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Nonlinear circuit stability under large-signal pumping: three-port m stability factor versus conversion matrix system identification - Application to a millimeter-wave band MMIC up-converter

Abstract: This article presents and discusses a method to determine stability in nonlinear three-port circuits based on a generalized three-portlstability factor applied to linearized S parameters under large-signal pumping. A comparison with an extension of the conversion matrix-based, system pole-zero identification used to analyze circuit stability isalso presented. The relationship between the two techniques has been verified by means of an ideal two-port nonlinear circuit, and then, it has been applied in the design of a three-port millimeter-wave Monolithic Microwave Integrated Circuit (MMIC) up-converter. The circuit has been fabricated in a commercial GaAs process. On-wafer measurements showed an average conversion loss about 3.5 dB in a RF bandwidth between 40.4 and 41.5 GHz with local oscillator (LO) frequency fixed at 42.5 GHz. A RF/LO isolation better than 25 dB wasmeasured in the whole band, also showing outstanding intermodulation performance. With the proposed approach, the appearance of spurious oscillations was prevented.

 Autoría: Detratti M., Aja B., De La Fuente M., Sancho S., Pascual J.,

 Fuente: International Journal of RF and Microwave Computer-Aided Engineering, 2010, 20(6), 711-720

Editorial: John Wiley & Sons

 Fecha de publicación: 01/11/2010

Nº de páginas: 10

Tipo de publicación: Artículo de Revista

 DOI: 10.1002/mmce.20481

ISSN: 1096-4290,1099-047X

 Proyecto español: TEC2008-06874-C03-01

Url de la publicación: https://doi.org/10.1002/mmce.20481