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169 条记录 (耗时 0.013 秒)

    Tuner and front-end circuit thereof
    97.
    发明授权
    Tuner and front-end circuit thereof 有权
    调谐器及其前端电路

    公开(公告)号：US08836447B2

    公开(公告)日：2014-09-16

    申请号：US12845103

    申请日：2010-07-28

    申请人： Fucheng Wang ,  Yi Lu ,  Chung-Yun Chou

    发明人： Fucheng Wang ,  Yi Lu ,  Chung-Yun Chou

    IPC分类号： H04B3/04 ,  H03J3/20 ,  H03J3/06

    CPC分类号： H03J3/06 ,  H03J3/20

    摘要： A tuner includes a plurality of paths, and at least one of the paths includes a front-end filter circuit, an amplifier, and a trace filter. The trace filter includes a varactor and an inductor, which are coupled to an output end of the amplifier. Further, the amplifier and the varactor of the tuner are packed in a complementary metal-oxide semiconductor (CMOS) chip.

    摘要翻译： 调谐器包括多个路径，并且至少一个路径包括前端滤波器电路，放大器和跟踪滤波器。 轨迹滤波器包括变容二极管和电感器，其耦合到放大器的输出端。 此外，调谐器的放大器和变容二极管被包装在互补金属氧化物半导体（CMOS）芯片中。

    FINE GAIN TUNING
    98.
    发明申请
    FINE GAIN TUNING 有权
    精细增益调谐

    公开(公告)号：US20120142294A1

    公开(公告)日：2012-06-07

    申请号：US13387893

    申请日：2010-07-16

    申请人： Sever Cercelaru

    发明人： Sever Cercelaru

    IPC分类号： H04B1/16 ,  H03G3/00

    CPC分类号： H03J3/06

    摘要： A circuit tuneable between first and second frequencies comprising gain control circuitry operable to control the gain of the circuit between the first and second frequencies, the gain control circuitry comprising a resistor network having: at least two resistor lines arranged in parallel, each resistor line comprising one or more resistors; and for each resistor line, a switch operable to select or deselect the corresponding resistor line; the resistor lines and switches being arranged such that the net resistance of the resistor network is the parallel sum of each of the selected resistor lines; and logic circuitry configured to control said switches so as to minimise the variation in gain of the circuit between the first and second frequencies.

    摘要翻译： 可在第一和第二频率之间调谐的电路，包括可操作以控制第一和第二频率之间的电路的增益的增益控制电路，增益控制电路包括具有：至少两个并联布置的电阻线的电阻网络，每个电阻线包括 一个或多个电阻; 并且对于每个电阻线，开关可操作以选择或取消选择相应的电阻线; 电阻器线路和开关被布置为使得电阻器网络的净电阻是所选择的电阻器线中的每一个的并联和; 以及逻辑电路，被配置为控制所述开关，以便最小化所述第一和第二频率之间的所述电路的增益的变化。

    Tuner and transformer formed by printed circuit board thereof
    99.
    发明授权
    Tuner and transformer formed by printed circuit board thereof 有权
    调谐器及其印刷电路板形成的变压器

    公开(公告)号：US08188806B2

    公开(公告)日：2012-05-29

    申请号：US11939716

    申请日：2007-11-14

    申请人： Wen-Po Ho ,  Shun-Chi Chuang

    发明人： Wen-Po Ho ,  Shun-Chi Chuang

    IPC分类号： H03H7/38 ,  H03J3/20

    CPC分类号： H03J3/20 ,  H03H7/38 ,  H03J3/06 ,  H03J3/185 ,  H03J3/24

    摘要： A tuner and a transformer formed by printed circuit board thereof are provided. The transformer includes a first winding and a second winding. In which, the first winding forms a first inductor and the second winding forms a second inductor. The transformer is formed by the first and the second inductors, wherein the first winding and the second winding are formed by conducting wires of a printed circuit board.

    摘要翻译： 提供了由其印刷电路板形成的调谐器和变压器。 变压器包括第一绕组和第二绕组。 其中，第一绕组形成第一电感器，第二绕组形成第二电感器。 变压器由第一和第二电感器形成，其中第一绕组和第二绕组由印刷电路板的导线形成。

    Switch-able band-tracking input filter for combination tuner
    100.
    发明授权
    Switch-able band-tracking input filter for combination tuner 失效
    用于组合调谐器的可切换带通跟踪输入滤波器

    公开(公告)号：US08155609B2

    公开(公告)日：2012-04-10

    申请号：US11574972

    申请日：2005-09-02

    申请人： Yeow T. Toh ,  Kam C. Kwong

    发明人： Yeow T. Toh ,  Kam C. Kwong

    IPC分类号： H04B1/18

    CPC分类号： H03J5/244 ,  H03J3/06

    摘要： The present invention relates to a combination RF tuner capable of receiving signals from the FM radio band and from the TV band. Prior art combination tuners had to compromise in quality resulting in combination tuners that neither exhibited high-end FM nor TV-signal reception behavior. A combination RF tuner capable of optimal receiving an FM-radio signal type and a TV signal type, comprising a switch-able tuned input filter (440), is proposed. One response of the input filter (440) provides a sufficient big bandwidth for enabling reception of the TV-signal type. The input filter (440) of the invention can be switched, providing a second response that has a smaller bandwidth for enabling reception of the FM-radio signal type. The second response can be realized by substantially bypassing an 10 inductive element (450) (e.g., comprising a inductor, L21, in series with a damping resistor, R3) of the input filter (440).

    摘要翻译： 本发明涉及能够从FM无线电频带和TV频带接收信号的组合RF调谐器。 现有技术的组合调谐器必须在质量上妥协，导致组合调谐器既不显示高端FM也不显示TV信号接收行为。 提出了能够最佳地接收FM无线电信号类型和TV信号类型的组合RF调谐器，其包括可切换调谐的输入滤波器（440）。 输入滤波器（440）的一个响应提供足够大的带宽以便能够接收TV信号类型。 可以切换本发明的输入滤波器（440），提供具有较小带宽的第二响应，以使得能够接收FM无线电信号类型。 第二响应可以通过基本上绕过输入滤波器（440）的10个感应元件（450）（例如，包括与阻尼电阻器R3串联的电感器L21）来实现。