公开(公告)号：US20180248243A1

公开(公告)日：2018-08-30

申请号：US15965390

申请日：2018-04-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bingzheng Yang ,  Huizhen Qian ,  Xun Luo

IPC: H01P1/201 ,  H01P3/00 ,  H01P5/08

Abstract: A filter is provided, and the filter includes two mutually coupled slow-wave resonators. Each resonator includes a coplanar waveguide (CPW) transmission line, a tapered CPW transmission line, and a ground stub, and can generate a slow-wave feature to push a high-order harmonic wave of a baseband signal to a high frequency, so as to implement a wide stopband feature. In addition, a slow-wave effect is used to properly design a size of a filter, to reduce an entire area of the filter and reduce costs. Moreover, two resonators are coupled, to enhance passband performance of the filter, increase bandwidth, increase in-passband flatness, and reduce an insertion loss.

公开(公告)号：US10673111B2

公开(公告)日：2020-06-02

申请号：US15965390

申请日：2018-04-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bingzheng Yang ,  Huizhen Qian ,  Xun Luo

IPC: H01P1/201 ,  H01P3/00 ,  H01P1/203 ,  H01P7/08 ,  H01P5/08 ,  H01P5/02 ,  H01L23/66

Abstract: A filter is provided, and the filter includes two mutually coupled slow-wave resonators. Each resonator includes a coplanar waveguide (CPW) transmission line, a tapered CPW transmission line, and a ground stub, and can generate a slow-wave feature to push a high-order harmonic wave of a baseband signal to a high frequency, so as to implement a wide stopband feature. In addition, a slow-wave effect is used to properly design a size of a filter, to reduce an entire area of the filter and reduce costs. Moreover, two resonators are coupled, to enhance passband performance of the filter, increase bandwidth, increase in-passband flatness, and reduce an insertion loss.