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    • 81. 发明授权
    • Method and system for power control with optimum power efficiency with a multi-port distributed antenna
    • 多端口分布式天线功率控制方法和系统,具有最佳的功率效率
    • US08086192B2
    • 2011-12-27
    • US12396964
    • 2009-03-03
    • Ahmadreza RofougaranMaryam Rofougaran
    • Ahmadreza RofougaranMaryam Rofougaran
    • H04B1/04
    • H04B1/0483H01Q3/267H01Q3/30H03F1/02H03F3/24H04B2001/045
    • Methods and systems for power control with optimum power efficiency with a multi-port distributed antenna are disclosed and may include selectively enabling one or more power amplifiers (PAs) coupled to the antenna. The selective enabling may be based on a desired output power radiated from the antenna, and the PAs may be coupled to ports on the antenna based on an output impedance of the PAs and a characteristic impedance of the ports. Each of the PAs may be configured for maximum efficiency in different power ranges. The power ranges may be inversely proportional to the output impedance of the PAs. The output power may be monitored utilizing a power detector, such as an envelope detector, coupled to the antenna. The antenna may be integrated on a chip with the one or more PAs or may be located external to the chip. The antenna may include a microstrip antenna.
    • 公开了利用多端口分布式天线具有最佳功率效率的功率控制的方法和系统,并且可以包括选择性地启用耦合到天线的一个或多个功率放大器(PA)。 选择性启用可以基于从天线辐射的期望的输出功率,并且可以基于PA的输出阻抗和端口的特性阻抗将PA耦合到天线上的端口。 每个PA可以配置为在不同功率范围内实现最大效率。 功率范围可能与PA的输出阻抗成反比。 可以使用耦合到天线的功率检测器(例如包络检测器)监视输出功率。 天线可以与一个或多个PA集成在芯片上,或者可以位于芯片的外部。 天线可以包括微带天线。
    • 84. 发明授权
    • Method and system for configurable differential or single-ended signaling in an integrated circuit
    • 集成电路中可配置的差分或单端信号的方法和系统
    • US08072287B2
    • 2011-12-06
    • US12056525
    • 2008-03-27
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H03H7/42H01P3/08
    • H03H7/422H01P5/10H03H2001/0085
    • Aspects of a method and system for configurable differential or single-ended signaling in an integrated circuit. In this regard, a balun comprising one or more loops fabricated in a plurality of metal layers in an integrated circuit may enable conversion between unbalanced and balanced signals. In this regard, balanced signal output by a power amplifier may be converted to a balanced signal for transmission via an antenna. Similarly, an unbalanced signal received by an antenna may be converted to a balanced signal for amplification by an amplifier with a balanced input. The loops may be fabricated in transmission line media such as microstrip and/or stripline. The loops may comprise ferromagnetic material which may be deposited on and/or within the IC. Signals converted via the balun may be in the 61 GHz-61.5 GHz ISM band.
    • 集成电路中可配置的差分或单端信令的方法和系统的方面。 在这方面,包括在集成电路中以多个金属层制造的一个或多个环的平衡 - 不平衡转换器可以实现不平衡信号和平衡信号之间的转换。 在这方面,由功率放大器输出的平衡信号可以被转换成平衡信号,以经天线传输。 类似地,由天线接收的不平衡信号可以被转换成平衡信号,以由具有平衡输入的放大器进行放大。 环路可以在诸如微带线和/或带状线的传输线介质中制造。 环可以包括可以沉积在IC上和/或IC内的铁磁材料。 通过平衡 - 不平衡变换器转换的信号可能在61 GHz-61.5 GHz ISM频段。
    • 85. 发明申请
    • METHOD AND SYSTEM FOR POLAR MODULATION WITH DISCONTINUOUS PHASE FOR RF TRANSMITTERS WITH INTEGRATED AMPLITUDE SHAPING
    • 具有集成放大倍数的射频发射器的不连续极性调制方法和系统
    • US20110291756A1
    • 2011-12-01
    • US11875063
    • 2007-10-19
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H03G3/20
    • H04L27/361H03C5/00H03F3/24H03F2200/336H04L27/362H04L27/368
    • Aspects of a method and system for polar modulation with discontinuous phase for RF transmitters with integrated amplitude shaping may include amplifying a signal via a plurality of amplifiers such that a combined gain of the plurality of amplifiers comprises a coarse amplitude gain, an amplitude offset gain and a pulse-shaping gain. A gain of one or more of the plurality of amplifiers may be adjusted to set the coarse amplitude gain. A gain of one or more of the plurality of amplifiers may be adjusted to set the amplitude offset gain and the pulse-shaping gain, wherein the one or more of the plurality of amplifiers used to set said amplitude offset gain and said pulse-shaping gain are distinct from the one or more of said plurality of amplifiers used to set the coarse amplitude gain.
    • 用于具有集成幅度整形的RF发射机的具有不连续相位的极性调制的方法和系统的方面可以包括通过多个放大器放大信号,使得多个放大器的组合增益包括粗振幅增益,振幅偏移增益和 脉冲整形增益。 可以调整多个放大器中的一个或多个的增益以设置粗略的幅度增益。 可以调整多个放大器中的一个或多个的增益以设置幅度偏移增益和脉冲整形增益,其中用于设置所述幅度偏移增益和所述脉冲整形增益的多个放大器中的一个或多个 与用于设置粗振幅增益的所述多个放大器中的一个或多个不同。
    • 86. 发明授权
    • Method and system for a multistandard proxy
    • 多标准代理的方法和系统
    • US08064936B2
    • 2011-11-22
    • US12039219
    • 2008-02-28
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H04B7/00H04B1/02H03C7/02
    • H04B7/0617
    • Aspects of a method and system for a multistandard proxy may include establishing a microwave communication link between a wireless portable storage device and a wireless transmitter and/or wireless receiver via a secondary wireless link. Beamforming parameters of a first antenna array coupled to the wireless portable storage device and a second antenna array coupled to the wireless transmitter and/or wireless receiver may be adjusted based on data received via the secondary wireless link. The wireless portable storage and the wireless transmitter and/or wireless receiver may exchange data via the first antenna array and the second antenna array. A secondary wireless link may be established to transmit setup data for the microwave communication link. The secondary wireless link may be established via a Bluetooth and/or WAN protocol.
    • 用于多标准代理的方法和系统的方面可以包括经由次级无线链路在无线便携式存储设备与无线发射器和/或无线接收器之间建立微波通信链路。 可以基于经由辅助无线链路接收的数据来调整耦合到无线便携式存储设备的第一天线阵列的波束形成参数和耦合到无线发射机和/或无线接收机的第二天线阵列。 无线便携式存储器和无线发射器和/或无线接收器可以经由第一天线阵列和第二天线阵列交换数据。 可以建立辅助无线链路来传送用于微波通信链路的建立数据。 辅助无线链路可以通过蓝牙和/或WAN协议建立。
    • 87. 发明授权
    • Mobile communication device with low power receiver for signal detection
    • 具有低功率接收机的移动通信设备用于信号检测
    • US08055313B2
    • 2011-11-08
    • US12559617
    • 2009-09-15
    • Arya BehzadAhmadreza Rofougaran
    • Arya BehzadAhmadreza Rofougaran
    • H04B1/38
    • H04W52/0261H04W52/0225Y02D70/1222Y02D70/1224Y02D70/142Y02D70/144Y02D70/162Y02D70/168
    • A mobile communication device with a low power receiver for signal detection and a method for utilizing a low power receiver for signal detection in a mobile communication device. Various aspects of the present invention comprise a first receiver module adapted to operate in a sleep mode. The first receiver module may also be adapted to receive a communication signal utilizing a first amount of power, where the communication signal is characterized by a first set of signal characteristics. A second receiver module may be adapted to receive a communication signal characterized by the first set of signal characteristics. The second receiver module may be adapted to receive a communication signal utilizing a second amount of power that is less than the first amount of power. A communication signal received by the second receiver module may be analyzed to determine a mode in which to operate the first receiver module.
    • 一种具有用于信号检测的低功率接收器的移动通信设备和用于在移动通信设备中利用低功率接收机进行信号检测的方法。 本发明的各个方面包括适于以睡眠模式操作的第一接收器模块。 第一接收机模块还可以适于使用第一数量的功率来接收通信信号,其中通信信号由第一组信号特征表征。 第二接收器模块可以适于接收以第一组信号特征为特征的通信信号。 第二接收机模块可以适于使用小于第一功率量的第二数量的功率来接收通信信号。 可以分析由第二接收机模块接收的通信信号,以确定操作第一接收机模块的模式。
    • 89. 发明申请
    • METHOD AND SYSTEM FOR VARIABLE RESOLUTION DATA CONVERSION IN A RECEIVER
    • 接收机中可变分辨率数据转换的方法和系统
    • US20110215958A1
    • 2011-09-08
    • US13108686
    • 2011-05-16
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H03M1/12
    • H03M1/186H03M1/007
    • A received plurality of signals may be filtered to select an in-band signal and/or an out-of-band. A signal strength of the selected signal(s) may be measured. A resolution of an analog-to-digital converter may be controlled based on the measured signal strength(s). The selected in-band signal may be converted to a digital representation via the analog-to-digital converter. The resolution may be decreased when the strength of the in-band signal is higher, and increased when the strength of the in-band signal is lower. The resolution may be increased when the strength of the out-of-band signal is higher, and decreased when the strength of the out-of-band signal is lower. A signal-to-noise ratio and/or dynamic range of the selected signal(s) may be determined based on the measured signal strength(s), and may be utilized to adjust the resolution of the analog-to-digital converter.
    • 可以对接收到的多个信号进行滤波以选择带内信号和/或带外。 可以测量所选信号的信号强度。 可以基于测量的信号强度来控制模数转换器的分辨率。 所选择的带内信号可以经由模拟 - 数字转换器转换成数字表示。 当带内信号的强度较高时,分辨率可能会降低,并且当带内信号的强度较低时,分辨率可能会降低。 当带外信号的强度较高时,分辨率可能会增加,当带外信号的强度较低时,分辨率可能会下降。 可以基于所测量的信号强度来确定所选信号的信噪比和/或动态范围,并且可以用于调整模数转换器的分辨率。
    • 90. 发明申请
    • METHOD AND SYSTEM FOR EFFICIENT TRANSMISSION AND RECEPTION OF RF ENERGY IN MIMO SYSTEMS USING POLAR MODULATION AND DIRECT DIGITAL FREQUENCY SYNTHESIS
    • 使用极地调制和直接数字频率合成的MIMO系统中有效传输和接收RF能量的方法和系统
    • US20110206149A1
    • 2011-08-25
    • US13099487
    • 2011-05-03
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H04L27/28
    • H04L27/361H04B7/0413Y02D70/142Y02D70/444
    • A first oscillating signal may be generated via a first direct digital frequency synthesizer of a communication device. One or more second oscillating signals may be generated via one or more second direct digital frequency synthesizers of the communication device. Signals received via a plurality of antennas may be processed utilizing the first oscillating signal. Signals to be transmitted via the plurality of antennas may be processed utilizing the first oscillating signal and the one or more second oscillating signals. The communication device may comprise a plurality of receive channels, a plurality of transmit channels, and a multiplexer. The first oscillating signal may be coupled, via the multiplexer, to the plurality of receive paths and one of the transmit paths. During time intervals in which the communication device is configured to receive signals via the plurality of antennas, the multiplexer may route the first oscillating signal to the first one or more direct digital frequency synthesizers.
    • 可以经由通信设备的第一直接数字频率合成器产生第一振荡信号。 可以经由通信设备的一个或多个第二直接数字频率合成器产生一个或多个第二振荡信号。 可以利用第一振荡信号来处理经由多个天线接收的信号。 可以使用第一振荡信号和一个或多个第二振荡信号来处理要经由多个天线发射的信号。 通信设备可以包括多个接收信道,多个发射信道和多路复用器。 第一振荡信号可以经由多路复用器耦合到多个接收路径和一个发送路径。 在通信设备被配置为经由多个天线接收信号的时间间隔期间,多路复用器可以将第一振荡信号路由到第一个或多个直接数字频率合成器。