In this work, the S-functions behavioral modeling method has been used for the first time under two-tone large signal excitation. For this purpose, a modified S-functions model representation is proposed. The technique is applied to harmonic balance simulations of a doubly balanced diode mixer. The new model is almost five time faster than the circuit model, and still accurately predicts the inband frequency components at IF and RF ports of the mixer. Moreover, the obtained S-functions model coefficients directly allow to calculate a predistorsion signal for mixer linearization purposes. As a result, up to 35 dB suppression of the 3rd order intermodulation product is achieved for the mixer operating at 1 dB compression point.
S-functions mixer modeling for linearization purposes / G. Gibiino;A. Santarelli;S. Farsi;M. Myslinski;G. Avolio;D. Schreurs. - (2011), pp. 490-493. (Intervento presentato al convegno 14th European Microwave Week 2011: "Wave to the Future", EuMW 2011 - 6th European Microwave Integrated Circuit Conference, EuMIC 2011 tenutosi a Manchester, United Kingdom nel 10-11 Oct 2011).
S-functions mixer modeling for linearization purposes
GIBIINO, GIAN PIERO;SANTARELLI, ALBERTO;
2011
Abstract
In this work, the S-functions behavioral modeling method has been used for the first time under two-tone large signal excitation. For this purpose, a modified S-functions model representation is proposed. The technique is applied to harmonic balance simulations of a doubly balanced diode mixer. The new model is almost five time faster than the circuit model, and still accurately predicts the inband frequency components at IF and RF ports of the mixer. Moreover, the obtained S-functions model coefficients directly allow to calculate a predistorsion signal for mixer linearization purposes. As a result, up to 35 dB suppression of the 3rd order intermodulation product is achieved for the mixer operating at 1 dB compression point.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.