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    CURRENT MIRROR, DEVICES INCLUDING SAME, AND METHODS OF OPERATION THEREOF
    1.
    发明申请
    CURRENT MIRROR, DEVICES INCLUDING SAME, AND METHODS OF OPERATION THEREOF 审中-公开
    电流镜，包括它们的器件及其操作方法

    公开(公告)号：US20100327844A1

    公开(公告)日：2010-12-30

    申请号：US12821049

    申请日：2010-06-22

    申请人： Mahim Ranjan

    发明人： Mahim Ranjan

    IPC分类号： G05F3/16

    CPC分类号： G05F3/262

    摘要： Exemplary embodiments are directed to a current mirror and method of operation thereof. A method may include biasing a first transistor with a voltage at a gate of a second transistor to cause the first transistor to conduct, wherein the first transistor has a source operably coupled to a drain of a third transistor and a drain operably coupled to a gate of the third transistor. The method may also include providing an input current at the drain of the third transistor. Moreover, the method may include decreasing or increasing a voltage at the gate of the first transistor when a voltage at the gate of the second transistor and the drain of the first transistor respectively decreases or increases. Furthermore, the method may include generating an output current in a drain of a fourth transistor having a gate operably coupled to the gate of the third transistor.

    摘要翻译： 示例性实施例涉及电流镜及其操作方法。 一种方法可以包括利用在第二晶体管的栅极处的电压来偏置第一晶体管以引起第一晶体管导通，其中第一晶体管具有可操作地耦合到第三晶体管的漏极的源极和可操作地耦合到栅极的漏极 的第三晶体管。 该方法还可以包括在第三晶体管的漏极处提供输入电流。 此外，当第二晶体管的栅极处的电压和第一晶体管的漏极分别减小或增加时，该方法可以包括降低或增加第一晶体管的栅极处的电压。 此外，该方法可以包括在具有可操作地耦合到第三晶体管的栅极的栅极的第四晶体管的漏极中产生输出电流。

    METHODS AND APPARATUS FOR IMPLEMENTING PHASE ROTATION AT BASEBAND FREQUENCY FOR TRANSMIT DIVERSITY
    2.
    发明申请
    METHODS AND APPARATUS FOR IMPLEMENTING PHASE ROTATION AT BASEBAND FREQUENCY FOR TRANSMIT DIVERSITY 有权
    用于实施基带频率的发射多径相位旋转的方法和装置

    公开(公告)号：US20100029223A1

    公开(公告)日：2010-02-04

    申请号：US12185041

    申请日：2008-08-01

    申请人： Yiwu Tang ,  Christian Holenstein ,  Marco Cassia ,  Mahim Ranjan

    发明人： Yiwu Tang ,  Christian Holenstein ,  Marco Cassia ,  Mahim Ranjan

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0682 ,  H04L1/0618 ,  H04L1/08

    摘要： An apparatus for implementing phase rotation at baseband frequency for transmit diversity may include a primary transmit signal path and a diversity transmit signal path. Both the primary transmit signal path and the diversity transmit signal path may receive a primary transmit signal. A signal selector within the diversity transmit signal path may perform phase rotation with respect to the primary transmit signal while the primary transmit signal is at a baseband frequency, thereby producing a diversity transmit signal.

    摘要翻译： 用于实现用于发射分集的基带频率的相位旋转的装置可以包括主发射信号路径和分集发射信号路径。 主发射信号路径和分集发射信号路径都可以接收主发射信号。 在主发射信号处于基带频率的同时，分集发射信号路径内的信号选择器可以执行相对于主发射信号的相位旋转，从而产生分集发射信号。

    Tunable adaptive filter with variable gain trans-conductance stage
    6.
    发明授权
    Tunable adaptive filter with variable gain trans-conductance stage 有权

    公开(公告)号：US09602079B2

    公开(公告)日：2017-03-21

    申请号：US12612608

    申请日：2009-11-04

    申请人： Mahim Ranjan

    发明人： Mahim Ranjan

    IPC分类号： H04B1/16 ,  H03H11/12

    CPC分类号： H03H11/1291

    摘要： In an exemplary embodiment, the communication device including an analog filter, where a digital signal processor sets the gain of the analog filter and the pole location of the filter simultaneously in order to maintain the filter pole location at a desired value or within a desired range. In further exemplary embodiments, the methodology to simultaneously set the gain and the pole location of the filters.

    TUNABLE ADAPTIVE FILTER WITH VARIABLE GAIN TRANS-CONDUCTANCE STAGE
    7.
    发明申请
    TUNABLE ADAPTIVE FILTER WITH VARIABLE GAIN TRANS-CONDUCTANCE STAGE 有权
    具有可变增益变压器级的自适应滤波器

    公开(公告)号：US20100323651A1

    公开(公告)日：2010-12-23

    申请号：US12612608

    申请日：2009-11-04

    申请人： Mahim Ranjan

    发明人： Mahim Ranjan

    IPC分类号： H04B1/06

    CPC分类号： H03H11/1291

    摘要： In an exemplary embodiment, the communication device including an analog filter, where a digital signal processor sets the gain of the analog filter and the pole location of the filter simultaneously in order to maintain the filter pole location at a desired value or within a desired range. In further exemplary embodiments, the methodology to simultaneously set the gain and the pole location of the filters.

    摘要翻译： 在示例性实施例中，通信设备包括模拟滤波器，其中数字信号处理器同时设置模拟滤波器的增益和滤波器的极点位置，以便将滤波器极位置保持在期望值或期望的范围内 。 在另外的示例性实施例中，同时设置滤波器的增益和极点位置的方法。

    WIRELESS DEVICE WITH FILTERS TO SUPPORT CO-EXISTENCE IN ADJACENT FREQUENCY BANDS
    8.
    发明申请
    WIRELESS DEVICE WITH FILTERS TO SUPPORT CO-EXISTENCE IN ADJACENT FREQUENCY BANDS 审中-公开
    带滤波器的无线设备支持相邻频段中的共存

    公开(公告)号：US20130225107A1

    公开(公告)日：2013-08-29

    申请号：US13584273

    申请日：2012-08-13

    申请人： Mark Vernon Lane ,  Chang-Ho Lee ,  Christian Holenstein ,  Mahim Ranjan ,  Praveen-Kumar Sampath ,  Frederic Bossu ,  Sumit Verma ,  Wesley Alan Sampson

    发明人： Mark Vernon Lane ,  Chang-Ho Lee ,  Christian Holenstein ,  Mahim Ranjan ,  Praveen-Kumar Sampath ,  Frederic Bossu ,  Sumit Verma ,  Wesley Alan Sampson

    IPC分类号： H03G3/20

    CPC分类号： H04B1/0458 ,  H04B1/04 ,  H04B1/0475

    摘要： Techniques for using a narrow filter located before a power amplifier to reduce interference in an adjacent frequency band are disclosed. In an exemplary design, an apparatus (e.g., a wireless device) includes the narrow filter and the power amplifier. The narrow filter is for a first frequency band (e.g., Band 40) and has a first bandwidth that is more narrow than the first frequency band. The narrow filter receives and filters an input radio frequency (RF) signal and provides a filtered RF signal. The power amplifier receives and amplifies the filtered RF signal and provides an amplified RF signal. The apparatus may further include a full filter for the first frequency band and located after the power amplifier. The full filter receives and filters the amplified RF signal and provides an output RF signal when it is selected for use.

    摘要翻译： 公开了使用位于功率放大器之前的窄滤波器来减少相邻频带中的干扰的技术。 在示例性设计中，装置（例如，无线装置）包括窄滤波器和功率放大器。 窄滤波器用于第一频带（例如，频带40），并且具有比第一频带更窄的第一带宽。 窄滤波器接收并过滤输入射频（RF）信号并提供滤波后的RF信号。 功率放大器接收并放大经滤波的RF信号并提供放大的RF信号。 该装置还可以包括用于第一频带并位于功率放大器之后的全滤波器。 全滤波器接收并过滤放大的RF信号，并在选择使用时提供输出RF信号。

    Mixer-transconductance interface
    9.
    发明授权
    Mixer-transconductance interface 有权
    混频器 - 跨导接口

    公开(公告)号：US08432211B2

    公开(公告)日：2013-04-30

    申请号：US12763458

    申请日：2010-04-20

    申请人： Ojas M. Choksi ,  Mahim Ranjan

    发明人： Ojas M. Choksi ,  Mahim Ranjan

    IPC分类号： G06G7/12

    CPC分类号： H03D7/165

    摘要： Techniques for providing an efficient interface between a mixer block and a transconductance (Gm) block. In an exemplary embodiment, the output currents of at least two unit cells of the transconductance block are conductively coupled together, and coupled to the mixer block using a single conductive path. For a differential signal, the conductive path may include two conductive leads. Within the mixer block, the single conductive path may be fanned out to at least two unit cells of the mixer block. At least one Gm unit cell may be selectively enabled or disabled to control the gain setting of the mixer-transconductance block. The techniques may further be applied to transceiver architectures supporting in-phase and quadrature mixing, as well as multi-mode and/or multi-band operation.

    摘要翻译： 在混合器块和跨导（Gm）块之间提供有效接口的技术。 在示例性实施例中，跨导块的至少两个单位单元的输出电流被导电耦合在一起，并且使用单个导电路径耦合到混频器块。 对于差分信号，导电路径可以包括两个导电引线。 在混合器块内，单个导电路径可以扇形到混合器块的至少两个单元电池。 可以选择性地使能或禁用至少一个Gm单位单元来控制混频器 - 跨导块的增益设置。 这些技术可以进一步应用于支持同相和正交混合以及多模式和/或多频带操作的收发器架构。

    Methods and apparatus for implementing phase rotation at baseband frequency for transmit diversity
    10.
    发明授权
    Methods and apparatus for implementing phase rotation at baseband frequency for transmit diversity 有权
    用于实现基带频率的相位旋转用于发射分集的方法和装置

    公开(公告)号：US08160513B2

    公开(公告)日：2012-04-17

    申请号：US12185041

    申请日：2008-08-01

    申请人： Yiwu Tang ,  Mahim Ranjan ,  Marco Cassia ,  Christian Holenstein

    发明人： Yiwu Tang ,  Mahim Ranjan ,  Marco Cassia ,  Christian Holenstein

    IPC分类号： H04B7/02 ,  H04B1/02

    CPC分类号： H04B7/0682 ,  H04L1/0618 ,  H04L1/08

    摘要： An apparatus for implementing phase rotation at baseband frequency for transmit diversity may include a primary transmit signal path and a diversity transmit signal path. Both the primary transmit signal path and the diversity transmit signal path may receive a primary transmit signal. A signal selector within the diversity transmit signal path may perform phase rotation with respect to the primary transmit signal while the primary transmit signal is at a baseband frequency, thereby producing a diversity transmit signal.

    摘要翻译： 用于实现用于发射分集的基带频率的相位旋转的装置可以包括主发射信号路径和分集发射信号路径。 主发射信号路径和分集发射信号路径都可以接收主发射信号。 在主发射信号处于基带频率的同时，分集发射信号路径内的信号选择器可以相对于主发射信号执行相位旋转，从而产生分集发射信号。