원문정보
A Design of small size Ring-Oscillator VCO for Digital Phase Locked Loop(DPLL)
초록
영어
PLL(Phase-locked loop) is necessary in various field, for example, Radio communication system and Microprocessor. Also, it is important component to product receiver or transmitter. VCO(Voltage Controlled Oscillator) occurs sine wave or square wave which is depends on frequency controlled voltage. In addition, VCO is widely used frequency synthesize and clock restoration. It is the key of the PLL block diagram. This paper will explain VCO`s CMOS integrated circuit about mainly activate GHz band. APLL(Analog Phase-locked Loop) is in common use in VCO, but I will show the special VCO on DPLL(Digital Phase- locked Loop) which is more small than normal VCO. This paper consists of introduction, Ⅱ. The Structure of Ring-Oscillator VCO, Ⅲ. Simulation and Ⅳ. Conclusion.
목차
I. 서론
II. DPLL에 적용 가능한 소형 Ring-Oscillator VCO
1. PLL의 구조
2. DPLL(Digital Phase-locked Loop)
3. Ring-Oscillator VCO의 구조
III. 시뮬레이션 결과
IV. 결론 및 향후 연구 방향