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    • 71. 发明授权
    • Method and system for dynamically tuning and calibrating an antenna using antenna hopping
    • 使用天线跳变动态调整和校准天线的方法和系统
    • US07689188B2
    • 2010-03-30
    • US11536682
    • 2006-09-29
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H04B1/16
    • H04B1/713H04B1/18
    • Methods and systems for dynamically tuning and calibrating an antenna using antenna hopping are disclosed. Aspects of one method may include dynamically tuning a mobile terminal antenna, to antenna hop to a plurality of different center frequencies to receive RF signals. The antenna hopping may be slow antenna hopping (SAH) or fast antenna hopping (FAH). In FAH, received signals for a channel at each of the center frequencies may be aggregated. A hopping rate in FAH may be greater than twice a highest baseband signal frequency of a desired channel. In SAH, the mobile terminal antenna may hop to determined center frequencies with adequate signals for the desired channel. Signal adequacy of the desired channel at a center frequency may be made by, for example, measuring received signal strength for the desired channel and/or a bit error rate for the desired 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。 一种方法的方面可以包括将移动终端天线动态地调谐到天线跳到多个不同的中心频率以接收RF信号。 天线跳频可能是慢天线跳频(SAH)或快速天线跳频(FAH)。 在FAH中,可以聚合在每个中心频率处的信道的接收信号。 FAH中的跳频可能大于期望信道的最高基带信号频率的两倍。 在SAH中,移动终端天线可以跳转到具有所需信道的足够信号的确定中心频率。 可以通过例如测量所需信道的接收信号强度和/或所需信道的误码率来进行中心频率处所需信道的信号充分性。
    • 72. 发明授权
    • Method and system for a fast-switching phase-locked loop using a direct digital frequency synthesizer
    • 使用直接数字频率合成器的快速切换锁相环的方法和系统
    • US07646824B2
    • 2010-01-12
    • US11680253
    • 2007-02-28
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H03K7/06
    • H04L27/365H03B21/00
    • Aspects of a method and system for a fast-switching Phase-Locked Loop using a Direct Digital Frequency synthesizer may include generating a second signal from a first signal by: frequency translating an inphase component of the first signal utilizing a filtered fast-switching oscillating signal generated using at least a direct digital frequency synthesizer (DDFS), and frequency translating a corresponding quadrature component of the first signal utilizing a phase-shifted version of the generated and filtered fast-switching oscillating signal. The inphase and quadrature components of the first signal may be multiplied with the filtered fast-switching oscillating signal and a phase-shifted version of the filtered fast-switching oscillating signal, respectively. The filtered fast-switching oscillating signal may be obtained by removing at least one frequency-sum term of the fast-switching oscillating signal, where the fast-switching signal oscillating signal may be generated from a signal generated by the DDFS that may be multiplied with an oscillating reference signal.
    • 用于使用直接数字频率合成器的快速切换锁相环的方法和系统的方面可以包括:通过以下操作来产生来自第一信号的第二信号:使用经滤波的快速切换振荡信号来频率转换第一信号的同相分量 使用至少直接数字频率合成器(DDFS)生成,以及利用生成和滤波的快速切换振荡信号的相移版本对第一信号的相应正交分量进行频率转换。 第一信号的同相和正交分量可以分别与滤波的快速切换振荡信号和滤波的快速切换振荡信号的相移版本相乘。 滤波后的快速切换振荡信号可以通过去除快速切换振荡信号的至少一个频率和项来获得,其中快速切换信号振荡信号可以由DDFS产生的信号产生,该信号可以与 振荡参考信号。
    • 73. 发明申请
    • MOBILE COMMUNICATION DEVICE WITH LOW POWER RECEIVER FOR SIGNAL DETECTION
    • 具有用于信号检测的低功率接收机的移动通信设备
    • US20100003935A1
    • 2010-01-07
    • US12559617
    • 2009-09-15
    • Arya BehzadAhmadreza Rofougaran
    • Arya BehzadAhmadreza Rofougaran
    • H04B7/08
    • 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。
    • 74. 发明申请
    • METHOD AND SYSTEM FOR INTRA-CHIP WAVEGUIDE COMMUNICATION
    • 用于芯片波形通信的方法和系统
    • US20090318106A1
    • 2009-12-24
    • US12191553
    • 2008-08-14
    • Ahmadreza RofougaranMaryam Rofougaran
    • Ahmadreza RofougaranMaryam Rofougaran
    • H04B1/26
    • H01P3/026
    • Methods and systems for intra-chip waveguide communication are disclosed and may include configuring one or more waveguides in an integrated circuit and communicating one or more signals between blocks within the integrated circuit via the one or more waveguides. The one or more waveguides may be configured via switches in the integrated circuit by adjusting a length of the one or more waveguides. The one or more signals may include a microwave signal and a low frequency control signal that configures the microwave signal. The low frequency control signal may include a digital signal. The one or more waveguides may include metal layers deposited on the integrated circuit or within the integrated circuit. The one or more waveguides may include semiconductor layers deposited on the integrated circuit or embedded within the integrated circuit.
    • 公开了用于片内波导通信的方法和系统,并且可以包括在集成电路中配置一个或多个波导并经由一个或多个波导在集成电路内的块之间传送一个或多个信号。 一个或多个波导可以通过调整一个或多个波导的长度来经由集成电路中的开关来配置。 一个或多个信号可以包括微波信号和配置微波信号的低频控制信号。 低频控制信号可以包括数字信号。 一个或多个波导可以包括沉积在集成电路上或集成电路内的金属层。 一个或多个波导可以包括沉积在集成电路上或嵌入在集成电路内的半导体层。
    • 75. 发明申请
    • METHOD AND SYSTEM FOR INTRA-PRINTED CIRCUIT BOARD COMMUNICATION VIA WAVEGUIDES
    • 用于内部印刷电路板通信的方法和系统通过波形
    • US20090318105A1
    • 2009-12-24
    • US12191497
    • 2008-08-14
    • Ahmadreza RofougaranMaryam Rofougaran
    • Ahmadreza RofougaranMaryam Rofougaran
    • H04B1/26
    • H05K1/0237H05K1/181H05K2201/10674
    • Methods and systems for intra-printed circuit board communication via waveguides are disclosed and may include communicating one or more signals between or among a plurality of integrated circuits via one or more waveguides integrated on a printed circuit board. The integrated circuits may be bonded to the printed circuit board. The waveguides may be configured via switches integrated within each of the plurality of integrated circuits. The one or more signals may include microwave signals. The one or more waveguides may be configured for communicating microwave signals with a frequency of 60 GHz or greater. The communication of the one or more signals may be configured via a low frequency control signal, which may include a digital signal. The one or more waveguides may include metal and/or semiconductor layers deposited on and/or embedded within the printed circuit board.
    • 公开了用于通过波导进行印刷电路板通信的方法和系统,并且可以包括通过集成在印刷电路板上的一个或多个波导在多个集成电路之间或之间传送一个或多个信号。 集成电路可以结合到印刷电路板。 可以通过集成在多个集成电路的每一个内的开关配置波导。 一个或多个信号可以包括微波信号。 一个或多个波导可以被配置为用于传送频率为60GHz或更大的微波信号。 一个或多个信号的通信可以经由可以包括数字信号的低频控制信号来配置。 一个或多个波导可以包括沉积在印刷电路板上和/或嵌入在印刷电路板内的金属和/或半导体层。
    • 76. 发明授权
    • Method and system for blocker attenuation using multiple receive antennas
    • 使用多个接收天线的阻塞衰减的方法和系统
    • US07634246B2
    • 2009-12-15
    • US11536688
    • 2006-09-29
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H04B1/10
    • H04B1/126H04B1/109H04B7/0842
    • Methods and systems for blocker attenuation using multiple receive antennas are disclosed. Aspects of one method may include receiving wideband signals multi-antenna receiver. The receiver may process received signals that may comprise blocking signals received via the multiple antennas. The blocker received by a first antenna may be suppressed, at least in part, by combining processed signals received by a first antenna with processed signals received by a second antenna. The combining may comprise, for example, adding the two processed signals at either the RF or IF frequencies. The processing of the signals whose blocker is to be suppressed may be gain adjustment. The processing of the other signals used to suppress the blocker of the first antenna may be gain and/or phase adjustment. Accordingly, a blocker received by any antenna may be suppressed, at least in part, by using processed signals received by another antenna.
    • 公开了使用多个接收天线的阻塞衰减的方法和系统。 一种方法的方面可以包括接收宽带信号多天线接收机。 接收机可以处理可以包括阻塞经由多个天线接收的信号的接收信号。 可以至少部分地通过将由第一天线接收的处理信号与由第二天线接收的处理信号组合来抑制由第一天线接收的阻塞器。 组合可以包括例如在RF或IF频率处添加两个经处理的信号。 抑制阻滞器的信号的处理可以是增益调整。 用于抑制第一天线的阻挡器的其它信号的处理可以是增益和/或相位调整。 因此,可以至少部分地通过使用由另一个天线接收的处理信号来抑制由任何天线接收的阻挡器。
    • 77. 发明申请
    • Method And System For Communicating Via A Spatial Multilink Repeater
    • 通过空间多重中继器进行通信的方法和系统
    • US20090278596A1
    • 2009-11-12
    • US12116581
    • 2008-05-07
    • Ahmadreza RofougaranMaryam Rofougaran
    • Ahmadreza RofougaranMaryam Rofougaran
    • H03D3/00
    • H04L27/10H04B7/15542
    • Aspects of a method and system for communicating via a spatial multilink repeater are provided. In this regard, a received signal may be frequency shifted to generate a plurality of repeated signals, wherein each repeated signal may be shifted by a different frequency with respect to the received signal. Each repeated signal may comprise one or more signal components and a phase and/or amplitude of each of the components may be controlled to control a directivity of the repeated signals. Each of the repeated signals may be generated by quadrature down-converting said received signal by mixing the received signal with a first LO signal pair, up-converting the down-converted signal by mixing it with a second LO signal pair, and adding or subtracting an in-phase portion and a quadrature-phase portion of the up-converted signal.
    • 提供了一种通过空中多链路中继器进行通信的方法和系统的方面。 在这点上,接收信号可以被频移以产生多个重复的信号,其中每个重复的信号可以相对于接收的信号被移位不同的频率。 每个重复信号可以包括一个或多个信号分量,并且可以控制每个分量的相位和/或幅度以控制重复信号的方向性。 可以通过将接收信号与第一LO信号对混合来对所接收的信号进行正交降频转换来产生每个重复信号,通过将下变频信号与第二LO信号对进行混合,将下变频信号进行上变频,以及加法或减法 上变频信号的同相部分和正交相位部分。
    • 78. 发明授权
    • Method and system for polar modulating QAM signals with discontinuous phase
    • 具有不连续相极化调制QAM信号的方法和系统
    • US07602242B2
    • 2009-10-13
    • US11873567
    • 2007-10-17
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H03G9/00
    • H04L27/361
    • Aspects of a method and system for polar modulating QAM signals with discontinuous phase 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 and an amplitude offset gain. A gain of one or more of the plurality of amplifiers may be adjusted to set the coarse amplitude gain, and a gain of one or more remaining ones of the plurality of amplifiers may be adjusted to set the amplitude offset gain. The setting of the coarse amplitude gain and/or said amplitude offset gain may be adjusted dynamically and/or adaptively. The signal may be generated by phase-modulation of a radio-frequency carrier. The combined gain of the plurality of amplifiers may be controlled based on a desired amplitude modulation. The plurality of amplifiers may be integrated within an integrated circuit (IC) or chip.
    • 用于极化调制具有不连续相位的QAM信号的方法和系统的方面可以包括经由多个放大器放大信号,使得多个放大器的组合增益包括粗调幅度增益和幅度偏移增益。 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,并且可以调整多个放大器中的一个或多个剩余的放大器的增益以设置幅度偏移增益。 可以动态地和/或自适应地调整粗调幅度增益和/或所述幅度偏移增益的设置。 信号可以通过射频载波的相位调制来产生。 可以基于期望的幅度调制来控制多个放大器的组合增益。 多个放大器可以集成在集成电路(IC)或芯片内。
    • 79. 发明申请
    • METHOD AND SYSTEM FOR COMMUNICATING VIA A FREQUENCY SHIFTING REPEATER
    • 用于通过频率转换器进行通信的方法和系统
    • US20090247109A1
    • 2009-10-01
    • US12057780
    • 2008-03-28
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H04B1/26
    • H04B7/155
    • Aspects of a method and system for communicating via a frequency shifting repeater are provided. In this regard, a signal having a first frequency may be received, the received signal may be quadrature down-converted by mixing it with a pair of phase-quadrature local oscillator (LO) signals, the down-converted signals may be up-converted by mixing them with the LO signals, and the up-converted signals may be added or subtracted to generate a signal, having a second frequency, for transmission. In this manner, a wireless communication range may be extended by repeating the received signal on a different frequency than at which it was received. The frequency of the LO signals may be based on a desired difference between the first and second frequencies, a frequency at which a target device receives signals, and/or noise present.
    • 提供了一种用于通过频移中继器进行通信的方法和系统的方面。 在这方面,可以接收具有第一频率的信号,通过将接收信号与一对相位正交本地振荡器(LO)信号进行混合,可以对接收信号进行正交降频转换,下变频信号可以被上变频 通过将它们与LO信号混合,并且上转换的信号可以被相加或相减以产生具有第二频率的用于传输的信号。 以这种方式,可以通过以与接收到的信号不同的频率重复接收信号来扩展无线通信范围。 LO信号的频率可以基于第一和第二频率之间的期望差异,目标设备接收信号的频率和/或存在噪声。
    • 80. 发明申请
    • METHOD AND SYSTEM FOR RECONFIGURABLE DEVICES FOR MULTI-FREQUENCY COEXISTENCE
    • 用于多频共享的可重新配置的方法和系统
    • US20090243779A1
    • 2009-10-01
    • US12056475
    • 2008-03-27
    • Ahmadreza Rofougaran
    • Ahmadreza Rofougaran
    • H01F5/00H01Q7/00
    • H01Q7/00H01F17/0006H01L2223/6677H01L2224/16225H01L2224/32225H01L2224/73204H01L2924/15321H01L2924/00
    • Aspects of a method and system for reconfigurable devices for multi-frequency coexistence are provided. In this regard, an IC may be configured based on a frequency of signals processed by the IC. In instances that the IC may process signals of a first frequency, the IC may be configured such that a loop communicatively coupled to the integrated circuit may function as an inductor. In instances that the IC may process signals of a second frequency, the IC may be configured such that the loop may function as an antenna for transmitting and/or receiving the signals. The loop may be within and/or on the IC and/or a package such as a multilayer package to which the IC may be bonded. The loop may be fabricated with stripline and/or microstrip transmission line. In instances that the loop may function as an inductor, the loop may be communicatively coupled as part of a VCO tank circuit.
    • 提供了用于多频率共存的可重新配置设备的方法和系统的方面。 在这方面,可以基于由IC处理的信号的频率来配置IC。 在IC可以处理第一频率的信号的情况下,IC可以被配置为使得通信地耦合到集成电路的环路可以用作电感器。 在IC可以处理第二频率的信号的情况下,IC可以被配置为使得环路可以用作用于发送和/或接收信号的天线。 环路可以在IC和/或封装内和/或封装内,例如可与IC结合的多层封装。 环路可以用带状线和/或微带传输线制造。 在环路可以用作电感器的情况下,环路可以作为VCO谐振电路的一部分通信耦合。