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1. 发明授权

US07471142B2 Filter calibration with cell re-use 有权
标题翻译：过滤器校准与细胞再使用
公开(公告)号：US07471142B2
公开(公告)日：2008-12-30
申请号：US11430575
申请日：2006-05-09
申请人： Qiang (Tom) Li , Hooman Darabi
发明人： Qiang (Tom) Li , Hooman Darabi
IPC分类号： H03B1/00
CPC分类号： H03H11/0472 , H03F3/72 , H03F2200/381 , H03F2203/7221 , H03H11/0444 , H03H11/52 , H03H2210/025 , H03H2210/036 , H03H2210/04
摘要： Various embodiments are disclosed relating filter calibration with cell re-use. According to an example embodiment, an apparatus includes a first circuit, including a variable circuit element. The first circuit is adapted to output an output frequency signal during a calibration mode and to operate as a filter during a filter mode. A control circuit is coupled to the first circuit and is adapted to receive a reference frequency signal and to calibrate the first circuit by adjusting the variable circuit element based on the reference frequency signal and the output frequency signal during the calibration mode. The calibrated first circuit is configured to then operate as a filter during the filter mode.
摘要翻译：公开了关于过滤器校准与细胞再利用的各种实施例。根据示例实施例，一种装置包括包括可变电路元件的第一电路。第一电路适于在校准模式期间输出输出频率信号，并且在滤波器模式期间用作滤波器。控制电路耦合到第一电路，并且适于接收参考频率信号并且通过在校准模式期间基于参考频率信号和输出频率信号调整可变电路元件来校准第一电路。校准的第一电路被配置为在滤波器模式期间作为滤波器工作。

2. 发明授权

US07826565B2 Blocker performance in a radio receiver 有权
标题翻译：无线电接收机中的阻塞器性能
公开(公告)号：US07826565B2
公开(公告)日：2010-11-02
申请号：US12464156
申请日：2009-05-12
申请人： Qiang (Tom) Li , Hooman Darabi
发明人： Qiang (Tom) Li , Hooman Darabi
IPC分类号： H04L27/22 , H04B1/16
CPC分类号： H03H11/1291
摘要： A multiple stage band pass filter of a Radio Frequency (RF) Integrated Circuit is provided with a low pass mixer output filter coupled to receive a down sampled analog information signal, a buffer coupled to an output of the low pass mixer output filter, a low pass buffer output filter coupled to an output of the buffer and a plurality of band pass filters coupled to an output of the low pass buffer output filter.
摘要翻译：射频（RF）集成电路的多级带通滤波器被提供有低通混频器输出滤波器，其被耦合以接收下采样的模拟信息信号，耦合到低通混频器输出滤波器的输出的缓冲器，低耦合到缓冲器的输出的多通道缓冲器输出滤波器以及耦合到低通缓冲器输出滤波器的输出的多个带通滤波器。

3. 发明申请

US20090221260A1 Blocker Performance in a Radio Receiver 有权
标题翻译：无线电接收机中的阻塞器性能
公开(公告)号：US20090221260A1
公开(公告)日：2009-09-03
申请号：US12464156
申请日：2009-05-12
申请人： Qiang (Tom) Li , Hooman Darabi
发明人： Qiang (Tom) Li , Hooman Darabi
IPC分类号： H04B1/16 , H04B1/10
CPC分类号： H03H11/1291
摘要： A multiple stage band pass filter of a Radio Frequency (RF) Integrated Circuit is provided with a low pass mixer output filter coupled to receive a down sampled analog information signal, a buffer coupled to an output of the low pass mixer output filter, a low pass buffer output filter coupled to an output of the buffer and a plurality of band pass filters coupled to an output of the low pass buffer output filter.
摘要翻译：射频（RF）集成电路的多级带通滤波器设置有低通混频器输出滤波器，耦合以接收下采样的模拟信息信号，耦合到低通混频器输出滤波器的输出的缓冲器，低耦合到缓冲器的输出的多通道缓冲器输出滤波器以及耦合到低通缓冲器输出滤波器的输出的多个带通滤波器。

4. 发明授权

US08064867B2 RX dual-band mixer 失效
标题翻译： RX双频混频器
公开(公告)号：US08064867B2
公开(公告)日：2011-11-22
申请号：US12136706
申请日：2008-06-10
申请人： Qiang (Tom) Li , Hooman Darabi
发明人： Qiang (Tom) Li , Hooman Darabi
IPC分类号： H04B15/00 , H04B1/26 , H04B1/28
CPC分类号： H04B1/0071
摘要： A dual-band input transceiver block is formed to operably receive one of a 2.4 GHz radio frequency signal or a 5.0 GHz radio frequency transceiver signal in a manner that minimizes duplication of circuitry and creates a combined circuit path for RF front end input stages for much of the input stage. More specifically, the embodiments of the present invention include separate amplification and mixing stages whose outputs are combined by a stabilized load with circuitry for removing a common mode feedback signal. As such, downstream components, such as amplifiers, filters, analog-to-digital converters, and other input path circuit elements, are not duplicated and may be used regardless of whether the dual-band transceiver is operating in a first or second frequency band. Operation is, in the described embodiment, only one frequency input at a time though the invention is not limited to such operation. More specifically, a first input section is operably coupled to receive a first local oscillation input and a first frequency band signal input. A second input section is coupled to receive a second local oscillation input and a second frequency band signal input. Outputs of the first and second input sections are produced to a stabilized load with a common mode feedback block for removing a common mode feedback signal. As such, an output signal is produced having a regulated DC level and having any common mode feedback signal eliminated there from.
摘要翻译：双波段输入收发器模块被形成为以最小化电路复制的方式可操作地接收2.4GHz射频信号或5.0GHz射频收发器信号中的一个，并为RF前端输入级创建多个组合电路路径的输入级。更具体地，本发明的实施例包括单独的放大和混合级，其输出通过稳定的负载与用于去除共模反馈信号的电路组合。因此，诸如放大器，滤波器，模数转换器和其它输入路径电路元件的下游部件不被复制，并且可以被使用，而不管双频带收发器是工作在第一或第二频带。在所描述的实施例中，操作是一次只输入一个频率，尽管本发明不限于此。更具体地，第一输入部分可操作地耦合以接收第一本地振荡输入和第一频带信号输入。第二输入部分被耦合以接收第二本地振荡输入和第二频带信号输入。第一和第二输入部分的输出通过用于去除共模反馈信号的共模反馈块产生到稳定的负载。因此，产生具有调节的DC电平并且从那里消除任何共模反馈信号的输出信号。

5. 发明授权

US07545889B2 Blocker performance in a radio receiver 失效
标题翻译：无线电接收机中的阻塞器性能
公开(公告)号：US07545889B2
公开(公告)日：2009-06-09
申请号：US11260848
申请日：2005-10-26
申请人： Qiang Tom Li , Hooman Darabi
发明人： Qiang Tom Li , Hooman Darabi
IPC分类号： H04L27/22 , H04B1/16
CPC分类号： H03H11/1291
摘要： Configuring a multiple stage band pass filter of a radio frequency receiver commences by setting a corner of a low pass mixer output filter that receives a down sampled analog information signal. Operation continues with setting a buffer output filter corner of a low pass buffer output filter coupled to an output of low pass mixer output filter via a buffer. Then, operation includes setting the poles and zero of a plurality of band pass filters coupled to the output of the low pass buffer output filter is performed. This operation includes first setting a zero of a respected band pass filter and then setting the plurality of poles of the band pass filter. Finally, operation concludes with setting a combined gain of the combination of the low pass mixer output filter, the low pass buffer output filter, and the plurality of band pass filters.
摘要翻译：通过设置接收下采样模拟信号信号的低通混频器输出滤波器的一角，来构成射频接收机的多级带通滤波器。操作继续设置通过缓冲器耦合到低通混频器输出滤波器的输出的低通缓冲器输出滤波器的缓冲器输出滤波器角。然后，操作包括设置耦合到低通缓冲器输出滤波器的输出的多个带通滤波器的极点和零点。该操作包括首先设置带宽滤波器的零值，然后设置带通滤波器的多个极点。最后，通过设置低通混频器输出滤波器，低通缓冲器输出滤波器和多个带通滤波器的组合的组合增益来进行操作。

6. 发明授权

US07386290B2 RX dual-band mixer 有权
标题翻译： RX双频混频器
公开(公告)号：US07386290B2
公开(公告)日：2008-06-10
申请号：US10922531
申请日：2004-08-20
申请人： Qiang (Tom) Li , Hooman Darabi
发明人： Qiang (Tom) Li , Hooman Darabi
IPC分类号： H04B1/18 , H04B1/28
CPC分类号： H04B1/0071
摘要： A dual-band input transceiver block is formed to operably receive one of a 2.4 GHz radio frequency signal or a 5.0 GHz radio frequency transceiver signal in a manner that minimizes duplication of circuitry and creates a combined circuit path for RF front end input stages for much of the input stage. The embodiments include separate amplification and mixing stages whose outputs are combined by a stabilized load with circuitry for removing a common mode feedback signal. A first input section is operably coupled to receive a first local oscillation input and a first frequency band signal input. A second input section is coupled to receive a second local oscillation input and a second frequency band signal input. Outputs of the first and second input sections are produced to a stabilized load with a common mode feedback block for removing a common mode feedback signal.
摘要翻译：双波段输入收发器模块被形成为以最小化电路复制的方式可操作地接收2.4GHz射频信号或5.0GHz射频收发器信号中的一个，并为RF前端输入级创建多个组合电路路径的输入级。这些实施例包括单独的放大和混合级，其输出通过稳定的负载与用于去除共模反馈信号的电路组合。第一输入部分可操作地耦合以接收第一本地振荡输入和第一频带信号输入。第二输入部分被耦合以接收第二本地振荡输入和第二频带信号输入。第一和第二输入部分的输出通过用于去除共模反馈信号的共模反馈块产生到稳定的负载。

7. 发明授权

US09569003B2 Portable computing device including a three-dimensional touch screen 有权
标题翻译：便携式计算设备包括三维触摸屏
公开(公告)号：US09569003B2
公开(公告)日：2017-02-14
申请号：US13336425
申请日：2011-12-23
申请人： Ahmadreza (Reza) Rofougaran , Maryam Rofougaran , Brima B. Ibrahim , Hooman Darabi
发明人： Ahmadreza (Reza) Rofougaran , Maryam Rofougaran , Brima B. Ibrahim , Hooman Darabi
IPC分类号： G06F3/041 , G06F3/01 , H04B1/00 , H04M1/725
CPC分类号： G06F3/017 , G06F3/041 , G06F2203/04108 , H04B1/00 , H04M1/725
摘要： 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.
摘要翻译：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。

8. 发明授权

US09071317B2 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.

9. 发明授权

US08761696B2 Highly linear and very low-noise down-conversion mixer for extracting weak signals in the presence of very strong unwanted signals 有权
标题翻译：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。

10. 发明授权

US08737535B2 Discrete digital receiver with FTBPF 有权
标题翻译：具有FTBPF的离散数字接收机
公开(公告)号：US08737535B2
公开(公告)日：2014-05-27
申请号：US13248634
申请日：2011-09-29
申请人： Ahmadreza (Reza) Rofougaran , Hooman Darabi
发明人： Ahmadreza (Reza) Rofougaran , Hooman Darabi
IPC分类号： H04L27/00
CPC分类号： H04B1/001 , H03H19/00 , H03H2015/007 , H04B1/0028
摘要： 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.
摘要翻译：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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