Keywords

Phase noise modeling, Second-order and fifth-order PLLs, Closed-loop stability analysis, PLL loop filter design parameters, Local oscillator phase noise impact on receiver performance

Abstract

This research report presents an introduction into phase lock loops (PLL) with a major emphasis on calculating phase noise in frequency synthesizers. A PLL model that incorporates the major sources of noise is presented for the purpose of design analysis. The model can be used to analyze second and fifth order PLLs which allows the accurate calculation of phase noise as a function of independent variable design parameters. The stability of PLLs is also analyzed to show the effects of a marginally stable system on the resultant phase noise. Developing an accurate PLL model which accounts for the major sources of noise and insures a stable closed loop system is the basis for calculating the phase noise of PLLs. Accurately specifying and then calculating the phase noise performance of PLLs, which are often used as local oscillators (LO) in receiver systems, is an important capability which insures the local oscillators are not the limiting factor in receiver system performance.

Notes

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Graduation Date

1988

Semester

Summer

Advisor

Malocha, Donald

Degree

Master of Science (M.S.)

College

College of Engineering

Department

Electrical Engineering and Communication Sciences

Format

PDF

Pages

52 pages

Language

English

Rights

Public Domain

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Identifier

DP0025759

Subjects

Dissertations; Academic -- Engineering; Engineering -- Dissertations; Academic; Phase-locked loops--Mathematical models; Phase-locked loops--Design and construction; Frequency synthesizers--Design and construction; Electronic noise--Mathematical models; Stability--Analysis

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This item was created or digitized prior to April 24, 2026, or is a reproduction of legacy media created before that date. It is preserved in its original, unmodified state specifically for research, reference, or historical recordkeeping. In accordance with the ADA Title II Final Rule, the University Libraries provides accessible versions of archival materials upon request. To request an accommodation for this item, please submit an accessibility request form.