Nonlinear Optimization of Wide-Band Harmonic Self-Oscillating Mixers

Author

Fernández, Miguel ; Hoeye, Samuel Ver ; Herran, Luis ; Las-Heras, Fernando

Author_Institution

Dept. of Electr. Eng., Univ. of Oviedo, Oviedo

Volume

18

Issue

5

fYear

2008

fDate

5/1/2008 12:00:00 AM

Firstpage

347

Lastpage

349

Abstract

A new optimization method is presented for the design of wide-band harmonic self-oscillating mixers (HSOMs). High conversion gain is obtained through near-bifurcation operation and optimization of the harmonic content of the self-oscillation. Bifurcation analysis- and control-techniques are used in combination with nonlinear optimization techniques based on the use of an auxiliary generator. An 11.25-1.5 GHz third harmonic self-oscillating mixer (3HSOM) with a 2.5 dB down-conversion gain over a 1.2 GHz bandwidth has been designed. A good agreement between the simulated and experimental results has been found.

Keywords

bifurcation; harmonic oscillators (circuits); mixers (circuits); nonlinear programming; optimisation; 3HSOM; auxiliary generator; bandwidth 1.2 GHz; bifurcation analysis; bifurcation control; gain 2.5 dB; harmonic content; high conversion gain; near-bifurcation operation; nonlinear optimization; third harmonic self-oscillating mixer; wide-band harmonic self-oscillating mixers; Microwave oscillators; optimization methods; oscillation stability; self-oscillating mixers (SOMs);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2008.922128

Filename

4497805