Title:
VARIABLE RESISTER HAVING RESISTANCE VARYING GEOMETRICALLY RATIO AND CONTROL METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2012/015224
Kind Code:
A2
Abstract:
Provided is an analog amplifier for amplifying an analog signal and an analog filter, and in particular, an apparatus and method for controlling gain and cutoff frequency of the variable gain amplifier and the variable cutoff frequency filter that is capable of changing the gain and cutoff frequency. The variable resister includes a plurality of resister segments in the variable resister and, when a plurality of resistance candidates for the variable resister are arranged in order of size, the resistance candidates form a geometric series.
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Inventors:
LEE, Jongwoo (No. 507-703, Cheongsolmaeul 125,,Geumgok-dong, Bundang-gu, Seongnam-si Gyeonggi-do 463-722, KR)
Application Number:
KR2011/005507
Publication Date:
February 02, 2012
Filing Date:
July 26, 2011
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO., LTD. (416, Maetan-dong Yeongtong-gu, Suwon-si Gyeonggi-do 443-742, KR)
LEE, Jongwoo (No. 507-703, Cheongsolmaeul 125,,Geumgok-dong, Bundang-gu, Seongnam-si Gyeonggi-do 463-722, KR)
LEE, Jongwoo (No. 507-703, Cheongsolmaeul 125,,Geumgok-dong, Bundang-gu, Seongnam-si Gyeonggi-do 463-722, KR)
International Classes:
H03G3/30; H03H7/24
Attorney, Agent or Firm:
YOON, Dong Yol (YOON & LEE International Patent & Law Firm, 3rd Fl Ace Highend Tower-5 505-18 Gasan-dong, Geumcheon-gu, Seoul 153-803, KR)
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Claims:
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