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公开(公告)号：US09569003B2
公开(公告)日：2017-02-14
申请号：US13336425
申请日：2011-12-23
Applicant: Ahmadreza (Reza) Rofougaran , Maryam Rofougaran , Brima B. Ibrahim , Hooman Darabi
Inventor： Ahmadreza (Reza) Rofougaran , Maryam Rofougaran , Brima B. Ibrahim , Hooman Darabi
CPC classification number: G06F3/017 , G06F3/041 , G06F2203/04108 , H04B1/00 , H04M1/725
Abstract: A portable computing device includes a three-dimensional (3D) touch screen and a core module. The 3D touch screen includes a two-dimensional (2D) touch screen section and a plurality of radio frequency (RF) radar modules. The core module is operable to determine whether the 3D touch screen is in a 3D mode or a 2D mode. When the 3D touch screen is in the 3D mode, the core module is further operable to receive one or more radar signals via one or more of the plurality of RF radar modules and interpret the one or more radar signals to produce a 3D input signal.
Abstract translation: 便携式计算设备包括三维（3D）触摸屏和核心模块。 3D触摸屏包括二维（2D）触摸屏部分和多个射频（RF）雷达模块。 核心模块可操作以确定3D触摸屏是3D模式还是2D模式。 当3D触摸屏处于3D模式时，核心模块还可操作以经由多个RF雷达模块中的一个或多个接收一个或多个雷达信号，并且解释一个或多个雷达信号以产生3D输入信号。
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公开(公告)号：US09071317B2
公开(公告)日：2015-06-30
申请号：US11825415
申请日：2007-07-06
Applicant: Ahmad Mirzaei , Hooman Darabi
Inventor： Ahmad Mirzaei , Hooman Darabi
CPC classification number: H04B1/1036
Abstract: 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.
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3.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
Applicant: Ahmad Mirzaei , Hooman Darabi
Inventor： Ahmad Mirzaei , Hooman Darabi
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US08737535B2
公开(公告)日：2014-05-27
申请号：US13248634
申请日：2011-09-29
Applicant: Ahmadreza (Reza) Rofougaran , Hooman Darabi
Inventor： Ahmadreza (Reza) Rofougaran , Hooman Darabi
IPC: H04L27/00
CPC classification number: H04B1/001 , H03H19/00 , H03H2015/007 , H04B1/0028
Abstract: A receiver includes an antenna interface, a frequency translation bandpass filter (FTBPF), a sample and hold module, and a down conversion module. The antenna interface is operable to receive a received wireless signal from an antenna structure and to isolate the received wireless signal from another wireless signal. The FTBPF is operable to filter the received wireless signal to produce an inbound wireless signal. The sample and hold module is operable to sample and hold the inbound wireless signal in accordance with an S&H clock signal to produce a frequency domain sample pulse train. The down conversion module is operable to convert the frequency domain sample pulse train into an inbound baseband signal.
Abstract translation: 接收机包括天线接口，频率转换带通滤波器（FTBPF），采样保持模块和下变频模块。 天线接口可操作以从天线结构接收接收到的无线信号，并将接收的无线信号与另一无线信号分离。 FTBPF可操作以对接收的无线信号进行滤波以产生入站无线信号。 采样和保持模块可操作以根据S＆H时钟信号采样和保持入站无线信号，以产生频域采样脉冲串。 下变频模块可操作以将频域采样脉冲串转换成入站基带信号。
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5.发明申请Method and Apparatus for Adaptive Cancellation of Distortion and Phase Noise 有权用于自适应消除失真和相位噪声的方法和装置公开(公告)号：US20130303103A1
公开(公告)日：2013-11-14
申请号：US13470123
申请日：2012-05-11
Applicant: Mohyee Mikhemar , Hooman Darabi
Inventor： Mohyee Mikhemar , Hooman Darabi
CPC classification number: H04B1/123
Abstract: An adaptive cancellation circuit and method are provided. The circuit includes a main path and an auxiliary path. The main path includes a first amplifier configured to output a first amplified signal to a first mixer. The main path is configured to output a first signal comprising a wanted signal component and a distortion component. The auxiliary path includes a second amplifier configured to output a second amplified signal to a second mixer. The second mixer is connected to a filter configured to remove the wanted signal component. The auxiliary path is configured to output a second signal including the distortion component.
Abstract translation: 提供自适应消除电路和方法。 电路包括主路径和辅助路径。 主路径包括被配置为将第一放大信号输出到第一混频器的第一放大器。 主路径被配置为输出包括有用信号分量和失真分量的第一信号。 辅助路径包括被配置为将第二放大信号输出到第二混频器的第二放大器。 第二混频器连接到配置成去除所需信号分量的滤波器。 辅助路径被配置为输出包括失真分量的第二信号。
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Patent Agency Ranking
公开(公告)号：US08483617B2
公开(公告)日：2013-07-09
申请号：US13336724
申请日：2011-12-23
Applicant: Ahmadreza (Reza) Rofougaran , Maryam Rofougaran , Brima B. Ibrahim , Hooman Darabi
Inventor： Ahmadreza (Reza) Rofougaran , Maryam Rofougaran , Brima B. Ibrahim , Hooman Darabi
CPC classification number: H04B15/00 , G06F1/1626 , G06F1/1643 , G06F1/1698 , G06F3/017 , H04B7/15507
Abstract: A portable computing device includes a radio frequency (RF) wired link, a core module, and a plurality of multi-mode RF units. When one or more of the multi-mode RF units are supporting a high-speed data communication, the core module is operable to detect a blocker that is adversely affecting the high-speed data communication. The core module is further operable to determine whether a radiation pattern alternative for the high-speed data communication will reduce the adverse affects on the high-speed data communication. When the radiation pattern alternative for the high-speed data communication will reduce the adverse affects on the high-speed data communication, the core module is further operable to enable the radiation pattern alternative. The one or more multi-mode RF units are operable to adjust at least one of transmission and reception of the high-speed data communication in accordance with the radiation pattern alternative.
Abstract translation: 便携式计算设备包括射频（RF）有线链路，核心模块和多个多模RF单元。 当一个或多个多模RF单元支持高速数据通信时，核心模块可操作以检测对高速数据通信有不利影响的阻塞器。 核心模块还可操作以确定用于高速数据通信的辐射模式替代方案是否将减少对高速数据通信的不利影响。 当用于高速数据通信的辐射模式替代方案将减少对高速数据通信的不利影响时，核心模块进一步可操作以使辐射模式可选。 所述一个或多个多模式RF单元可操作以根据所述辐射模式替代来调整所述高速数据通信的发送和接收中的至少一个。
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公开(公告)号：US08457580B2
公开(公告)日：2013-06-04
申请号：US12804399
申请日：2010-07-20
Applicant: Mohyee Mikhemar , Hooman Darabi , Masoud Kahrizi
Inventor： Mohyee Mikhemar , Hooman Darabi , Masoud Kahrizi
Abstract: According to one embodiment, a compact low-power receiver comprises a front-end producing a front-end gain and a back-end producing a back-end gain. The front-end includes a transconductance amplifier providing digital gain control and outputting an amplified receive signal, a mixer for generating a down-converted signal from the amplified receive signal, and a transimpedance amplifier (TIA) including a current mode buffer. The TIA provides gain control for amplifying the down-converted signal to produce a front-end output signal. In one embodiment, the back end includes a second-order low-pass filter to produce a filtered signal from the front-end output signal and an analog-to-digital converter (ADC), wherein the filtered signal is fed directly to the ADC without direct-current (DC) offset cancellation being performed. In various embodiments, the front-end gain is substantially greater than the back-end gain.
Abstract translation: 根据一个实施例，紧凑型低功率接收机包括产生前端增益的前端和产生后端增益的后端。 前端包括提供数字增益控制和输出放大的接收信号的跨导放大器，用于从放大的接收信号产生下变频信号的混频器，以及包括电流模式缓冲器的跨阻抗放大器（TIA）。 TIA提供用于放大下变频信号以产生前端输出信号的增益控制。 在一个实施例中，后端包括从前端输出信号产生滤波信号的二阶低通滤波器和模数转换器（ADC），其中滤波后的信号被直接馈送到ADC 没有执行直流（DC）偏移消除。 在各种实施例中，前端增益基本上大于后端增益。
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公开(公告)号：US08446229B2
公开(公告)日：2013-05-21
申请号：US12546397
申请日：2009-08-24
Applicant: Amir Hadji-Abdolhamid , Hooman Darabi
Inventor： Amir Hadji-Abdolhamid , Hooman Darabi
CPC classification number: H03J5/24 , H03J2200/10
Abstract: Embodiments of a capacitive tuning system implementing a tunable capacitive array are presented herein. The tunable capacitive array includes both scaled coarse capacitors and one or more fine capacitors. The one or more fine capacitors advantageously reduce a differential nonlinearity associated with the scaled coarse capacitors. The use of fine capacitors limits additional area requirements in an integrated circuit implementation, while improving the accuracy of the capacitive tuning system.
Abstract translation: 本文给出了实现可调谐电容阵列的电容调谐系统的实施例。 可调电容阵列包括缩放粗略电容器和一个或多个精细电容器。 一个或多个精细电容器有利地降低与缩放的粗糙电容器相关联的差分非线性。 精细电容器的使用在集成电路实现中限制了额外的面积要求，同时提高了电容调谐系统的精度。
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公开(公告)号：US08385444B2
公开(公告)日：2013-02-26
申请号：US13241410
申请日：2011-09-23
Applicant: Ahmadreza (Reza) Rofougaran , Hooman Darabi
Inventor： Ahmadreza (Reza) Rofougaran , Hooman Darabi
CPC classification number: H04B1/001 , H03H19/00 , H03H2015/007 , H04B1/0028
Abstract: A receiver includes a bandpass filter module, a sample and hold module, a discrete time bandpass filter module, a discrete time notch filter module, a combining module, and a conversion module. The bandpass filter module filters an inbound wireless that includes a desired signal component and an undesired signal component. The sample and hold module is operable to sample and hold the filtered inbound wireless signal to produce a frequency domain sample pulse train. The discrete time bandpass filter module bandpass filters the frequency domain sample pulse train to produce a bandpass filtered sample pulse. The discrete time notch filter module notch filters the frequency domain sample pulse train to produce a notched filtered sample pulse. The combining module combines the bandpass filtered sample pulse and the notched filtered sample pulse to produce a filtered inbound signal. The conversion module converts the filtered inbound signal into an inbound baseband signal.
Abstract translation: 接收机包括带通滤波器模块，采样和保持模块，离散时间带通滤波器模块，离散时间陷波滤波器模块，组合模块和转换模块。 带通滤波器模块对包括期望的信号分量和不期望的信号分量的入站无线电进行滤波。 采样和保持模块可操作以采样和保持滤波的入站无线信号以产生频域采样脉冲串。 离散时间带通滤波器模块对频域采样脉冲串进行滤波，以产生带通滤波采样脉冲。 离散时间陷波滤波器模块对频域采样脉冲串进行陷波滤波，以产生有缺口的滤波采样脉冲。 组合模块组合带通滤波的采样脉冲和带槽滤波的采样脉冲，以产生滤波的入站信号。 转换模块将滤波后的入站信号转换为入站基带信号。
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公开(公告)号：US08374225B2
公开(公告)日：2013-02-12
申请号：US11641999
申请日：2006-12-19
Applicant: Ahmadreza (Reza) Rofougaran , Maryam Rofougaran , Hooman Darabi , Frederic Christian Marc Hayem , Claude G. Hayek , Vafa James Rakshani , Nelson R. Sollenberger , Yossi Cohen
Inventor： Ahmadreza (Reza) Rofougaran , Maryam Rofougaran , Hooman Darabi , Frederic Christian Marc Hayem , Claude G. Hayek , Vafa James Rakshani , Nelson R. Sollenberger , Yossi Cohen
Abstract: A Voice-Data-RF IC includes a baseband processing module, an RF section, and an interface module. The baseband processing module converts an outbound voice signal into an outbound voice symbol stream, converts an inbound voice symbol stream into an inbound voice signal, converts outbound data into an outbound data symbol stream, and converts an inbound data symbol stream into inbound data. The RF section converts an inbound RF voice signal into the inbound voice symbol stream, converts the outbound voice symbol stream into an outbound RF voice signal, converts an inbound RF data signal into the inbound data symbol stream, and converts the outbound data symbol stream into an outbound RF data signal. The interface module provides coupling between the baseband processing module, the RF section, and with off-chip circuits.
Abstract translation: 语音数据RF IC包括基带处理模块，RF部分和接口模块。 基带处理模块将出站语音信号转换为出站语音符号流，将入站语音符号流转换为入站语音信号，将出站数据转换为出站数据符号流，并将入站数据符号流转换为入站数据。 RF部分将进入的RF语音信号转换成入站语音符号流，将出站的语音符号流转换成出站的RF语音信号，将入站的RF数据信号转换成入站数据符号流，并将出站的数据符号流转换成 出站RF数据信号。 接口模块提供基带处理模块，RF部分和片外电路之间的耦合。
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