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    • 1. 发明授权
    • Multiphase local oscillator generator circuit for a broadband tuner device
    • 用于宽带调谐器设备的多相本地振荡器发生器电路
    • US08583072B1
    • 2013-11-12
    • US13324878
    • 2011-12-13
    • Alexandru A. CiubotaruJerry T. Bolton, Jr.Steven P. Hoggarth
    • Alexandru A. CiubotaruJerry T. Bolton, Jr.Steven P. Hoggarth
    • H04B1/16
    • H03L7/0995H03J1/0008H03K3/0322
    • Embodiments of integrated circuits for use in a broadband tuner are described. In one embodiment, an integrated circuit includes a clock buffer configured to buffer a received clock signal and generate a buffered clock signal. Additionally, the integrated circuit includes a multiphase local oscillator core coupled to the clock buffer and configured to generate a plurality of oscillator signals in response to the buffered clock signal, each of the plurality of oscillator signals being mutually phase shifted. The integrated circuit may also include a plurality of output buffers, each configured to receive one of the plurality of oscillator signals and to produce an output signal suitable for use in a broadband tuner circuit in response to the one of the plurality of oscillator signals.
    • 描述了用于宽带调谐器的集成电路的实施例。 在一个实施例中,集成电路包括被配置为缓冲接收到的时钟信号并产生缓冲的时钟信号的时钟缓冲器。 此外,集成电路包括耦合到时钟缓冲器的多相本地振荡器芯,并且被配置为响应于所缓冲的时钟信号产生多个振荡器信号,所述多个振荡器信号中的每一个相互相移。 集成电路还可以包括多个输出缓冲器,每个输出缓冲器被配置为接收多个振荡器信号中的一个并且响应于多个振荡器信号之一产生适合于在宽带调谐器电路中使用的输出信号。
    • 3. 发明授权
    • Supply tracking temperature independent reference voltage generator
    • 电源跟踪温度独立参考电压发生器
    • US5726563A
    • 1998-03-10
    • US747182
    • 1996-11-12
    • Jerry T. Bolton, Jr.
    • Jerry T. Bolton, Jr.
    • G05F3/26G05F3/30G05F3/16
    • G05F3/267G05F3/30
    • A reference voltage generator (100) generates a constant offset reference voltage (125) relative to a reference ground voltage (115) that tracks supply voltage (105). The supply voltage (105) is scaled to derive the reference ground voltage (115). A scaled voltage output (135) is derived from a temperature and supply independent voltage source, such as a bandgap voltage generator. The scaled voltage output (135) is summed with the reference ground voltage (115) to generate the constant offset reference voltage (125). The summing function is preferably performed by an operational amplifier (220) having an input (221) coupled to the scaled voltage output by a MOSFET transistor (242), and another input (222) coupled to the reference ground voltage (115).
    • 参考电压发生器(100)相对于跟踪电源电压(105)的参考接地电压(115)产生恒定的偏移参考电压(125)。 电源电压(105)被缩放以导出参考接地电压(115)。 缩放电压输出(135)源于温度和电源独立电压源,例如带隙电压发生器。 缩放的电压输出(135)与参考接地电压(115)相加以产生恒定的偏移参考电压(125)。 求和功能优选由具有耦合到由MOSFET晶体管(242)输出的定标电压的输入(221)和耦合到参考接地电压(115)的另一输入端(222)的运算放大器(220)执行。
    • 4. 发明授权
    • Method and apparatus for improving signal reception in a receiver
    • 一种用于改善接收机中的信号接收的方法和装置
    • US07684516B2
    • 2010-03-23
    • US11380892
    • 2006-04-28
    • Raul SalviJerry T. Bolton, Jr.Charles R. Ruelke
    • Raul SalviJerry T. Bolton, Jr.Charles R. Ruelke
    • H03K9/00
    • H04L25/062
    • A method and apparatus for improving signal reception in a receiver (100) by performing all-channel and/or on-channel estimations on a received signal so as to predict future RF environments. The prediction is achieved through the use of one or more detector systems (122, 124) positioned to sample and detect predetermined signal metrics of the received signal (103) prior to analog-to-digital conversion (112) and subsequent post-processing (114). Future estimations of the channel condition are thus generated prior to the arrival of the actual samples (115) at a controller section (116). The detectors (122, 124) provide triggers (123, 125) to the controller (116) so that active stages (130) within the receiver (100) can be adjusted and scaled as needed via a serial port interface (SPI) (126) based on signal conditions.
    • 一种用于通过对接收到的信号进行全通道和/或通道上估计来改善接收器(100)中的信号接收以预测将来的RF环境的方法和装置。 通过使用一个或多个检测器系统(122,124)来实现预测,所述检测器系统定位成在模数转换(112)和随后的后处理(112)之后采样和检测接收信号(103)的预定信号度量, 114)。 因此,在实际样本(115)到达控制器部分(116)之前生成信道条件的未来估计。 检测器(122,124)向控制器(116)提供触发(123,125),使得可以根据需要通过串行端口接口(SPI)(126)来调整和缩放接收器(100)内的有源级(130) )基于信号条件。