Aspects of a method and system for frequency control in a frequency shifting repeater are provided. In this regard, a reference frequency may be divided to generate a first pair of local oscillator (LO) signals, the first pair of LO signals may be divided to generate a second pair of LO signals. The two pairs of LO signals may be utilized to frequency shift a received signal for repeating the signal on a different frequency. The frequency shifted signal may be generated by down-converting the received signal utilizing the first pair of LO signals, up-converting the down-converted signal utilizing the second pair of LO signals, and combining the resulting up-converted signals. The reference frequency may be divided by a first scaling factor to generate the first pair of LO signal which, in turn, may be divided by a second scaling factor to generate the second pair of LO signals.
    • 提供了用于频移中继器中频率控制的方法和系统的方面。 在这点上,参考频率可以被划分以产生第一对本地振荡器(LO)信号,第一对LO信号可被划分以产生第二对LO信号。 可以利用两对LO信号来对接收的信号进行频率偏移,以在不同频率上重复该信号。 可以通过利用第一对LO信号对接收信号进行下变频,利用第二对LO信号对下变频信号进行上变频,并组合所生成的上变频信号,来产生频移信号。 参考频率可以除以第一缩放因子以产生第一对LO信号,该第一对LO信号又可以被第二比例因子除以产生第二对LO信号。
    • 78. 发明申请
    • METHOD AND SYSTEM FOR DYNAMICALLY TUNING AND CALIBRATING AN ANTENNA USING ANTENNA HOPPING
    • 用于天线振荡的动态调谐和校准天线的方法和系统
    • US20100150287A1
    • 2010-06-17
    • US12710207
    • 2010-02-22
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H04B1/10H04B1/16
    • H04B1/713H04B1/18
    • Methods and systems for dynamically tuning and calibrating an antenna using antenna hopping are disclosed. In this regard, in a wireless device comprising an antenna that is configurable into a plurality of configurations, determining a subset of the configurations, where each configuration of the subset enables received signal strength above a threshold for a wireless channel, may be determined. During a time interval in which the wireless device is receiving signals on the wireless channel, the antenna may be configured to sequentially utilize each configuration of the subset. During the time interval, a plurality of samples of the wireless channel may be generated, where each of the samples corresponds to a different one of the configurations of the subset. The plurality of samples may be aggregated. The aggregated samples may be processed to recover information communicated on the wireless channel.
    • 公开了使用天线跳频来动态调谐和校准天线的方法和系统。 在这方面,在包括可配置成多个配置的天线的无线设备中,确定配置的子集,其中子集的每个配置使接收信号强度高于无线信道的阈值。 在无线设备在无线信道上接收信号的时间间隔期间,天线可以被配置为顺序地利用该子集的每个配置。 在时间间隔期间,可以生成无线信道的多个样本,其中每个样本对应于子集的不同配置。 可以聚合多个样本。 可以处理聚合样本以恢复在无线信道上传送的信息。
    • 79. 发明授权
    • Method and system for signal generation via a PLL with undersampled feedback
    • 通过具有欠采样反馈的PLL产生信号的方法和系统
    • US07724096B2
    • 2010-05-25
    • US11864843
    • 2007-09-28
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H03B19/14H03L7/18
    • H03L7/18
    • Aspects of a method and system for signal generation via a PLL with undersampled feedback are provided. In this regard, the output of a VCO may clock a DDFS to generate a sampling frequency, and the output of the VCO may be undersampled at the sampling frequency to generate a feedback signal for controlling the VCO. Additionally, a control word for controlling the DDFS may be generated, and may be based on a phase difference between the feedback signal and a reference signal. The sampling frequency may be determined such that an aliasing product of the undersampling occurs at a frequency of the reference signal. Also, the feedback signal may be filtered to select a desired aliasing product from a plurality of aliasing products. The output of the VCO may be frequency divided before clocking the DDFS, and a divisor of the division may be programmatically controlled.
    • 提供了一种通过具有欠采样反馈的PLL产生信号的方法和系统。 在这点上,VCO的输出可以使DDFS产生采样频率,并且VCO的输出可能以采样频率欠采样,以产生用于控制VCO的反馈信号。 另外,可以产生用于控制DDFS的控制字,并且可以基于反馈信号和参考信号之间的相位差。 可以确定采样频率,使得欠采样的混叠乘积以参考信号的频率发生。 而且,可以对反馈信号进行滤波以从多个混叠产品中选择所需的混叠产物。 在对DDFS进行计时之前,VCO的输出可以被分频,并且可以编程地控制除法器的除数。
    • 80. 发明授权
    • Method and system for signal generation via a PLL with DDFS feedback path
    • 通过具有DDFS反馈路径的PLL产生信号的方法和系统
    • US07683722B2
    • 2010-03-23
    • US11863531
    • 2007-09-28
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H03L7/00
    • H03L7/1806H03L7/0891
    • Aspects of a method and system for signal generation via a PLL with a DDFS feedback path are provided. In this regard, a phase difference between a reference signal and a feedback signal may be utilized to control a VCO, wherein the feedback signal is generated by a DDFS. Voltage, current and/or power levels of the generated feedback signal may be limited to a determined range of values. Moreover, the feedback signal may be based on an output of the VCO and a digital control word input to the DDFS. The digital control word may be programmatically controlled by, for example, a processor. Additionally, the control word may be determined based on a desired frequency of the generated feedback signal and a desired output frequency of the VCO. Accordingly, the DDFS may be clocked by the output of the VCO, or by a divided down version of the VCO output.
    • 提供了通过具有DDFS反馈路径的PLL产生信号的方法和系统的方面。 在这方面,可以利用参考信号和反馈信号之间的相位差来控制VCO,其中反馈信号由DDFS产生。 产生的反馈信号的电压,电流和/或功率电平可以被限制在确定的值范围内。 此外,反馈信号可以基于VCO的输出和输入到DDFS的数字控制字。 数字控制字可以由例如处理器编程控制。 另外,可以基于产生的反馈信号的期望频率和VCO的期望输出频率来确定控制字。 因此,DDFS可以由VCO的输出或VCO输出的分频版本来计时。