The Digital controlled oscillator (DCO) is the core element of all digital phase locked loop (ADPLL) system. Here, we propose DCO structures with digital control, reduced hardware and low power consumption. Different DCOs are based on ring based topology having 3, 4 & 5 control bits. Number of control bits can be increased as per the requirement of output frequency range. DCOs using XOR as an inverter having NMOS and PMOS transistors in pull up and pull down switching networks are presented. Three bit DCO with NMOS control network shows frequency variations of [3.1763 - 3.5290] GHz with power consumption variations of [266.8491 - 293.6420] μW. Three bit DCO with PMOS network shows frequency variation of [1.9918 - 1.4313] GHz with power consumption variation of [46.1176 - 22.8450] μW. Four bit DCO with NMOS & PMOS control networks shows frequency variations of [3.2219 - 3.6114] GHz & [2.1328 - 1.4627] GHz respectively. Power consumption variations of [266.8491 - 294.9430] μW & [53.5188 - 22.8454] μW have been obtained for 4-bit DCO having NMOS & PMOS switch networks respectively. Finally the five bit DCO with NMOS & PMOS network shows output frequency range of [3.3050 - 3.5557] & [2.2579 - 1.4934] GHz. Power consumption of [266.8491 - 295.5983] μW & [61.3773 - 22.8453] μW have been reported with NMOS & PMOS network for 5-bit controlled DCO. Comparisons with earlier reported circuits have been made and reported design shows improvement over previous circuits.
목차
Abstract 1. Introduction 2. System Description 3. Results and Discussions 4. Conclusions References
키워드
Digital control oscillator (DCO)delay cellpower consumptionvoltage controlled oscillator (VCO)XOR gate
저자
Manoj Kumar [ Department of Electronics & Communication Engineering Guru Jambheshwar University of Science & Technology, Hisar, India ]
Sandeep K. Arya [ Department of Electronics & Communication Engineering Guru Jambheshwar University of Science & Technology, Hisar, India ]
보안공학연구지원센터(IJSH) [Science & Engineering Research Support Center, Republic of Korea(IJSH)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Smart Home
간기
격월간
pISSN
1975-4094
수록기간
2008~2016
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Smart Home Vol.6 No.1