公开(公告)号：US09871487B2

公开(公告)日：2018-01-16

申请号：US15125148

申请日：2015-03-13

Applicant: MEDIATEK INC.

Inventor： Ying-Tsang Lu ,  Chih-Ming Hung ,  Meng-Chang Lee

IPC: H03K5/00 ,  H03D7/04 ,  H03D7/14 ,  H03H11/04

CPC classification number: H03D7/1483 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D2200/0086 ,  H03H11/0405 ,  H03H11/0466 ,  H03H19/002

Abstract: A harmonic translational filter includes a first path, a second path and a signal combiner. The first path has a first translational filter that is driven by a plurality of first oscillation signals, and is arranged to generate a first output signal according to an input signal. The second path has a second translation filter that is driven by a plurality of second oscillation signals that are different from the first oscillation signals in phase. The second path is coupled to the first path and arranged to generate a second output signal according to the input signal. The signal combiner is coupled to the first path and the second path, and arranged to combine the first output signal and the second output signal to generate a filtered signal.

公开(公告)号：US10084433B2

公开(公告)日：2018-09-25

申请号：US15125145

申请日：2015-03-13

Applicant: MEDIATEK INC.

Inventor： Ying-Tsang Lu ,  Chih-Ming Hung ,  Meng-Chang Lee

IPC: H03K5/00 ,  H03H19/00 ,  H04L25/02 ,  H03D7/16

CPC classification number: H03H19/002 ,  H03D7/165 ,  H04L25/0278

Abstract: In accordance with an embodiment, a feedforward filter includes a first path, at least one second path and a signal combiner. The first path has a first translational filter, and employed for providing a first frequency response and generating a first output in response to an input signal based on the first frequency response. The at least one second path has a second translational filter and is coupled to the first path. The at least one second path is employed for providing a second frequency response that is different from the first frequency response to the input signal, and generating at least one second output in response to the input signal based on the second frequency response. The signal combiner is coupled to the first path and the second path, and employed for combining the first output and the at least one second output to generate a filtered signal.

公开(公告)号：US20160380618A1

公开(公告)日：2016-12-29

申请号：US15125145

申请日：2015-03-13

Applicant: MEDIATEK INC.

Inventor： Ying-Tsang Lu ,  Chih-Ming Hung ,  Meng-Chang Lee

IPC: H03H19/00 ,  H03D7/16

CPC classification number: H03H19/002 ,  H03D7/165 ,  H04L25/0278

Abstract: Described in embodiments herein are techniques for realizing filters having a variety of frequency responses, such as multiple pass-bands, high out-of-band rejection, without complicated designs. In accordance with an embodiment, a feedforward filter includes a first path, at least one second path and a signal combiner. The first path has a first translational filter, and employed for providing a first frequency response and generating a first output in response to an input signal based on the first frequency response. The at least one second path has a second translational filter and is coupled to the first path. The at least one second path is employed for providing a second frequency response that is different from the first frequency response to the input signal, and generating at least one second output in response to the input signal based on the second frequency response. The signal combiner is coupled to the first path and the second path, and employed for combining the first output and the at least one second output to generate a filtered signal.

Abstract translation: 在本文的实施例中描述的是用于实现具有各种频率响应的滤波器的技术，例如多个通带，高带外抑制，而没有复杂的设计。 根据实施例，前馈滤波器包括第一路径，至少一个第二路径和信号组合器。 第一路径具有第一平移滤波器，并且用于提供第一频率响应并且响应于基于第一频率响应的输入信号产生第一输出。 所述至少一个第二路径具有第二平移滤波器并耦合到第一路径。 所述至少一个第二路径用于提供不同于对输入信号的第一频率响应的第二频率响应，以及响应于基于第二频率响应的输入信号而生成至少一个第二输出。 信号组合器耦合到第一路径和第二路径，并且用于组合第一输出和至少一个第二输出以产生滤波信号。

公开(公告)号：US20160380593A1

公开(公告)日：2016-12-29

申请号：US15125148

申请日：2015-03-13

Applicant: MEDIATEK INC.

Inventor： Ying-Tsang Lu ,  Chih-Ming Hung ,  Meng-Chang Lee

IPC: H03D7/14 ,  H03H11/04

CPC classification number: H03D7/1483 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D2200/0086 ,  H03H11/0405 ,  H03H11/0466 ,  H03H19/002

Abstract: A harmonic-rejection translational filter includes: a first path, a second path and a signal combiner. The first path has a first translational filter that is driven by a plurality of first oscillation signals, and is arranged to generate a first output signal according to an input signal. The second path has a second translation filter that is driven by a plurality of second oscillation signals that are different from the first oscillation signals in phase. The second path is coupled to the first path and arranged to generate a second output signal according to the input signal. The signal combiner is coupled to the first path and the second path, and arranged to combine the first output signal and the second output signal to SIN generate a filtered signal.

Abstract translation: 谐波抑制平移滤波器包括：第一路径，第二路径和信号组合器。 第一路径具有由多个第一振荡信号驱动的第一平移滤波器，并且被布置为根据输入信号产生第一输出信号。 第二路径具有由同相中的第一振荡信号不同的多个第二振荡信号驱动的第二平移滤波器。 第二路径被耦合到第一路径并且被布置成根据输入信号产生第二输出信号。 信号组合器耦合到第一路径和第二路径，并且被布置为将第一输出信号和第二输出信号组合以产生滤波信号。