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    OSCILLATOR COUPLING TO REDUCE SPURIOUS SIGNALS IN RECEIVER CIRCUITS
    1.
    发明申请
    OSCILLATOR COUPLING TO REDUCE SPURIOUS SIGNALS IN RECEIVER CIRCUITS 审中-公开

    公开(公告)号：WO2006127817A3

    公开(公告)日：2006-11-30

    申请号：PCT/US2006/020088

    申请日：2006-05-24

    Applicant: RF MAGIC, INC. ,  BISANTI, Biagio ,  COPPOLA, Francesco ,  CIPRIANI, Stefano

    Inventor： BISANTI, Biagio ,  COPPOLA, Francesco ,  CIPRIANI, Stefano

    IPC: H04B1/40

    Abstract: A first receiver frequency reference is passively coupled to a second receiver by tapping a signal directly from the resonant element, such as a crystal, of an oscillator in the first receiver to drive the input of the second receiver. The sinusoidal signal from the resonant element is relatively free of harmonics and minimizes interference that could be caused by harmonics of a square wave signal coupling or an amplified signal. The oscillator of each receiver can be selectively enabled or disabled to allow the receiver to either generate or receive the frequency reference. This technique of coupling can be used to couple a frequency reference signal between integrated circuit receivers.

    OSCILLATOR COUPLING TO REDUCE SPURIOUS SIGNALS IN RECEIVER CIRCUITS
    2.
    发明申请
    OSCILLATOR COUPLING TO REDUCE SPURIOUS SIGNALS IN RECEIVER CIRCUITS 审中-公开
    振荡器耦合以减少接收器电路中的信号

    公开(公告)号：WO2006127817A2

    公开(公告)日：2006-11-30

    申请号：PCT/US2006020088

    申请日：2006-05-24

    Applicant: RF MAGIC INC ,  BISANTI BIAGIO ,  COPPOLA FRANCESCO ,  CIPRIANI STEFANO

    Inventor： BISANTI BIAGIO ,  COPPOLA FRANCESCO ,  CIPRIANI STEFANO

    IPC: H04B1/40

    CPC classification number: H04B1/28 ,  H04B1/403

    Abstract: A first receiver frequency reference is passively coupled to a second receiver by tapping a signal directly from the resonant element, such as a crystal, of an oscillator in the first receiver to drive the input of the second receiver. The sinusoidal signal from the resonant element is relatively free of harmonics and minimizes interference that could be caused by harmonics of a square wave signal coupling or an amplified signal. The oscillator of each receiver can be selectively enabled or disabled to allow the receiver to either generate or receive the frequency reference. This technique of coupling can be used to couple a frequency reference signal between integrated circuit receivers.

    Abstract translation: 第一接收机频率参考被动地耦合到第二接收机，通过从第一接收机中的振荡器的谐振元件（例如晶体）直接抽出信号来驱动第二接收机的输入。 来自谐振元件的正弦信号相对没有谐波并且最小化可能由方波信号耦合或放大信号的谐波引起的干扰。 可以选择性地使能或禁用每个接收机的振荡器以允许接收机生成或接收频率参考。 这种耦合技术可用于在集成电路接收器之间耦合频率参考信号。

    TUNER DESIGN AND SYSTEM FOR LOSSLESS INTERCONNECT OF MULTIPLE TUNERS
    3.
    发明申请
    TUNER DESIGN AND SYSTEM FOR LOSSLESS INTERCONNECT OF MULTIPLE TUNERS 审中-公开
    调谐器设计和系统，用于多重调谐器的无缝连接

    公开(公告)号：WO2006065647A2

    公开(公告)日：2006-06-22

    申请号：PCT/US2005/044614

    申请日：2005-12-09

    Applicant: RF MAGIC, INC. ,  SHAH, Peter

    Inventor： SHAH, Peter

    IPC: H03H7/38 ,  H04N7/10

    CPC classification number: H04B1/18 ,  H03H7/38 ,  H03J1/0083 ,  H04B1/005 ,  H04B1/006

    Abstract: Tuners with high input impedance are connected to a common radio frequency (RF) signal source. A termination load external to the tuners provides matched impedance loading for the transmission line or cable driving the tuners. Alternatively, the termination load can be located inside one tuner with a switch to enable or disable the load. All tuners receive the same signal and no signal degradation is caused when connecting multiple tuners. The multiple tuner connection is useful in television signal receiving devices that receive more than one independent channel, such as digital video recorders or picture-in-picture television receivers.

    Abstract translation:

    具有高输入阻抗的调谐器连接到一个公共射频（RF）信号源。 调谐器外部的终端负载为驱动调谐器的传输线或电缆提供匹配的阻抗负载。 或者，终端负载可以位于一个带有开关的调谐器内，以启用或禁用负载。 所有调谐器接收相同的信号，连接多个调谐器时不会造成信号衰减。 多调谐器连接在接收多于一个独立频道的电视信号接收设备中很有用，例如数字录像机或画中画电视接收机。

    CIRCUITS, SYSTEMS, AND METHODS FOR CONSTRUCTING A COMPOSITE SIGNAL
    4.
    发明申请
    CIRCUITS, SYSTEMS, AND METHODS FOR CONSTRUCTING A COMPOSITE SIGNAL 审中-公开
    用于构建复合信号的电路，系统和方法

    公开(公告)号：WO2008089315A2

    公开(公告)日：2008-07-24

    申请号：PCT/US2008/051285

    申请日：2008-01-17

    Applicant: RF MAGIC, INC. ,  BARGROFF, Keith ,  GOLDBLATT, Jeremy

    Inventor： BARGROFF, Keith ,  GOLDBLATT, Jeremy

    CPC classification number: H04H40/90

    Abstract: Circuits, systems, and methods for assembling a composite signal include a frequency translation circuit coupled to receive an input signal and operable to generate a plurality of frequency-translated versions of the input signal at a respective plurality of different frequencies, the plurality of frequency-translated input signals defining a group of frequency translated signals. The plurality of frequency translated signals may each be processed to provide a composite signal.

    Abstract translation: 用于组装复合信号的电路，系统和方法包括频率转换电路，其被耦合以接收输入信号并且可操作以在相应的多个频率转换电路中生成输入信号的多个频率转换版本 所述多个频率变换输入信号定义一组频率变换信号。 多个频率转换信号可以被处理以提供复合信号。

    SATELLITE INTERFERENCE CANCELING
    5.
    发明申请
    SATELLITE INTERFERENCE CANCELING 审中-公开

    公开(公告)号：WO2008066968A3

    公开(公告)日：2008-06-05

    申请号：PCT/US2007/072592

    申请日：2007-06-29

    Applicant: RF MAGIC, INC. ,  GOLDBLATT, Jeremy ,  BARGROFF, Keith ,  PETROVIC, Branislav

    Inventor： GOLDBLATT, Jeremy ,  BARGROFF, Keith ,  PETROVIC, Branislav

    IPC: H04B7/185

    Abstract: A satellite interference canceling system cancels the interference between two or more signals received by a satellite receiver. The signals can be two signals experiencing cross polarization interference or signals that experience interference from other satellite signals. Gain and phase are applied to the received signals and then combined with the other signals to result in cancellation by subtraction. The gain and phase values needed to cancel the interference are derived from measurements of carrier-to-noise ratio (C/N) as an indication of the interference level. The C/N can be measured in the set-top box indoor unit. Coherency restoration is performed in receivers that downconvert the signals before performing interference cancellation.

    CIRCUITS, SYSTEMS, AND METHODS FOR CONSTRUCTING A COMPOSITE SIGNAL
    6.
    发明申请
    CIRCUITS, SYSTEMS, AND METHODS FOR CONSTRUCTING A COMPOSITE SIGNAL 审中-公开
    用于构建复合信号的电路，系统和方法

    公开(公告)号：WO2008089315A9

    公开(公告)日：2008-10-30

    申请号：PCT/US2008051285

    申请日：2008-01-17

    Applicant: RF MAGIC INC ,  BARGROFF KEITH ,  GOLDBLATT JEREMY

    Inventor： BARGROFF KEITH ,  GOLDBLATT JEREMY

    CPC classification number: H04H40/90

    Abstract: Circuits, systems, and methods for assembling a composite signal include a frequency translation circuit coupled to receive an input signal and operable to generate a plurality of frequency-translated versions of the input signal at a respective plurality of different frequencies, the plurality of frequency-translated input signals defining a group of frequency translated signals. The plurality of frequency translated signals may each be processed to provide a composite signal.

    Abstract translation: 用于组合复合信号的电路，系统和方法包括频率转换电路，其被耦合以接收输入信号并且可操作以在相应的多个不同频率处产生输入信号的多个频率转换版本， 定义一组频率转换信号的转换输入信号。 可以对多个频率转换信号进行处理以提供复合信号。

    SATELLITE SIGNAL FREQUENCY TRANSLATION AND STACKING
    7.
    发明申请
    SATELLITE SIGNAL FREQUENCY TRANSLATION AND STACKING 审中-公开
    卫星信号频率翻译和堆叠

    公开(公告)号：WO2008064371A2

    公开(公告)日：2008-05-29

    申请号：PCT/US2007/089192

    申请日：2007-12-31

    Applicant: RF MAGIC, INC. ,  PETROVIC, Branislav ,  HANCOCK, Dale ,  GOLDBLATT, Jeremy ,  BARGROFF, Keith

    Inventor： PETROVIC, Branislav ,  HANCOCK, Dale ,  GOLDBLATT, Jeremy ,  BARGROFF, Keith

    CPC classification number: H04H40/90 ,  H04B1/16 ,  H04B1/28

    Abstract: An outdoor satellite receiving unit (ODU) receives several independent satellite signals, selects two signals with a switch matrix, downconverts the two signals to a bandstacked signal with a high and a low band signal, and outputs the bandstacked signal on the same cable to receiver units. Several satellite signals can be selected in groups of two or more and output to independent receiver units. Signal selecting is performed at the received radio frequency (RF) and bandstacking is performed with a single downconversion step to an intermediate frequency (IF). Channel stacking on the same cable of more than two channels from several satellites can be achieved by using frequency agile downconverters and bandpass filters prior to combining at the IF output. A slow transitioning switch minimizes signal disturbances when switching and maintains input impedance at a constant value.

    Abstract translation: 一个室外卫星接收单元（ODU）接收几个独立的卫星信号，用开关矩阵选择两个信号，将两个信号下变频成带高信号的带状信号，并将同频带上的带状信号输出到接收机 单位。 可以选择两个或更多个的几个卫星信号并输出​​到独立的接收机单元。 在接收的射频（RF）下执行信号选择，并且通过单个下变频步骤对中频（IF）执行带堆叠。 通过在IF输出组合之前，可以通过使用频率敏捷下变频器和带通滤波器来实现来自几颗卫星的多于两个信道的相同电缆上的信道堆叠。 缓慢的转换开关使切换时的信号干扰最小化，并将输入阻抗维持在恒定值。

    RECEIVER WITH TUNER FRONT END USING TRACKING FILTERS AND CALIBRATION
    8.
    发明申请
    RECEIVER WITH TUNER FRONT END USING TRACKING FILTERS AND CALIBRATION 审中-公开
    接收器与调谐器前端使用跟踪滤波器和校准

    公开(公告)号：WO2007121407A1

    公开(公告)日：2007-10-25

    申请号：PCT/US2007/066724

    申请日：2007-04-16

    Applicant: RF MAGIC, INC. ,  SHAH, Peter ,  FRANSIS, Bert ,  BARGROFF, Keith

    Inventor： SHAH, Peter ,  FRANSIS, Bert ,  BARGROFF, Keith

    IPC: H03J3/08

    CPC classification number: H03J3/08 ,  H03J2200/08 ,  H03J2200/18

    Abstract: A broadband tuner includes a tracking filter with calibration to compensate for component errors and drift. The filters use off-die inductors that are preferably within a system-in- package (SIP) with other critical tuner components, which produces a highly integrated tuner front end with high Q filters within a single package. High voltage varactors with a large tuning range can be used for variable capacitors. The integration of the tuner into a SIP allows the tuner design to be optimized for cost and performance while keeping the critical RF layout requirements within the tuner. A configurable tuner front end enables modes for low noise, high linearity, good input return loss (Sl 1) across the entire RF band, and applying a test tone in the calibration mode. The switchable mode enables the tuner to be effective during weak terrestrial reception, strong terrestrial reception, and connection to a cable plant.

    Abstract translation: 宽带调谐器包括具有校准以补偿组件误差和漂移的跟踪滤波器。 滤波器使用片外电感器，其优选地在具有其他关键调谐器部件的系统级封装（SIP）内，其在单个封装内产生高度集成的调谐器前端和高Q滤波器。 具有较大调谐范围的高压变容二极管可用于可变电容器。 将调谐器集成到SIP中可以使调谐器设计针对成本和性能进行优化，同时保持调谐器内的关键RF布局要求。 可配置的调谐器前端可以实现整个RF频段的低噪声，高线性度，良好的输入回波损耗（S1 1）模式，并在校准模式下应用测试音。 可切换模式使得调谐器在弱地面接收，强大的地面接收和与电缆厂的连接方面是有效的。

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