SNDT WOMEN'S UNIVERSITY

BMK Knowledge Resource Centre

Vithaldas Vidyavihar, Juhu Tara Road,
Santacruz (West) Mumbai - 400049

Design and Analysis of High Speed Phase Frequency Detector with Zero Dead Zone in PLL

By: Description: p1190-1198Subject(s): In: IETE Journal of Research New Delhi IETESummary: This paper presents a proposed phase frequency detector (PFD) designed by using the 180-nm CMOS process. Adding an extra buffer to the typical D flipflop-based PFD solves the dead zone (DZ) problem, however the frequency of operation is reduced. The proposed design of PFD eliminates the dead zone (DZ) and reduces the blind zone (BZ) significantly by developing the independent relationship between the blind zone (BZ) and the dead zone (DZ). Moreover, the proposed architecture helps to increase the operating frequency compared to the conventional architecture. The reset time of the proposed PFD requires one NAND gate, one AND gate, and an OR gate, whereas conventional PFDs require one D flipflop, one AND gate, and a delay element, which limits the frequency of operation in conventional architecture. The proposed architecture achieves 135 ps of reset time and 95 ps of delay time at the maximum operating frequency of 4.3 GHz. The phase noise of the proposed architecture is −143.2 dBc/Hz with 1 MHz offset at 4 GHz. The PLL is designed using the proposed PFD architecture with an reference frequency of 4 GHz and the phase noise is −110 dBc/Hz at a 1.5 MHz offset frequency.
Tags from this library: No tags from this library for this title. Log in to add tags.
Star ratings
    Average rating: 0.0 (0 votes)
Holdings
Item type Current library Call number Vol info Status Barcode
Journal Article SNDT Juhu Available JP865.9
Periodicals SNDT Juhu 321.381/IETE (Browse shelf(Opens below)) Vol. 71, No. 4 (01/04/2025) Available JP865

This paper presents a proposed phase frequency detector (PFD) designed by using the 180-nm CMOS process. Adding an extra buffer to the typical D flipflop-based PFD solves the dead zone (DZ) problem, however the frequency of operation is reduced. The proposed design of PFD eliminates the dead zone (DZ) and reduces the blind zone (BZ) significantly by developing the independent relationship between the blind zone (BZ) and the dead zone (DZ). Moreover, the proposed architecture helps to increase the operating frequency compared to the conventional architecture. The reset time of the proposed PFD requires one NAND gate, one AND gate, and an OR gate, whereas conventional PFDs require one D flipflop, one AND gate, and a delay element, which limits the frequency of operation in conventional architecture. The proposed architecture achieves 135 ps of reset time and 95 ps of delay time at the maximum operating frequency of 4.3 GHz. The phase noise of the proposed architecture is −143.2 dBc/Hz with 1 MHz offset at 4 GHz. The PLL is designed using the proposed PFD architecture with an reference frequency of 4 GHz and the phase noise is −110 dBc/Hz at a 1.5 MHz offset frequency.

There are no comments on this title.

to post a comment.