Title :
Multi-harmonic generator based on the synchronization of a nonlinear bipolar oscillator
Author :
de Cos, E. ; Ramirez, F. ; Suarez, A.
Author_Institution :
Departamento de Ingenieria de Comunicaciones, Cantabria Univ., Santander, Spain
Abstract :
A multi-harmonic generator, based on the synchronization of a bipolar oscillator at the fundamental frequency is presented. The fact that the oscillator generates, by itself, the high harmonic content reduces the requirements of RF input power. The first-harmonic injection enables a relatively large synchronization band. The design is based on a bipolar transistor oscillator, spending a long fraction of its period in the saturated regime. The circuit is simulated through harmonic balance, performing stability and phase-noise analyses. The possibility of frequency conversion between different harmonic components of the oscillator has also been evaluated. A prototype providing harmonics between 0.24 and 2.4 GHz has been manufactured, with very good agreement with experimental results.
Keywords :
UHF oscillators; bipolar transistor circuits; circuit noise; circuit simulation; circuit stability; harmonic oscillators (circuits); nonlinear network synthesis; phase noise; synchronisation; 0.24 to 2.4 GHz; RF input power requirements; bipolar transistor oscillator; circuit simulation; first-harmonic injection; frequency conversion; fundamental frequency; harmonic balance; high harmonic content; large synchronization band; multi-harmonic generator; nonlinear bipolar oscillator; phase-noise analysis; saturated regime; stability analysis; synchronization; Analytical models; Bipolar transistors; Circuit simulation; Circuit stability; Frequency synchronization; Oscillators; Power generation; Power system harmonics; Radio frequency; Stability analysis;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1210595
