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1. 发明授权

US08983418B2 Multi-stage gain control in receivers and other circuits 有权
标题翻译：接收机和其他电路中的多级增益控制
公开(公告)号：US08983418B2
公开(公告)日：2015-03-17
申请号：US13164739
申请日：2011-06-20
申请人： Amir Ibrahim , Henrik Tholstrup Jensen , Shahla Khorram , Aminghasem Safarian , Seema Anand
发明人： Amir Ibrahim , Henrik Tholstrup Jensen , Shahla Khorram , Aminghasem Safarian , Seema Anand
IPC分类号： H04B1/06 , H03G3/30 , H04B1/28 , H03D3/00
CPC分类号： H03G3/3068 , H03D3/009 , H04B1/28
摘要： Techniques and devices are disclosed to provide multi-stage gain control in circuits or devices having two or more stages of signal amplification. A circuit with multi-stage gain control can include amplification stages coupled to receive an input signal and to produce an amplified output signal. Each amplification stage includes an amplifier that is adjustable in gain and a signal detector that is coupled to measure an output signal of the amplifier and to produce a detector signal indicative of a signal strength of the output signal of the amplifier. A gain control circuit is coupled to receive detector signals from the signal detectors in the amplification stages, respectively, and to control gains of the amplifiers of the amplification stages based on respective received detector signals, respectively.
摘要翻译：公开了技术和设备以在具有两级或更多级信号放大的电路或器件中提供多级增益控制。具有多级增益控制的电路可以包括耦合以接收输入信号并产生放大的输出信号的放大级。每个放大级包括增益可调节的放大器和被耦合以测量放大器的输出信号并产生指示放大器的输出信号的信号强度的检测器信号的信号检测器。耦合增益控制电路以分别从放大级中的信号检测器接收检测器信号，并且分别基于相应的接收到的检测器信号来控制放大级的放大器的增益。

2. 发明授权

US07792513B2 Distributed RF front-end for UWB receivers 有权
标题翻译： UWB接收机的分布式射频前端
公开(公告)号：US07792513B2
公开(公告)日：2010-09-07
申请号：US11857696
申请日：2007-09-19
申请人： Aminghasem Safarian , Lei Zhou , Payam Heydari
发明人： Aminghasem Safarian , Lei Zhou , Payam Heydari
IPC分类号： H04B1/16
CPC分类号： H04B1/0092 , H04B1/18 , H04B1/71637
摘要： Described herein are ultra wide-band distributed RF (UWB-DRF) front-end receivers comprising composite cells distributed along transmission lines, where each composite cell comprises a low-noise amplifier (LNA) merged with a mixer. By merging the LNA and the mixer in each composite cell, the power consumption and chip area of the RF front-end is reduced. Further, the distributed architecture of the RF front-end allows it to operate over a wide bandwidth by absorbing the parasitic capacitances of the composite cells into the transmission lines of the RF-front end. Embodiments of the RF front-end provide wideband flat gain, low noise figure (NF), wideband linearity, and wideband matching at the inputs of the RF front-end. In an embodiment, a programmable resistance at the termination of the RF transmission line allows the RF front-end to trade off a few decibels of mismatch at the RF input for higher gain and lower NF.
摘要翻译：这里描述的是包括沿着传输线分布的复合信元的超宽带分布式RF（UWB-DRF）前端接收机，其中每个复合信元包括与混合器合并的低噪声放大器（LNA）。通过在每个复合单元中合并LNA和混频器，降低了RF前端的功耗和芯片面积。此外，RF前端的分布式架构允许其通过将复合单元的寄生电容吸收到RF前端的传输线中而在宽带宽上工作。 RF前端的实施例在RF前端的输入端提供宽带平坦增益，低噪声系数（NF），宽带线性度和宽带匹配。在一个实施例中，在RF传输线的终止处的可编程电阻允许RF前端在RF输入端取消几分贝的失配，以获得更高的增益和更低的NF。

3. 发明申请

US20120326904A1 MULTI-MODE ANALOG-TO-DIGITAL CONVERTER 有权
标题翻译：多模式模拟数字转换器
公开(公告)号：US20120326904A1
公开(公告)日：2012-12-27
申请号：US13170155
申请日：2011-06-27
申请人： Henrik Tholstrup Jensen , Jianhua Gan , Seema Anand , Aminghasem Safarian
发明人： Henrik Tholstrup Jensen , Jianhua Gan , Seema Anand , Aminghasem Safarian
IPC分类号： H03M1/20 , H03M1/12
CPC分类号： H03M1/201 , H03M3/332 , H03M3/396 , H03M3/406 , H03M3/456
摘要： Techniques and devices provide analog-to-digital conversion at two or more signal frequencies or frequency bands and can be used to construct multi-mode analog-to-digital converters in various circuits, including receivers and transceivers for wireless communications and radio broadcast environments. Adjustable analog-to-digital converters based on the described techniques can be configured to adjust circuit parameters to adapt the technical specifications of different input signals at different signal frequencies or frequency bands, such as FM, HD-radio, and DAB radio signals in radio receiver applications.
摘要翻译：技术和设备在两个或多个信号频率或频带上提供模数转换，并可用于在各种电路中构建多模式模数转换器，包括用于无线通信和无线电广播环境的接收机和收发器。可以配置基于所述技术的可调节模数转换器，以调整电路参数，以适应不同信号频率或频段的不同输入信号的技术规格，例如无线电中的FM，HD-无线电和DAB无线电信号接收机应用。

4. 发明申请

US20110051670A1 INTEGRATED BLOCKER FILTERING RF FRONT END 有权
标题翻译：集成阻塞器滤波RF前端
公开(公告)号：US20110051670A1
公开(公告)日：2011-03-03
申请号：US12942415
申请日：2010-11-09
申请人： Aminghasem Safarian , Amin Shameli , Ahmadreza (Reza) Rofougaran , Maryam Rofougaran
发明人： Aminghasem Safarian , Amin Shameli , Ahmadreza (Reza) Rofougaran , Maryam Rofougaran
IPC分类号： H04B1/10 , H04B7/216
CPC分类号： H04B5/02 , H04B1/525 , H04B17/21 , H04B17/318 , H04W4/18 , H04W88/02
摘要： A receiver architecture for canceling blocking signals in the receive path includes a low noise amplifier for receiving and amplifying an inbound RF signal to produce an amplified inbound signal, in which the inbound RF signal includes a modulated RF signal and a blocking signal, and a cancellation module for substantially canceling the blocking signal from the amplified inbound RF signal and substantially passing the modulated RF signal. The cancellation module cancels the blocking signal by generating an injection signal representative of the blocking signal, combining the blocking signal with the injection signal to produce an error signal, updating the injection signal based on the error signal and using the injection signal to cancel the blocking signal from the amplified inbound RF signal.
摘要翻译：用于消除接收路径中的阻塞信号的接收器架构包括用于接收和放大入站RF信号以产生放大入站信号的低噪声放大器，其中入站RF信号包括调制的RF信号和阻塞信号，以及取消模块，用于基本上从放大的入站RF信号中消除阻塞信号并且基本上通过调制的RF信号。消除模块通过产生表示阻塞信号的注入信号来消除阻塞信号，将阻塞信号与注入信号组合以产生误差信号，基于误差信号更新注入信号，并使用注入信号来取消阻塞来自放大的入站RF信号的信号。

5. 发明申请

US20080009257A1 Receiver architecture for canceling blocking signals 有权
公开(公告)号：US20080009257A1
公开(公告)日：2008-01-10
申请号：US11482882
申请日：2006-07-07
申请人： Aminghasem Safarian , Ahmadreza (Reza) Rofougaran
发明人： Aminghasem Safarian , Ahmadreza (Reza) Rofougaran
IPC分类号： H04B1/10 , H04Q5/22 , G08B13/14
CPC分类号： H04B5/02 , H04B1/525 , H04B17/21 , H04B17/318 , H04W4/18 , H04W88/02
摘要： A receiver architecture for canceling blocking signals in the receive path includes a low noise amplifier for receiving and amplifying an inbound RF signal to produce an amplified inbound signal, in which the inbound RF signal includes a modulated RF signal and a blocking signal, and a cancellation module for substantially canceling the blocking signal from the amplified inbound RF signal and substantially passing the modulated RF signal. The cancellation module cancels the blocking signal by generating an injection signal representative of the blocking signal, combining the blocking signal with the injection signal to produce an error signal, updating the injection signal based on the error signal and using the injection signal to cancel the blocking signal from the amplified inbound RF signal.

6. 发明申请

US20120319774A1 MULTI-STAGE GAIN CONTROL IN RECEIVERS AND OTHER CIRCUITS 有权
标题翻译：接收机和其他电路的多级增益控制
公开(公告)号：US20120319774A1
公开(公告)日：2012-12-20
申请号：US13164739
申请日：2011-06-20
申请人： Amir Ibrahim , Henrik Tholstrup Jensen , Shahla Khorram , Aminghasem Safarian , Seema Anand
发明人： Amir Ibrahim , Henrik Tholstrup Jensen , Shahla Khorram , Aminghasem Safarian , Seema Anand
IPC分类号： H03G3/20
CPC分类号： H03G3/3068 , H03D3/009 , H04B1/28
摘要： Techniques and devices are disclosed to provide multi-stage gain control in circuits or devices having two or more stages of signal amplification. A circuit with multi-stage gain control can include amplification stages coupled to receive an input signal and to produce an amplified output signal. Each amplification stage includes an amplifier that is adjustable in gain and a signal detector that is coupled to measure an output signal of the amplifier and to produce a detector signal indicative of a signal strength of the output signal of the amplifier. A gain control circuit is coupled to receive detector signals from the signal detectors in the amplification stages, respectively, and to control gains of the amplifiers of the amplification stages based on respective received detector signals, respectively.
摘要翻译：公开了技术和设备以在具有两级或更多级信号放大的电路或器件中提供多级增益控制。具有多级增益控制的电路可以包括耦合以接收输入信号并产生放大的输出信号的放大级。每个放大级包括增益可调节的放大器和被耦合以测量放大器的输出信号并产生指示放大器的输出信号的信号强度的检测器信号的信号检测器。耦合增益控制电路以分别从放大级中的信号检测器接收检测器信号，并且分别基于相应的接收到的检测器信号来控制放大级的放大器的增益。

7. 发明授权

US07898418B2 Integrated blocker filtering RF front end 失效
标题翻译：集成封锁滤波RF前端
公开(公告)号：US07898418B2
公开(公告)日：2011-03-01
申请号：US11711309
申请日：2007-02-27
申请人： Aminghasem Safarian , Amin Shameli , Ahmadreza (Reza) Rofougaran , Maryam Rofougaran
发明人： Aminghasem Safarian , Amin Shameli , Ahmadreza (Reza) Rofougaran , Maryam Rofougaran
IPC分类号： G08B13/14
CPC分类号： H04B5/02 , H04B1/525 , H04B17/21 , H04B17/318 , H04W4/18 , H04W88/02
摘要： A receiver architecture for canceling blocking signals in the receive path includes a low noise amplifier for receiving and amplifying an inbound RF signal to produce an amplified inbound signal, in which the inbound RF signal includes a modulated RF signal and a blocking signal, and a cancellation module for substantially canceling the blocking signal from the amplified inbound RF signal and substantially passing the modulated RF signal. The cancellation module cancels the blocking signal by generating an injection signal representative of the blocking signal, combining the blocking signal with the injection signal to produce an error signal, updating the injection signal based on the error signal and using the injection signal to cancel the blocking signal from the amplified inbound RF signal.
摘要翻译：用于消除接收路径中的阻塞信号的接收器架构包括用于接收和放大入站RF信号以产生放大入站信号的低噪声放大器，其中入站RF信号包括调制的RF信号和阻塞信号，以及取消模块，用于基本上从放大的入站RF信号中消除阻塞信号并且基本上通过调制的RF信号。消除模块通过产生表示阻塞信号的注入信号来消除阻塞信号，将阻塞信号与注入信号组合以产生误差信号，基于误差信号更新注入信号，并使用注入信号来取消阻塞来自放大的入站RF信号的信号。

8. 发明申请

US20090017770A1 Noise cancellation system for transceivers 审中-公开
标题翻译：收发器消噪系统
公开(公告)号：US20090017770A1
公开(公告)日：2009-01-15
申请号：US11827310
申请日：2007-07-11
申请人： Ahmad Mirzaei , Hooman Darabi , Ahmadreza Rofougaran , Aminghasem Safarian
发明人： Ahmad Mirzaei , Hooman Darabi , Ahmadreza Rofougaran , Aminghasem Safarian
IPC分类号： H04B1/38
CPC分类号： H04B1/525
摘要： According to one exemplary embodiment, a transceiver providing noise cancellation has a transmitter and a receiver, and comprises a noise cancellation system receiving input from the transmitter. The noise cancellation system generates a noise cancellation signal injected into the receiver such that the noise cancellation signal has an amplitude substantially matching an amplitude of a noise signal in the receiver, and a phase substantially opposite to a phase of the noise signal in the receiver. In one exemplary embodiment, a noise cancellation system comprises a forward injection circuit including a scaling and rotation block, and first and second phase shift and attenuation controllers providing feedback from outputs of the receiver. In one exemplary embodiment, the scaling and rotation block includes first, second, third, and fourth amplifiers to receive a down-converted noise signal and provide a noise cancellation signal.
摘要翻译：根据一个示例性实施例，提供噪声消除的收发机具有发射机和接收机，并且包括从发射机接收输入的噪声消除系统。噪声消除系统产生注入到接收机中的噪声消除信号，使得噪声消除信号具有与接收机中的噪声信号的振幅基本一致的幅度，以及与接收机中的噪声信号的相位基本相反的相位。在一个示例性实施例中，噪声消除系统包括包括缩放和旋转块的正向注入电路以及从接收器的输出提供反馈的第一和第二相移和衰减控制器。在一个示例性实施例中，缩放和旋转块包括用于接收下变频噪声信号并提供噪声消除信号的第一，第二，第三和第四放大器。

9. 发明授权

US07471204B2 Receiver architecture for canceling blocking signals 有权
标题翻译：用于消除阻塞信号的接收机架构
公开(公告)号：US07471204B2
公开(公告)日：2008-12-30
申请号：US11482882
申请日：2006-07-07
申请人： Aminghasem Safarian , Ahmadreza (Reza) Rofougaran
发明人： Aminghasem Safarian , Ahmadreza (Reza) Rofougaran
IPC分类号： G08B13/14
CPC分类号： H04B5/02 , H04B1/525 , H04B17/21 , H04B17/318 , H04W4/18 , H04W88/02
摘要： A receiver architecture for canceling blocking signals in the receive path includes a low noise amplifier for receiving and amplifying an inbound RF signal to produce an amplified inbound signal, in which the inbound RF signal includes a modulated RF signal and a blocking signal, and a cancellation module for substantially canceling the blocking signal from the amplified inbound RF signal and substantially passing the modulated RF signal. The cancellation module cancels the blocking signal by generating an injection signal representative of the blocking signal, combining the blocking signal with the injection signal to produce an error signal, updating the injection signal based on the error signal and using the injection signal to cancel the blocking signal from the amplified inbound RF signal.
摘要翻译：用于消除接收路径中的阻塞信号的接收器架构包括用于接收和放大入站RF信号以产生放大入站信号的低噪声放大器，其中入站RF信号包括调制的RF信号和阻塞信号，以及取消模块，用于基本上从放大的入站RF信号中消除阻塞信号并且基本上通过调制的RF信号。消除模块通过产生表示阻塞信号的注入信号来消除阻塞信号，将阻塞信号与注入信号组合以产生误差信号，基于误差信号更新注入信号，并使用注入信号来取消阻塞来自放大的入站RF信号的信号。

10. 发明申请

US20080299935A1 IC with saw-less RF front-end 审中-公开
标题翻译： IC带无锯频RF前端
公开(公告)号：US20080299935A1
公开(公告)日：2008-12-04
申请号：US11888784
申请日：2007-08-02
申请人： Aminghasem Safarian , Hooman Darabi , Ahmad Mirzaei , Ahmadreza (Reza) Rofougaran , Maryam Rofougaran
发明人： Aminghasem Safarian , Hooman Darabi , Ahmad Mirzaei , Ahmadreza (Reza) Rofougaran , Maryam Rofougaran
IPC分类号： H04B1/26
CPC分类号： H04B1/525
摘要： An IC includes an RF front end, a down conversion module, an up conversion module, and a local oscillation generating module. The RF front end includes a receive section, a transmit section, and an interference reduction module. The receive section receives an inbound RF signal within a receive frequency band and the transmit section transmits an outbound RF signal within a transmit frequency band. The interference reduction module is coupled to at least one of the receive section and the transmit section and facilitates at least one of: attenuating energy of the outbound RF signal within the receive frequency band based on a transmit local oscillation or a receive local oscillation; and attenuating energy of the inbound RF signal within the transmit frequency band based on the transmit local oscillation or the receive local oscillation.
摘要翻译： IC包括RF前端，下变频模块，上变频模块和本地振荡产生模块。 RF前端包括接收部分，发送部分和干扰减少模块。接收部分在接收频带内接收入站RF信号，并且发送部分发送发射频带内的出站RF信号。所述干扰减少模块耦合到所述接收部分和所述发射部分中的至少一个，并且促进以下至少一个：基于发射本地振荡或接收本地振荡来衰减所述接收频带内的出站RF信号的能量; 并且基于发射本地振荡或接收本地振荡来衰减发射频带内的入站RF信号的能量。

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