公开(公告)号：US20170302238A1

公开(公告)日：2017-10-19

申请号：US15488365

申请日：2017-04-14

Applicant: FCI Inc.

Inventor： SeongHun Jeong

IPC: H03F3/45 ,  H03G3/30 ,  H03F3/189

CPC classification number: H03G3/3052 ,  H03F3/19 ,  H03F3/45475 ,  H03F3/45973 ,  H03F2200/294 ,  H03F2203/45521 ,  H03G3/001 ,  H03G3/3068 ,  H03G2201/202 ,  H03G2201/40

Abstract: Disclosed herein is a DC offset cancellation circuit. The DC offset cancellation circuit includes a DC feedback unit configured to vary a DC feedback (DCFB) bandwidth to add at least one mid-bandwidth to the DCFB bandwidth and to provide a delay time in each case in order to reduce the DC droop error that occurs in switching from the high bandwidth (BW) to the mid-BW or from the mid-BW mode to the low BW mode, such that stable settling is ensured.

公开(公告)号：US09859857B2

公开(公告)日：2018-01-02

申请号：US15488365

申请日：2017-04-14

Applicant: FCI Inc.

Inventor： SeongHun Jeong

IPC: H04B1/06 ,  H03F3/45 ,  H03G3/30 ,  H03F3/189

CPC classification number: H03G3/3052 ,  H03F3/19 ,  H03F3/45475 ,  H03F3/45973 ,  H03F2200/294 ,  H03F2203/45521 ,  H03G3/001 ,  H03G3/3068 ,  H03G2201/202 ,  H03G2201/40

Abstract: Disclosed herein is a DC offset cancellation circuit. The DC offset cancellation circuit includes a DC feedback unit configured to vary a DC feedback (DCFB) bandwidth to add at least one mid-bandwidth to the DCFB bandwidth and to provide a delay time in each case in order to reduce the DC droop error that occurs in switching from the high bandwidth (BW) to the mid-BW or from the mid-BW mode to the low BW mode, such that stable settling is ensured.

公开(公告)号：US10110260B2

公开(公告)日：2018-10-23

申请号：US15581767

申请日：2017-04-28

Applicant: FCI INC.

Inventor： SeongHun Jeong ,  Heeyoung Yoo

IPC: H04B1/40 ,  H04B1/02 ,  H04B1/04

Abstract: A transmitter for wireless communications can remove a signal having an image frequency without using a band pass filter, and can be downsized such that it is integrated into a single chip on an integrated circuit board.