한국지능시스템학회:학술대회논문집 (Proceedings of the Korean Institute of Intelligent Systems Conference)
- 한국퍼지및지능시스템학회 2006년도 춘계학술대회 학술발표 논문집 제16권 제1호
- /
- Pages.302-305
- /
- 2006
지능형 AGC 회로 설계
Intelligent AGC Circuit Design
- Zhang Liang (School of Information Technology at Korea University of Technology and Education) ;
- Kim Jong-Won (School of Information Technology at Korea University of Technology and Education) ;
- Seo Jae-Yong (School of Information Technology at Korea University of Technology and Education) ;
-
Cho Hyun-Chan
(School of Information Technology at Korea University of Technology and Education)
;
- Jeong Goo-Chul (School of Information Technology at Korea University of Technology and Education)
- 발행 : 2006.05.01
초록
A problem that arises in most communication receivers concerns the wide variation in power level of the signals received at the antenna. These variations cause serious problems which can usually be solved in receiver design by using Automatic Gain Control (AGC). AGC is achieved by using an amplifier whose gain can be controlled by external current or voltage. However, the AGC circuit does not respond to rapid changes in the amplitude of input. If input changes instantaneously, then even if op-amps could follow the change, the envelope detector capacitor could not, since the capacitor's voltage could not change instantaneously. To alleviate this deficiency, we present Improved Automatic Gain Control Circuit (IAGCC) replacing AGC circuit to FLC.