A Model for Stability, Noise, and Angle Modulation Analysis of Injection-Locked Oscillators

Author

Georgiadis, Apostolos

Author_Institution

Centre Tecnol. de Telecom. de Catalunya (CTTC), Barcelona

Volume

56

Issue

4

fYear

2008

fDate

4/1/2008 12:00:00 AM

Firstpage

826

Lastpage

834

Abstract

A model is presented for an injection-locked oscillator. It is derived from a perturbation of the free-running oscillator steady state, which is accurately determined from a harmonic balance (HB) simulation. As a first application, the proposed model is used to trace the existing solutions of the injection-locked system and their stability. It is then extended to include the effect of noise on the stability. Finally, the injection-locked system performance is studied under phase modulation. Sinusoidal phase modulation is considered and the stability of the modulated solutions is examined by Floquet theory. The validity of the model is verified for a 4.422-GHz oscillator, by HB and envelope transient simulations, as well as measurements.

Keywords

harmonic analysis; injection locked oscillators; microwave oscillators; noise; phase modulation; radiofrequency interference; stability; Floquet theory; angle modulation analysis; free-running oscillator steady state; frequency 4.422 GHz; harmonic balance simulation; injection-locked oscillators; phase modulation; stability model; Angle modulation; envelope transient (ET); harmonic balance (HB); injection-locked oscillator; stochastic differential equations;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2008.919061

Filename

4469998