Programmable filter circuits and methods
    1.
    发明公开
    Programmable filter circuits and methods 有权
    ProgrammierbareFilterkreisläufeund Verfahren

    公开(公告)号:EP2081294A1

    公开(公告)日:2009-07-22

    申请号:EP08000773.5

    申请日:2008-01-16

    申请人: WiLinx, Inc.

    IPC分类号: H03H15/02

    CPC分类号: H03H15/02

    摘要: Embodiments of the present invention include programmable filter circuits and methods. In one embodiment, the present invention includes a programmable filter for filtering an input signal x(t) comprising a storage element (401) for storing a plurality of digital values representing a discrete time window function, and a plurality of filter channels, each channel comprising a multiplying digital-to-analog converter (402) having a plurality of digital inputs (N) coupled to the storage element and an analog input for receiving said input signal to be filtered, at least one capacitor (403) having at least one terminal coupled to an output of the multiplying digital-to-analog converter, and a sampling device (404) coupled between the at least one terminal of the at least one capacitor and an output of the filter. In another embodiment, the present invention includes a software defined radio.

    摘要翻译: 本发明的实施例包括可编程滤波器电路和方法。 在一个实施例中,本发明包括一个可编程滤波器,用于对输入信号x(t)进行滤波,该输入信号包括存储元件(401),用于存储表示离散时间窗函数的多个数字值,以及多个滤波器通道,每个通道 包括具有耦合到所述存储元件的多个数字输入(N)和用于接收所述待滤波的所述输入信号的模拟输入的乘法数模转换器(402),至少一个电容器(403)具有至少一个 耦合到所述乘法数模转换器的输出的一个端子,以及耦合在所述至少一个电容器的所述至少一个端子和所述滤波器的输出端之间的采样装置(404)。 在另一个实施例中,本发明包括软件定义的无线电装置。