Semi-analytical formulation for the analysis and reduction of injection-pulling in front-end oscillators

Author

Domínguez, J. ; Suárez, A. ; Sancho, S.

Author_Institution

Dipt. Ing. de Comun., Univ. de Cantabria, Santander, Spain

fYear

2009

fDate

7-12 June 2009

Firstpage

1589

Lastpage

1592

Abstract

Injection pulling by interference signals is an undesired phenomenon in front-end oscillators, which causes a shift of the oscillation frequency and degrades the output spectrum. This paper presents a semi-analytical formulation for the insightful analysis of injection-pulling phenomena in the presence of a modulated carrier or chirp signal. The formulation enables an efficient analysis of interference problems difficult to simulate with harmonic balance or standard envelope transient. It allows the modification of the original design in order to reduce the injection pulling to the desired levels. The techniques have been applied to an oscillator at 6 GHz.

Keywords

interference (signal); oscillators; chirp signal; frequency 6 Hz; front-end oscillators; harmonic balance; injection pulling; interference problems; interference signals; modulated carrier; semianalytical formulation; standard envelope transient; Analytical models; Chirp modulation; Circuit simulation; Degradation; Frequency; Interference; Oscillators; Signal analysis; Transceivers; Transient analysis; Oscillator; injection-pulling; semi-analytical formulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International

Conference_Location

Boston, MA

ISSN

0149-645X

Print_ISBN

978-1-4244-2803-8

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2009.5166015

Filename

5166015