公开(公告)号：US20080231759A1

公开(公告)日：2008-09-25

申请号：US11688522

申请日：2007-03-20

申请人： Nick Cowley ,  Sawyer Albert David ,  Mark Mudd ,  Richard Goldman ,  Colin Perry ,  Ruiyan Zhao

发明人： Nick Cowley ,  Sawyer Albert David ,  Mark Mudd ,  Richard Goldman ,  Colin Perry ,  Ruiyan Zhao

IPC分类号： H03H7/01

CPC分类号： H04B1/0067 ,  H03H7/0161 ,  H04B1/1036 ,  H04N5/4401 ,  H04N21/42607

摘要： Various embodiments are directed to removing interfering signals in a broadband radio frequency (RF) receiver by implementing a silicon tuner arranged to replicate high quality factor (Q) performance without the advantages of using high Q components available for module tuners. In one or more embodiments, tuned filter elements within a broadband silicon tuner are reused to maximize the attenuation of unwanted signals while minimizing induced undesirable channel ripple. In various implementations, a number of tuned passive inductor/capacitor filter elements are combined as required such that filter elements for an unused frequency band are reconfigured to provide attenuation of and enhanced immunity to unwanted signals. Other embodiments are described and claimed.

摘要翻译： 各种实施例旨在通过实施布置成复制高质量因子（Q）性能的硅调谐器而不使用可用于模块调谐器的高Q分量的优点来去除宽带射频（RF）接收机中的干扰信号。 在一个或多个实施例中，宽带硅调谐器内的调谐滤波器元件被重新使用以最大化不需要的信号的衰减，同时最小化诱导的不期望的信道纹波。 在各种实施方案中，根据需要组合多个调谐的无源电感器/电容器滤波器元件，使得针对未使用频带的滤波器元件被重新配置以提供衰减并增强对不想要的信号的抗扰性。 描述和要求保护其他实施例。

公开(公告)号：US07532070B2

公开(公告)日：2009-05-12

申请号：US11859802

申请日：2007-09-24

申请人： Nick Cowley ,  Ruiyan Zhao

发明人： Nick Cowley ,  Ruiyan Zhao

IPC分类号： H03F3/45

CPC分类号： H03G1/0023 ,  H03F1/26 ,  H03F3/19 ,  H03F3/211 ,  H03F2200/294 ,  H03F2200/451 ,  H03G1/0088

摘要： An automatic gain control (AGC) system and method for implementing a wide dynamic range automatic gain control (AGC) are disclosed. The AGC system features a large gain adjustment suitable for integration in silicon tuners. The AGC structure employs a pair of classical current steering stages, architecturally arranged to share the gain back-off characteristic in a novel “ping-pong” arrangement. The AGC system and method deliver a wide dynamic range at low power dissipation in radio frequency (RF) systems, but may be implemented as well in other applications.

摘要翻译： 公开了一种用于实现宽动态范围自动增益控制（AGC）的自动增益控制（AGC）系统和方法。 AGC系统具有适合于集成在硅调谐器中的大增益调整。 AGC结构采用一对经典的电流转向级，在一个新颖的“乒乓”设计中，在架构上被布置成共享增益补偿特性。 AGC系统和方法在射频（RF）系统中以低功耗提供宽动态范围，但也可以在其他应用中实现。

公开(公告)号：US07626457B2

公开(公告)日：2009-12-01

申请号：US11863701

申请日：2007-09-28

申请人： Mark Mudd ,  Isaac Ali ,  Ruiyan Zhao ,  Nick Cowley ,  Colin Perry ,  Richard Goldman

发明人： Mark Mudd ,  Isaac Ali ,  Ruiyan Zhao ,  Nick Cowley ,  Colin Perry ,  Richard Goldman

IPC分类号： H03F3/45

CPC分类号： H03F1/26 ,  H03F3/19 ,  H03F3/211 ,  H03F2200/294 ,  H03F2200/451 ,  H03G1/0023

摘要： An Automatic Gain Control (AGC) module for controlling Noise Figure (NF) and IM characteristics therein is disclosed. The AGC module comprises a plurality of AGC stages. Each AGC stage comprises a differential amplifier circuit, an input signal transistor and a current-steering circuit. Differential amplifier circuits of the plurality of AGC stages receive control signals at their differential inputs and their output is connected to a common load. The input signal transistors of the plurality of AGC stages receive a common input signal and is further coupled to the differential amplifier circuit and the current-steering circuit. The current-steering circuits and the control signals at the differential amplifier circuits control gain of the each AGC stage of the plurality of AGC stage, which is used to control the NF and the IM characteristics.

摘要翻译： 公开了一种用于控制噪声系数（NF）和IM特性的自动增益控制（AGC）模块。 AGC模块包括多个AGC级。 每个AGC级包括差分放大器电路，输入信号晶体管和电流 - 转向电路。 多个AGC级的差分放大器电路在其差分输入处接收控制信号，并且其输出连接到公共负载。 多个AGC级的输入信号晶体管接收公共输入信号，并且还耦合到差分放大器电路和电流转向电路。 差动放大器电路中的电流导向电路和控制信号控制用于控制NF和IM特性的多个AGC级的每个AGC级的增益。

公开(公告)号：US20090085660A1

公开(公告)日：2009-04-02

申请号：US11863701

申请日：2007-09-28

申请人： Mark Mudd ,  Isaac Ali ,  Ruiyan Zhao ,  Nick Cowley ,  Colin Perry ,  Richard Goldman

发明人： Mark Mudd ,  Isaac Ali ,  Ruiyan Zhao ,  Nick Cowley ,  Colin Perry ,  Richard Goldman

IPC分类号： H03F3/45

CPC分类号： H03F1/26 ,  H03F3/19 ,  H03F3/211 ,  H03F2200/294 ,  H03F2200/451 ,  H03G1/0023

摘要： An Automatic Gain Control (AGC) module for controlling Noise Figure (NF) and IM characteristics therein is disclosed. The AGC module comprises a plurality of AGC stages. Each AGC stage comprises a differential amplifier circuit, an input signal transistor and a current-steering circuit. Differential amplifier circuits of the plurality of AGC stages receive control signals at their differential inputs and their output is connected to a common load. The input signal transistors of the plurality of AGC stages receive a common input signal and is further coupled to the differential amplifier circuit and the current-steering circuit. The current-steering circuits and the control signals at the differential amplifier circuits control gain of the each AGC stage of the plurality of AGC stage, which is used to control the NF and the IM characteristics.

摘要翻译： 公开了一种用于控制噪声系数（NF）和IM特性的自动增益控制（AGC）模块。 AGC模块包括多个AGC级。 每个AGC级包括差分放大器电路，输入信号晶体管和电流 - 转向电路。 多个AGC级的差分放大器电路在其差分输入处接收控制信号，并且其输出连接到公共负载。 多个AGC级的输入信号晶体管接收公共输入信号，并且还耦合到差分放大器电路和电流转向电路。 差动放大器电路中的电流导向电路和控制信号控制用于控制NF和IM特性的多个AGC级的每个AGC级的增益。

公开(公告)号：US07672653B2

公开(公告)日：2010-03-02

申请号：US11688522

申请日：2007-03-20

申请人： Nick Cowley ,  Sawyer Albert David ,  Mark Mudd ,  Richard Goldman ,  Colin Perry ,  Ruiyan Zhao

发明人： Nick Cowley ,  Sawyer Albert David ,  Mark Mudd ,  Richard Goldman ,  Colin Perry ,  Ruiyan Zhao

IPC分类号： H04B1/06 ,  H04B1/18

CPC分类号： H04B1/0067 ,  H03H7/0161 ,  H04B1/1036 ,  H04N5/4401 ,  H04N21/42607

摘要： Various embodiments are directed to removing interfering signals in a broadband radio frequency (RF) receiver by implementing a silicon tuner arranged to replicate high quality factor (Q) performance without the advantages of using high Q components available for module tuners. In one or more embodiments, tuned filter elements within a broadband silicon tuner are reused to maximize the attenuation of unwanted signals while minimizing induced undesirable channel ripple. In various implementations, a number of tuned passive inductor/capacitor filter elements are combined as required such that filter elements for an unused frequency band are reconfigured to provide attenuation of and enhanced immunity to unwanted signals. Other embodiments are described and claimed.

摘要翻译： 各种实施例旨在通过实施布置成复制高质量因子（Q）性能的硅调谐器而不使用可用于模块调谐器的高Q分量的优点来去除宽带射频（RF）接收机中的干扰信号。 在一个或多个实施例中，宽带硅调谐器内的调谐滤波器元件被重新使用以最大化不需要的信号的衰减，同时最小化诱导的不期望的信道纹波。 在各种实施方案中，根据需要组合多个调谐的无源电感器/电容器滤波器元件，使得针对未使用频带的滤波器元件被重新配置以提供衰减并增强对不想要的信号的抗扰性。 描述和要求保护其他实施例。

公开(公告)号：US20090079500A1

公开(公告)日：2009-03-26

申请号：US11859802

申请日：2007-09-24

申请人： Nick Cowley ,  Ruiyan Zhao

发明人： Nick Cowley ,  Ruiyan Zhao

IPC分类号： H03F3/45 ,  H03G3/12

CPC分类号： H03G1/0023 ,  H03F1/26 ,  H03F3/19 ,  H03F3/211 ,  H03F2200/294 ,  H03F2200/451 ,  H03G1/0088

摘要： An automatic gain control (AGC) system and method for implementing a wide dynamic range automatic gain control (AGC) are disclosed. The AGC system features a large gain adjustment suitable for integration in silicon tuners. The AGC structure employs a pair of classical current steering stages, architecturally arranged to share the gain back-off characteristic in a novel “ping-pong” arrangement. The AGC system and method deliver a wide dynamic range at low power dissipation in radio frequency (RF) systems, but may be implemented as well in other applications.

摘要翻译： 公开了一种用于实现宽动态范围自动增益控制（AGC）的自动增益控制（AGC）系统和方法。 AGC系统具有适合于集成在硅调谐器中的大增益调整。 AGC结构采用一对经典的电流转向级，在一个新颖的“乒乓”设计中，在架构上被布置成共享增益补偿特性。 AGC系统和方法在射频（RF）系统中以低功耗提供宽动态范围，但也可以在其他应用中实现。

公开(公告)号：US08351862B2

公开(公告)日：2013-01-08

申请号：US11968168

申请日：2008-01-01

申请人： Ernest T. Tsui ,  Nick Cowley ,  Bernard Arambepola

发明人： Ernest T. Tsui ,  Nick Cowley ,  Bernard Arambepola

IPC分类号： H04B1/00

CPC分类号： H04B7/0857 ,  H04N21/414

摘要： Device, system, and method of mitigating interference to digital television signals. For example, an apparatus includes a diversity-based digital television receiver having a filter controller and at least first and second channel paths, wherein the first channel path includes a first Global System for Mobile communication (GSM) reject filter, the second channel path includes a second GSM reject filter, the second channel path is parallel to the first channel path, and the filter controller is to selectively switch an operational state of the first GSM reject filter.

摘要翻译： 降低数字电视信号干扰的装置，系统和方法。 例如，一种装置包括具有滤波器控制器和至少第一和第二信道路径的基于分集的数字电视接收机，其中第一信道路径包括第一全球移动通信系统（GSM）拒绝滤波器，第二信道路径包括 第二GSM拒绝滤波器，第二信道路径平行于第一信道路径，并且滤波器控制器选择性地切换第一GSM拒绝滤波器的工作状态。

公开(公告)号：US20090268101A1

公开(公告)日：2009-10-29

申请号：US12150006

申请日：2008-04-24

申请人： Parveen Shukla ,  Bernard Arambepola ,  Thushara Hewavithana ,  Nick Cowley

发明人： Parveen Shukla ,  Bernard Arambepola ,  Thushara Hewavithana ,  Nick Cowley

IPC分类号： H04N5/44 ,  H04B1/10

CPC分类号： H04B1/30 ,  H03D3/009 ,  H04L27/3863 ,  H04N5/455 ,  H04N21/4382

摘要： A direct conversion television receiver may include a phase de-rotator which substantially undoes the phase rotation of a phase rotator. The phase de-rotator takes the low pass filtered signal and substantially removes the rotation caused by the phase rotator. As a result, it is easier to estimate the phase and gain imbalance and to make a correction for the phase and gain imbalance, via a feedback loop, without the effects of phase rotation.

摘要翻译： 直接转换电视接收机可以包括基本上消除相位旋转器的相位旋转的相位去旋转器。 相位去旋转器采用低通滤波信号，并且基本上消除了由相位旋转器引起的旋转。 因此，更容易估计相位和增益不平衡，并通过反馈回路对相位和增益不平衡进行校正，而不会产生相位旋转的影响。

公开(公告)号：US20090116586A1

公开(公告)日：2009-05-07

申请号：US11933579

申请日：2007-11-01

申请人： Bernard Arambepola ,  Nick Cowley

发明人： Bernard Arambepola ,  Nick Cowley

IPC分类号： H04B1/10 ,  H04L27/22

CPC分类号： H04L27/3863 ,  H03D3/009 ,  H04B1/30 ,  H04L2027/0024

摘要： A direct conversion receiver and a method for correcting phase imbalance therein is disclosed. An input signal is applied to an in-phase channel and a quadrature channel of the receiver. The input signal is processed by the direct conversion receiver to obtain an in-phase zero intermediate frequency (IF) signal in the in-phase channel and a quadrature zero-IF signal in the quadrature channel. The in-phase zero-IF signal and the quadrature zero-IF signal are filtered to obtain a fixed band signal. A phase imbalance correction value is obtained for the fixed-band quadrature zero-IF signal as a function of the frequency of the fixed-band in-phase zero-IF signal and the fixed-band quadrature zero-IF signal. The in-phase zero-IF signal and the quadrature zero-IF signal are sampled and the phase imbalance correction value is applied using an interpolation to the sampled quadrature zero-IF signal or to the sampled in-phase zero-IF signal to correct the phase imbalance in the direct conversion receiver.

摘要翻译： 公开了一种用于校正相位不平衡的直接转换接收机和方法。 输入信号被施加到接收机的同相信道和正交信道。 输入信号由直接转换接收机处理，以获得同相信道中的同相零中频（IF）信号和正交信道中的正交零中频信号。 对同相零中频信号和正交零中频信号进行滤波以获得固定频带信号。 作为固定频带同相零中频信号和固定频带正交零中频信号的频率的函数，针对固定频带正交零中频信号获得相位不平衡校正值。 对同相零中频信号和正交零中频信号进行采样，并使用插值对采样的正交零中频信号或采样同相零中频信号施加相位不平衡校正值，以校正 直接转换接收机的相位不平衡。

公开(公告)号：US20080049875A1

公开(公告)日：2008-02-28

申请号：US11467390

申请日：2006-08-25

申请人： Nick Cowley ,  David Albert Sawyer ,  Isaac Ali

发明人： Nick Cowley ,  David Albert Sawyer ,  Isaac Ali

IPC分类号： H03D3/00

CPC分类号： H03D3/007

摘要： Embodiments of a zero intermediate frequency (ZIF) tuner are described generally herein. Other embodiments may be described and claimed.

摘要翻译： 本文一般地描述零中频（ZIF）调谐器的实施例。 可以描述和要求保护其他实施例。