The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2018
Filed:
Apr. 14, 2017
Applicant:
Fci Inc., Seongnam-si, KR;
Inventor:
SeongHun Jeong, Sungnam, KR;
Assignee:
FCI Inc., Bundang-Gu, Seongnam-Si, Gyeonggi-Do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/06 (2006.01); H03F 3/45 (2006.01); H03G 3/30 (2006.01); H03F 3/189 (2006.01);
U.S. Cl.
CPC ...
H03F 3/45968 (2013.01); H03F 3/189 (2013.01); H03F 3/45596 (2013.01); H03F 3/45744 (2013.01); H03F 3/45748 (2013.01); H03F 3/45892 (2013.01); H03G 3/3026 (2013.01); H03G 3/3047 (2013.01); H03G 3/3052 (2013.01); H03F 2200/294 (2013.01); H03G 2201/202 (2013.01); H03G 2201/40 (2013.01);
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.