公开(公告)号：US09698738B2

公开(公告)日：2017-07-04

申请号：US15004474

申请日：2016-01-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seon-Ho Han ,  Cheon-Soo Kim ,  Nam Nguyen Hoai ,  Ki-Su Kim

IPC: H03F1/32 ,  H03H11/04 ,  H03F3/193 ,  H03F3/45 ,  H03G5/28

CPC classification number: H03F1/3241 ,  H03F1/3211 ,  H03F3/193 ,  H03F3/45179 ,  H03F3/45475 ,  H03F2200/451 ,  H03G5/28 ,  H03H11/0466 ,  H03H11/0472

Abstract: A bandpass filter that provides a wide gain control range is provided. The bandpass filter performs channel filtering and gain control while maintaining the bandpass characteristic of the bandpass filter. The bandpass filter enables gain control for a wide signal amplitude range while maintaining performance characteristics, such as an out-of-band attenuation ratio capable of high linearity and good pass-band flatness.