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:
Mar. 21, 2006
Filed:
Dec. 29, 2003
Jae-wan Kim, Yongin, KR;
Jae-wan Kim, Yongin, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
Provided is a device for controlling a frequency response by scaling an impedance. The device includes a filter and a duty ratio controller. The filter generates an output signal after removing a frequency from an input signal, and comprises a first impedance component and a switch. The switch, which is serially connected to the first impedance component, is switched on or off in response to a duty-controlled clock signal. The duty ratio controller receives a clock signal, controls a duty ratio of the clock signal, and generates the duty-controlled clock signal. The duty ratio controller comprises a flip-flop, which has a clock terminal that receives the clock signal, and a reset terminal, which receives a delayed signal obtained after delaying the clock signal by a time delay. The duty ratio controller further comprises a delay component that receives the clock signal, generates the delayed signal, and controls the time delay in response to a duty control signal.