公开(公告)号：US20080139145A1

公开(公告)日：2008-06-12

申请号：US11618832

申请日：2006-12-31

申请人： Arya Behzad

发明人： Arya Behzad

IPC分类号： H01Q11/12

CPC分类号： H03G3/3042 ,  H03F3/45183 ,  H04B17/13 ,  H04B2001/0416 ,  H04W52/52

摘要： Methods and systems for level detector calibration are disclosed and may comprise calibrating a level detector integrated on-chip to eliminate an associated zero input offset voltage utilizing a replica bias circuit with no input ac voltage at the level detector or the replica bias circuit. The offset voltages of the level detector and the replica bias circuit may be combined to eliminate the associated zero input offset voltage of the level detector. The output signal may be generated by a difference of output signals from the level detector and the replica bias circuit. The level detector and the replica bias circuit may be biased utilizing a similar bias voltage. A plurality of known input voltages may be utilized to generate a corresponding plurality of output voltages of the level detector, generating a corrected transfer function that may be used to accurately set a transmitter power level.

摘要翻译： 公开了用于电平检测器校准的方法和系统，并且可以包括校准集成在片上的电平检测器，以利用在电平检测器或复制偏置电路处没有输入交流电压的复制偏置电路来消除相关的零输入偏移电压。 可以组合电平检测器和复制偏置电路的偏移电压以消除电平检测器的相关联的零输入偏移电压。 输出信号可以由来自电平检测器和复制偏置电路的输出信号的差产生。 电平检测器和复制偏置电路可以利用类似的偏置电压来偏置。 可以利用多个已知的输入电压来产生电平检测器的对应的多个输出电压，产生校正的传递函数，该传递函数可用于精确地设定发射机功率电平。

公开(公告)号：US20080139132A1

公开(公告)日：2008-06-12

申请号：US11762573

申请日：2007-06-13

申请人： Meng-An Pan ,  Ali Afsahi ,  Vikram Magoon ,  Arya Behzad

发明人： Meng-An Pan ,  Ali Afsahi ,  Vikram Magoon ,  Arya Behzad

IPC分类号： H04B1/02

CPC分类号： H04B1/02 ,  H03F1/32 ,  H03F3/24 ,  H03F2200/168 ,  H03F2200/321 ,  H03F2200/336 ,  H04B1/005 ,  H04B2001/0408

摘要： Various aspect of a system for a linearized transmitter including a power amplifier may include at least one transconductance amplifier that enables generation of a single analog quadrature signal. Transmitter mixers may enable generation of a plurality of upconverted RF signals in a corresponding plurality of RF processing chains based on the generated single analog quadrature signal. In various embodiments of the invention, a gain stage, for example gain stage, may also be referred to as an RF processing chain. Power amplifier circuit may enable generation of a corresponding plurality of RF output signals within a wireless communication system based on the generated plurality of upconverted RF signals.

摘要翻译： 用于包括功率放大器的线性化发射机的系统的各个方面可以包括能够产生单个模拟正交信号的至少一个跨导放大器。 发射机混频器可以使得能够基于所生成的单个模拟正交信号在对应的多个RF处理链中产生多个上变频RF信号。 在本发明的各种实施例中，增益级，例如增益级，也可以被称为RF处理链。 功率放大器电路可以使得能够基于所生成的多个上变频RF信号在无线通信系统内产生相应的多个RF输出信号。

公开(公告)号：US20080137566A1

公开(公告)日：2008-06-12

申请号：US11618848

申请日：2006-12-31

申请人： Bojko Marholev ,  Arya Behzad ,  Meng-An Pan ,  Seema Anand

发明人： Bojko Marholev ,  Arya Behzad ,  Meng-An Pan ,  Seema Anand

IPC分类号： H04B7/00

CPC分类号： H04B1/406 ,  H04B2001/0416 ,  H04W84/12 ,  H04W84/18 ,  H04W88/06 ,  Y02D70/122 ,  Y02D70/124 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/168 ,  Y02D70/40

摘要： Aspects of a method and system for a shared high-power transmit path for a multi-protocol transceiver are disclosed. Aspects of one method may include sharing a first power amplifier with a WLAN signal and a Bluetooth signal. The first power amplifier may amplify the WLAN signal and/or the Bluetooth signal simultaneously, or individually. A second power amplifier may be used to amplify the Bluetooth signal, where the first power amplifier may have a higher gain than the second power amplifier. Power may be reduced to the second power amplifier in instances where the first power amplifier is used to amplify the Bluetooth signal. The Bluetooth signal may be communicated to the first power amplifier via a switching circuit, which may comprise one or more switching stages.

摘要翻译： 公开了用于多协议收发器的共享高功率发射路径的方法和系统的方面。 一种方法的方面可以包括共享具有WLAN信号和蓝牙信号的第一功率放大器。 第一功率放大器可以同时或单独地放大WLAN信号和/或蓝牙信号。 可以使用第二功率放大器来放大蓝牙信号，其中第一功率放大器可以具有比第二功率放大器更高的增益。 在使用第一功率放大器来放大蓝牙信号的情况下，功率可以减小到第二功率放大器。 蓝牙信号可以经由开关电路传送到第一功率放大器，开关电路可以包括一个或多个开关级。

公开(公告)号：US20080136503A1

公开(公告)日：2008-06-12

申请号：US11618900

申请日：2006-12-31

申请人： Stephen Chi-Wang Au ,  Arya Behzad ,  Paul Chang

发明人： Stephen Chi-Wang Au ,  Arya Behzad ,  Paul Chang

IPC分类号： G05F3/02

CPC分类号： H03F3/45475 ,  H03F2203/45048

摘要： Certain aspects of a method and system for a process sensor to compensate SoC parameters in the presence of IC process manufacturing variations are disclosed. Aspects of one method may include determining an amount of process variation associated with at least one transistor within a single integrated circuit. The determined amount of process variation may be compensated by utilizing a process dependent current, a bandgap current, and a current associated with a present temperature of the transistor. The process dependent current, the bandgap current and the current associated with the present temperature of the transistor may be combined to generate an output current. A voltage generated across a variable resistor may be determined based on the generated output current.

摘要翻译： 公开了用于在存在IC工艺制造变化的情况下补偿SoC参数的工艺传感器的方法和系统的某些方面。 一种方法的方面可以包括确定与单个集成电路内的至少一个晶体管相关联的工艺变化量。 可以通过利用与工艺相关的电流，带隙电流和与晶体管的当前温度相关联的电流来补偿确定的工艺变化量。 过程相关电流，带隙电流和与晶体管的当前温度相关联的电流可以被组合以产生输出电流。 可以基于产生的输出电流来确定可变电阻器两端产生的电压。

公开(公告)号：US20080136468A1

公开(公告)日：2008-06-12

申请号：US11618655

申请日：2006-12-29

申请人： Dandan Li ,  Arya Behzad

发明人： Dandan Li ,  Arya Behzad

IPC分类号： H03B19/00

CPC分类号： H03D13/004 ,  H03L7/093 ,  H03L7/1976

摘要： Aspects of a method and system for signal processing are disclosed and may include using a frequency doubler to double the frequency of a reference signal utilized by a phase-frequency detector (PFD) in a fractional-N phase-locked-loop (PLL) synthesizer. Detecting and correcting a digital reference signal connected to the input of the frequency doubler. The digital reference signal may be generated by amplifying the difference between a low slew-rate reference signal and a reference voltage through a comparator. The reference voltage signal may be generated based on the detected duty-cycle of the digital reference signal. The duty-cycle of the digital reference signal may be adjusted by varying the generated reference voltage signal. The reference voltage may be generated by using difference of DC level of the digital reference signal and half rail. The reference voltage signal may be generated using a voltage digital-to-analog converter (DAC).

摘要翻译： 公开了用于信号处理的方法和系统的方面，并且可以包括使用倍频器将分频N锁相环（PLL）合成器中的相位 - 频率检测器（PFD）所使用的参考信号的频率加倍 。 检测和校正连接到倍频器输入端的数字参考信号。 数字参考信号可以通过比较器放大低压摆率参考信号和参考电压之间的差来产生。 可以基于检测到的数字参考信号的占空比来产生参考电压信号。 可以通过改变所产生的参考电压信号来调整数字参考信号的占空比。 可以通过使用数字参考信号和半导轨的直流电平的差异来产生参考电压。 参考电压信号可以使用电压数模转换器（DAC）产生。

公开(公告)号：US07333790B2

公开(公告)日：2008-02-19

申请号：US11102515

申请日：2005-04-08

申请人： Ali Afsahi ,  Arya Behzad

发明人： Ali Afsahi ,  Arya Behzad

IPC分类号： H04B1/26

CPC分类号： H04B7/084 ,  H04B7/10

摘要： A radio frequency (RF) phase shifter having an RC-CR circuit that includes a first capacitor having a first capacitor node and a second capacitor node and a first resistor coupled between the first capacitor node and a ground. The RC-CR circuit also includes a second resistor having a first resistor node and a second resistor node and a second capacitor coupled between the first resistor node and the ground. The RF phase shifter generates arbitrary phase shift by using a scheme of adding two perpendicular vectors with variable gains (or amplitudes).

摘要翻译： 一种具有RC-CR电路的射频（RF）移相器，其包括具有第一电容器节点和第二电容器节点的第一电容器和耦合在第一电容器节点和地之间的第一电阻器。 RC-CR电路还包括具有第一电阻器节点和第二电阻器节点的第二电阻器，以及耦合在第一电阻器节点和地之间的第二电容器。 RF移相器通过使用添加具有可变增益（或幅度）的两个垂直向量的方案来产生任意的相移。

公开(公告)号：US20070243848A1

公开(公告)日：2007-10-18

申请号：US11820359

申请日：2007-06-19

申请人： Arya Behzad

发明人： Arya Behzad

IPC分类号： H04B1/38

CPC分类号： H03D7/163 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1483 ,  H03D2200/0043 ,  H03D2200/0084 ,  H04B1/18 ,  H04B1/28 ,  H04B1/40

摘要： A single chip radio transceiver includes circuitry that enables received wideband RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to wideband RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry includes a low noise amplifier, automatic frequency control circuitry for aligning a local oscillation frequency with the frequency of the received RF signals, signal power measuring circuitry for measuring the signal to signal and power ratio and for adjusting frontal and rear amplification stages accordingly, and finally, filtering circuitry to filter high and low frequency interfering signals including DC offset. The circuitry further includes a multi-stage mixer that produces current signal outputs from each mixing stage to a subsequent stage thereby avoiding a need for intermediate transconductance and output stages to convert between current signals and voltage signals.

摘要翻译： 单芯片无线电收发器包括使接收的宽带RF信号下变频到基带频率的电路，并且基带信号在传输之前被上变频到宽带RF信号，而不需要转换到中频。 该电路包括一个低噪声放大器，用于使本地振荡频率与接收到的RF信号的频率对准的自动频率控制电路，用于测量信号与信号和功率比的信号功率测量电路，以及相应地调整正面和后置放大级， 最后，滤波电路来滤除高频和低频干扰信号，包括直流偏移。 该电路还包括多级混频器，其从每个混频级产生到后一级的电流信号输出，从而避免需要中间跨导和输出级以在电流信号和电压信号之间转换。

公开(公告)号：US20070207751A1

公开(公告)日：2007-09-06

申请号：US11711719

申请日：2007-02-28

申请人： Arya Behzad ,  Prasanna Desai ,  Brima Ibrahim ,  Mark Gonikberg ,  Thomas Varghese

发明人： Arya Behzad ,  Prasanna Desai ,  Brima Ibrahim ,  Mark Gonikberg ,  Thomas Varghese

IPC分类号： H04B7/08

CPC分类号： H04B1/406 ,  H04B1/18

摘要： A radio receiver is described that processes multiple wireless standards using a single antenna according to embodiments of the invention. The radio receiver includes a single antenna, and a low noise amplifier that is connected to the antenna, without an intervening power divider or power splitter. The output of the low noise amplifier feeds multiple wireless receivers in a parallel arrangement that are operating according to different communications standards, including for example a Bluetooth receiver, and a WLAN 802.11 receiver. Additional wireless standards and their corresponding receivers could be added as well. The input impedance of the low noise amplifier defines the impedance seen by the antenna, regardless of which operational standard is actually in use. Since the input impedance of the low noise amplifier is substantially independent of whether the Bluetooth or WLAN paths are ON or OFF, simultaneous operation can be accomplished.

摘要翻译： 描述了根据本发明的实施例的使用单个天线处理多个无线标准的无线电接收机。 无线电接收机包括单个天线和连接到天线的低噪声放大器，而没有中间的功率分配器或功率分配器。 低噪声放大器的输出以并行布置馈送多个无线接收器，该并行装置根据不同的通信标准（例如蓝芽接收机）和WLAN 802.11接收机进行操作。 还可以添加附加的无线标准及其对应的接收器。 低噪声放大器的输入阻抗定义天线所看到的阻抗，无论实际使用哪个操作标准。 由于低噪声放大器的输入阻抗基本上与蓝牙或WLAN路径是ON还是OFF无关，所以可以实现同时的操作。

公开(公告)号：US20070142002A1

公开(公告)日：2007-06-21

申请号：US11376532

申请日：2006-03-15

申请人： Ahmadreza Rofougaran ,  Arya Behzad

发明人： Ahmadreza Rofougaran ,  Arya Behzad

IPC分类号： H04B1/04

CPC分类号： H04W88/06 ,  H04W72/1215

摘要： A system and method providing concurrent multimode communication through multimode signal multiplexing. Various aspects of the present invention may comprise, during a first time period, transmitting a first portion of a first communication in a first communication mode in a serial wireless transmission stream. During a second time period after the first time period, a first portion of a second communication may be transmitted in a second communication mode in the serial wireless transmission stream. Also, during a third time period after the second time period, a second portion of the first communication may be transmitted in the first communication mode in the serial wireless transmission stream. In an exemplary scenario, prior to communicating various communications, transmission time may be allocated between the first and second communication modes. In another exemplary scenario, transmission may be switched between a plurality of communication modes in response to detected communication conditions.

摘要翻译： 一种通过多模信号复用提供并发多模通信的系统和方法。 在第一时间段期间，本发明的各个方面可以包括在串行无线传输流中以第一通信模式发送第一通信的第一部分。 在第一时间段之后的第二时间段期间，可以在串行无线传输流中以第二通信模式发送第二通信的第一部分。 此外，在第二时间段之后的第三时间段期间，可以在串行无线传输流中以第一通信模式发送第一通信的第二部分。 在示例性场景中，在传送各种通信之前，可以在第一和第二通信模式之间分配传输时间。 在另一示例性场景中，响应于检测到的通信条件，可以在多个通信模式之间切换传输。

公开(公告)号：US20070127590A1

公开(公告)日：2007-06-07

申请号：US11376643

申请日：2006-03-15

申请人： Ahmadreza Rofougaran ,  Arya Behzad

发明人： Ahmadreza Rofougaran ,  Arya Behzad

IPC分类号： H04B15/00

CPC分类号： H04B1/04 ,  H04B1/0075

摘要： A system and method providing signal combining to support multimode communication. Various aspects of the present invention may provide a first input adapted to receive a first baseband signal corresponding to a first communication protocol. A second input may be provided, which is adapted to receive a second baseband signal corresponding to a second communication protocol. A spectral placement module may, for example, be adapted to spectrally shift the first baseband signal. For example, the spectral placement module may be adapted to spectrally shift the first baseband signal to one or more frequency bands substantially distinct from one or more frequency bands associated with the second baseband signal. The spectrally shifted first baseband signal and the second baseband signal, which may also be spectrally shifted, may then be combined to form a composite signal.

摘要翻译： 提供信号组合以支持多模通信的系统和方法。 本发明的各个方面可以提供适于接收对应于第一通信协议的第一基带信号的第一输入。 可以提供第二输入，其适于接收对应于第二通信协议的第二基带信号。 频谱放置模块可以例如适于对第一基带信号进行频谱移位。 例如，频谱放置模块可以适于将第一基带信号光谱地移位到与第二基带信号相关联的一个或多个频带基本不同的一个或多个频带。 然后可将光谱移位的第一基带信号和也可能被频谱移位的第二基带信号组合以形成复合信号。