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    GAIN CONTROL USING A DYNAMICALLY CONFIGURABLE TRANSFORMER
    1.
    发明申请
    GAIN CONTROL USING A DYNAMICALLY CONFIGURABLE TRANSFORMER 有权
    使用动态可配置变压器增益控制

    公开(公告)号：US20090143033A1

    公开(公告)日：2009-06-04

    申请号：US11947269

    申请日：2007-11-29

    申请人： Ahmad Mirzaei ,  John Leete ,  Hooman Darabi

    发明人： Ahmad Mirzaei ,  John Leete ,  Hooman Darabi

    IPC分类号： H04B1/04

    CPC分类号： H04B1/62 ,  H04B1/0458 ,  H04B2001/0416

    摘要： An apparatus comprising: a baseband filter configured to produce a baseband signal utilizing an input signal; a mixer unit configured to produce an intermediate signal utilizing the baseband signal and a local oscillator signal; and a dynamically configurable transformer configured to provide a gain to the intermediate signal, wherein the gain is dynamically configurable.

    摘要翻译： 一种装置，包括：基带滤波器，被配置为利用输入信号产生基带信号; 混频器单元，被配置为使用所述基带信号和本地振荡器信号产生中间信号; 以及被配置为向所述中间信号提供增益的动态可配置变压器，其中所述增益是可动态配置的。

    Gain control using a dynamically configurable transformer
    2.
    发明授权
    Gain control using a dynamically configurable transformer 有权
    使用可动态配置的变压器获得增益控制

    公开(公告)号：US08515368B2

    公开(公告)日：2013-08-20

    申请号：US11947269

    申请日：2007-11-29

    申请人： Ahmad Mirzaei ,  John Leete ,  Hooman Darabi

    发明人： Ahmad Mirzaei ,  John Leete ,  Hooman Darabi

    IPC分类号： H04B1/04

    CPC分类号： H04B1/62 ,  H04B1/0458 ,  H04B2001/0416

    摘要： An apparatus comprising: a baseband filter configured to produce a baseband signal utilizing an input signal; a mixer unit configured to produce an intermediate signal utilizing the baseband signal and a local oscillator signal; and a dynamically configurable transformer configured to provide a gain to the intermediate signal, wherein the gain is dynamically configurable.

    摘要翻译： 一种装置，包括：基带滤波器，被配置为利用输入信号产生基带信号; 混频器单元，被配置为使用所述基带信号和本地振荡器信号产生中间信号; 以及被配置为向所述中间信号提供增益的动态可配置变压器，其中所述增益是可动态配置的。

    Frequency translated filter
    3.
    发明授权
    Frequency translated filter 有权
    频率滤波器

    公开(公告)号：US08301101B2

    公开(公告)日：2012-10-30

    申请号：US12470789

    申请日：2009-05-22

    申请人： Ahmad Mirzaei ,  Hooman Darabi ,  John Leete

    发明人： Ahmad Mirzaei ,  Hooman Darabi ,  John Leete

    IPC分类号： H04B1/18 ,  H04B1/10

    CPC分类号： H04B1/30 ,  H03D7/1458 ,  H03D7/1466 ,  H03H19/004

    摘要： Embodiments of a frequency translated filter (FTF) are presented. An FTF includes a passive mixer and a baseband impedance. The baseband impedance includes a network of one or more passive components (e.g., resistors, inductors, and capacitors) that form a low-Q filter. The passive mixer is configured to translate the baseband impedance to a higher frequency. The translated baseband impedance forms a high-Q filter and is presented at the input of the FTF. The FTF can be fully integrated in CMOS IC technology (or others, e.g., Bipolar, BiCMOS, and SiGe) and applied in wireless receiver systems including GSM, Wideband Code Division Multiple Access (WCDMA), Bluetooth, and wireless LANs (e.g., IEEE 802.11).

    摘要翻译： 提出了频率转换滤波器（FTF）的实施例。 FTF包括无源混频器和基带阻抗。 基带阻抗包括形成低Q滤波器的一个或多个无源组件（例如，电阻器，电感器和电容器）的网络。 无源混频器被配置为将基带阻抗转换到更高的频率。 转换的基带阻抗形成高Q滤波器，并在FTF的输入端呈现。 FTF可以完全集成在CMOS IC技术（或其他，例如双极，BiCMOS和SiGe）中，并且应用于包括GSM，宽带码分多址（WCDMA），蓝牙和无线LAN（例如IEEE）的无线接收机系统中 802.11）。

    Frequency Translated Filter
    4.
    发明申请
    Frequency Translated Filter 有权
    频率转换滤波器

    公开(公告)号：US20100267354A1

    公开(公告)日：2010-10-21

    申请号：US12470789

    申请日：2009-05-22

    申请人： Ahmad Mirzaei ,  Hooman Darabi ,  John Leete

    发明人： Ahmad Mirzaei ,  Hooman Darabi ,  John Leete

    IPC分类号： H04B1/10

    CPC分类号： H04B1/30 ,  H03D7/1458 ,  H03D7/1466 ,  H03H19/004

    摘要： Embodiments of a frequency translated filter (FTF) are presented. An FTF includes a passive mixer and a baseband impedance. The baseband impedance includes a network of one or more passive components (e.g., resistors, inductors, and capacitors) that form a low-Q filter. The passive mixer is configured to translate the baseband impedance to a higher frequency. The translated baseband impedance forms a high-Q filter and is presented at the input of the FTF. The FTF can be fully integrated in CMOS IC technology (or others, e.g., Bipolar, BiCMOS, and SiGe) and applied in wireless receiver systems including GSM, Wideband Code Division Multiple Access (WCDMA), Bluetooth, and wireless LANs (e.g., IEEE 802.11).

    摘要翻译： 提出了频率转换滤波器（FTF）的实施例。 FTF包括无源混频器和基带阻抗。 基带阻抗包括形成低Q滤波器的一个或多个无源组件（例如，电阻器，电感器和电容器）的网络。 无源混频器被配置为将基带阻抗转换到更高的频率。 转换的基带阻抗形成高Q滤波器，并在FTF的输入端呈现。 FTF可以完全集成在CMOS IC技术（或其他，例如双极，BiCMOS和SiGe）中，并且应用于包括GSM，宽带码分多址（WCDMA），蓝牙和无线LAN（例如IEEE）的无线接收机系统中 802.11）。

    Nullification of transmitter noise at receive signal frequency
    5.
    发明授权
    Nullification of transmitter noise at receive signal frequency 有权

    公开(公告)号：US09071317B2

    公开(公告)日：2015-06-30

    申请号：US11825415

    申请日：2007-07-06

    申请人： Ahmad Mirzaei ,  Hooman Darabi

    发明人： Ahmad Mirzaei ,  Hooman Darabi

    IPC分类号： H04L27/00 ,  H04B1/10

    CPC分类号： H04B1/1036

    摘要： According to one exemplary embodiment, a transceiver for nullification of a noise component in a transmitter comprises a noise nullification module loading a selected node in the transmitter. The noise nullification module comprises a mixer that receives inputs from the selected node and a local oscillator, where the mixer is also coupled to a filter such that the noise nullification module presents a low impedance at an approximate frequency of a noise component so as to nullify the noise component. In one embodiment, the noise nullification module results in band-pass filtering of an approximate receive signal frequency so as to nullify a noise component at the receive frequency. In another embodiment, the noise nullification module results in notch filtering of an approximate transmit signal frequency so as to nullify a noise component at a receive signal frequency.

    Highly linear and very low-noise down-conversion mixer for extracting weak signals in the presence of very strong unwanted signals
    6.
    发明授权
    Highly linear and very low-noise down-conversion mixer for extracting weak signals in the presence of very strong unwanted signals 有权
    高线性和非常低噪声的下变频混频器，用于在存在非常强的无用信号的情况下提取弱信号

    公开(公告)号：US08761696B2

    公开(公告)日：2014-06-24

    申请号：US12909472

    申请日：2010-10-21

    申请人： Ahmad Mirzaei ,  Hooman Darabi

    发明人： Ahmad Mirzaei ,  Hooman Darabi

    IPC分类号： H04B1/06 ,  H03C1/62

    CPC分类号： G01F1/32 ,  H04B1/525

    摘要： A method and system for wireless communication is provided and may include mitigating blocker signals in transmitted RF signals in a wireless device including a transmitter front end. The mitigation may include up-converting a baseband signal, mixing the up-converted baseband signal with a feedback signal, and amplifying the mixed up-converted baseband signal and the feedback signal to generate an output signal. The feedback signal may be generated by down-converting the output signal, low-pass filtering the down-converted output signal, and up-converting the filtered down-converted signal for the summing. The blocker signals may correspond to receive frequencies for the wireless device and may be converted to DC via the down-converting. The wireless devices may operate in accordance with at least a CDMA standard. The mixed up-converted baseband signal and the feedback signal may be amplified utilizing a source follower amplifier, where the gain and/or linearity may be configured by varying coupling capacitors.

    摘要翻译： 提供了一种用于无线通信的方法和系统，并且可以包括在包括发射机前端的无线设备中的发射的RF信号中减轻阻塞信号。 缓解可以包括对基带信号进行上变频，将上变换的基带信号与反馈信号混合，以及放大混合上变换的基带信号和反馈信号以产生输出信号。 反馈信号可以通过对输出信号进行下变频，低通滤波下变频输出信号，以及对滤波的下变频信号进行加法转换来产生。 阻塞信号可以对应于无线设备的接收频率，并且可以经由下变频转换为DC。 无线设备可以根据至少CDMA标准进行操作。 混合上变频的基带信号和反馈信号可以利用源极跟随器放大器来放大，其中增益和/或线性可以通过改变耦合电容器来配置。

    Peak detector having extended dynamic range
    7.
    发明授权
    Peak detector having extended dynamic range 有权
    峰值检测器具有扩展的动态范围

    公开(公告)号：US08325848B2

    公开(公告)日：2012-12-04

    申请号：US12804319

    申请日：2010-07-19

    申请人： Ahmad Mirzaei ,  Hooman Darabi

    发明人： Ahmad Mirzaei ,  Hooman Darabi

    IPC分类号： H04L27/00

    CPC分类号： H03K5/1532 ,  G01R21/01 ,  H03G3/3042 ,  H04B1/04

    摘要： According to one embodiment, a peak detector having extended dynamic range comprises a first differential output coupled to a supply voltage of the peak detector by a first load and coupled to ground by first and second switching devices, and a second differential output coupled to the supply voltage by a second load and coupled to ground by third and fourth switching devices. The control terminals of the first, second, third, and fourth switching devices receive a common bias voltage, and the respective first and second control terminals are configured as differential inputs of the peak detector. In some embodiments, corresponding first power terminals of the first and second switching devices share a first common node further shared by the first differential output, and corresponding first power terminals of the third and fourth switching devices share a second common node further shared by the second differential output.

    摘要翻译： 根据一个实施例，具有扩展动态范围的峰值检测器包括第一差分输出，其通过第一负载耦合到峰值检测器的电源电压，并由第一和第二开关器件耦合到地，以及耦合到电源的第二差分输出 电压由第二负载耦合并由第三和第四开关装置耦合到地。 第一，第二，第三和第四开关器件的控制端子接收公共偏置电压，并且相应的第一和第二控制端子被配置为峰值检测器的差分输入。 在一些实施例中，第一和第二开关器件的对应的第一电源端子共享由第一差分输出进一步共享的第一公共节点，并且第三和第四开关器件的对应的第一电源端子共享第二公共节点， 差分输出。

    Method and system for transmitter linearization
    8.
    发明授权
    Method and system for transmitter linearization 失效
    发射机线性化的方法和系统

    公开(公告)号：US08237507B1

    公开(公告)日：2012-08-07

    申请号：US13047444

    申请日：2011-03-14

    申请人： Ahmad Mirzaei ,  Hooman Darabi

    发明人： Ahmad Mirzaei ,  Hooman Darabi

    IPC分类号： H03F3/04

    CPC分类号： H03F1/3205 ,  H03F1/3211 ,  H03F3/211 ,  H03F3/45179 ,  H03F3/72 ,  H03F2200/357 ,  H03F2203/45541 ,  H03F2203/7236

    摘要： Aspects of a method and system for transmitter linearization are provided. A signal may be amplified via one or more circuits comprising a first transistor having a first bias voltage applied to its gate via a resistor, and a second transistor having its source coupled to a first terminal of the resistor, its drain coupled to a second terminal of the resistor, and its gate coupled to a second bias voltage. The signal may be AC-coupled, via one or more capacitors, for example, to the gate of the first transistor. The first bias voltage and the second bias voltage may be such that the first transistor operates in the active region the second transistor operates in the subthreshold region. The effective channel width of the second transistor may be configurable during operation of the one or more circuits.

    摘要翻译： 提供发射机线性化的方法和系统的方面。 信号可以经由一个或多个电路被放大，该电路包括经由电阻器施加到其栅极的第一偏置电压的第一晶体管，以及其源极耦合到电阻器的第一端子的第二晶体管，其漏极耦合到第二端子 并且其栅极耦合到第二偏置电压。 信号可以经由一个或多个电容器例如AC耦合到第一晶体管的栅极。 第一偏置电压和第二偏置电压可以使得第一晶体管在有源区域中工作，第二晶体管在亚阈值区域中工作。 在一个或多个电路的操作期间，第二晶体管的有效沟道宽度可以是可配置的。

    Transmitter architecture enabling efficient preamplification gain control and related method
    10.
    发明申请
    Transmitter architecture enabling efficient preamplification gain control and related method 审中-公开
    发射机架构，可实现高效的前置放大增益控制和相关方法

    公开(公告)号：US20110306391A1

    公开(公告)日：2011-12-15

    申请号：US12802603

    申请日：2010-06-09

    申请人： Ahmad Mirzaei ,  Dmitriy Rozenblit ,  Hooman Darabi ,  Masoud Kahrizi

    发明人： Ahmad Mirzaei ,  Dmitriy Rozenblit ,  Hooman Darabi ,  Masoud Kahrizi

    IPC分类号： H04W52/04

    CPC分类号： H03G3/3042

    摘要： According to one embodiment, a radio frequency (RF) transceiver includes a transmitter enabling efficient preamplification gain control. The RF transceiver comprises a receiver and a power amplifier (PA) for amplifying a transmit signal of the transmitter. The transmitter is configured to provide pre-PA gain control for preamplifying the transmit signal before amplification by the PA, wherein substantially all of the pre-PA gain control is provided when the transmit signal is at a transmit frequency of the transmitter. In one embodiment, the transmitter includes a PA driver comprising in combination: a transconductance amplifier, a current steering block, and an output transformer. Each of the transconductance amplifier, current steering block, and output transformer is configured to contribute a respective variable gain control to the pre-PA gain control provided by the PA driver.

    摘要翻译： 根据一个实施例，射频（RF）收发器包括能够进行有效的前置放大增益控制的发射器。 RF收发器包括用于放大发射机的发射信号的接收机和功率放大器（PA）。 发射器被配置为提供预PA增益控制，用于在PA放大之前对发射信号进行前置放大，其中当发射信号处于发射机的发射频率时，提供基本上所有的预PA增益控制。 在一个实施例中，发射机包括PA驱动器，其包括：跨导放大器，电流转向块和输出变压器。 跨导放大器，电流控制块和输出变压器中的每一个被配置为对由PA驱动器提供的前PA增益控制贡献相应的可变增益控制。