公开(公告)号：US20090075595A1

公开(公告)日：2009-03-19

申请号：US12233422

申请日：2008-09-18

申请人： Alan N. WILLSON, JR. ,  Tzu-Chieh Kuo

发明人： Alan N. WILLSON, JR. ,  Tzu-Chieh Kuo

IPC分类号： H04B7/00

CPC分类号： H04L27/0002 ,  H03M1/661 ,  H03M1/662

摘要： A method and system for the design and implementation of an inverse-sinc function that can efficiently process signals produced by high-speed systems is presented. An integrated inverse-sinc module accepts multiple data streams that may result from parallel sub-systems and creates multiple outputs that can be interleaved to produce a sequence that has been filtered by an inverse-sinc function. The multiple-input, multiple-output system may be beneficially operated at a low data rate, such as the data rate used by each of the sub-systems.

摘要翻译： 提出了一种用于设计和实现可以有效处理由高速系统产生的信号的反相函数的方法和系统。 集成的反sinc模块接受可能由并行子系统产生的多个数据流，并创建可以进行交织的多个输出，以产生已被反向sinc函数过滤的序列。 多输入多输出系统可以以低数据速率有利地操作，诸如由每个子系统使用的数据速率。

公开(公告)号：US20100100576A1

公开(公告)日：2010-04-22

申请号：US12185062

申请日：2008-08-01

申请人： Alan N. WILLSON, JR.

发明人： Alan N. WILLSON, JR.

IPC分类号： G06F17/10

CPC分类号： H03H17/0211 ,  H03H17/0225 ,  H03H17/06 ,  H03H17/0657 ,  H03H2017/0692 ,  H03H2218/08

摘要： A method and system for the design and implementation of filters is presented in which the filter's transfer function can be provided with a significant insensitivity to the filter's tap coefficient values. A desensitized digital filter includes a first halfband filter and a second filter coupled in cascade between an input of the digital filter and the output of the digital filter. In embodiments, the first filter has the transfer function F(z)=K(1+z−1)(1+z−1) wherein K≠0 is a scale factor. The digital filter may also interact with an up-sampler or a down-sampler. A desensitized Hilbert transformer includes an FIR filter having filter-tap coefficients whose absolute values equal the absolute values of the coefficients of an FIR filter F(z) for which the product (1+z−1)F(z) is a halfband filter coupled in cascade with a second filter.

摘要翻译： 提出了一种用于设计和实现滤波器的方法和系统，其中滤波器的传递函数可以对滤波器的抽头系数值具有显着的不敏感性。 脱敏数字滤波器包括在数字滤波器的输入和数字滤波器的输出之间级联耦合的第一半带滤波器和第二滤波器。 在实施例中，第一滤波器具有传递函数F（z）= K（1 + z-1）（1 + z-1）其中K≠0是比例因子。 数字滤波器也可以与上采样器或下采样器相互作用。 脱敏希尔伯特变换器包括具有滤波器抽头系数的FIR滤波器，其绝对值等于乘积（1 + z-1）F（z）是半频带滤波器的FIR滤波器F（z）的系数的绝对值 与第二滤波器级联耦合。

公开(公告)号：US20100235420A1

公开(公告)日：2010-09-16

申请号：US12731122

申请日：2010-03-24

申请人： Alan N. WILLSON, JR.

发明人： Alan N. WILLSON, JR.

IPC分类号： G06F17/17

CPC分类号： H03H17/0211 ,  H03H17/0225 ,  H03H17/06 ,  H03H17/0657 ,  H03H2017/0692 ,  H03H2218/08

摘要： A method and system for the design and implementation of desensitized digital filters with droop correction. The desensitized digital filter includes a first filter configured to receive an input signal, a decimator or upsampler, and a modified desensitized half-band filter. The first filter introduces droop into the passband of the desensitized digital filter. The desensitized half-band filter has a transfer function F(z)=K(1+z−1)G(z) wherein K≠0 is a scale factor, that is modified to omit a (1+z−1) factor block. The modified desensitized half-band filter compensates for the passband droop introduced by the first filter. The first filter may be a sinc filter, CIC filter, or filter having similar properties.

摘要翻译： 一种用于设计和实现具有下垂校正的脱敏数字滤波器的方法和系统。 脱敏数字滤波器包括被配置为接收输入信号的第一滤波器，抽取器或上采样器和修改的去敏化半带滤波器。 第一个滤波器将下垂引入到脱敏数字滤波器的通带中。 脱敏半带滤波器具有传递函数F（z）= K（1 + z-1）G（z）其中K≠0是比例因子，其被修改为省略（1 + z-1）因子 块。 经修正的脱敏半带滤波器补偿由第一滤波器引入的通带下降。 第一过滤器可以是具有相似特性的sinc过滤器，CIC过滤器或过滤器。