Nonlinear modeling of GaAs pHEMTs for millimeter-wave mixer design. (February 2015)

• Record Type: Journal Article
• Authors: Crupi, Giovanni; Raffo, Antonio; Avolio, Gustavo; Bosi, Gianni; Sivverini, Giuseppe; Palomba, Francesco; Caddemi, Alina; Schreurs, Dominique M.M.-P.; Vannini, Giorgio
• Is Part Of: Solid-state electronics. Volume 104(2015)
• Page Start: 25
• Page End: 32
• Publication Date: 2015-02
• Subjects: Design -- Equivalent circuit -- Microwave measurements -- Mixer -- Modeling -- pHEMTs; Semiconductors -- Periodicals; Semiconducteurs -- Périodiques; 621.38152
• DOI: 10.1016/j.sse.2014.11.001
• Languages: English
• ISSNs: 0038-1101

Abstract

Highlights: Extraction of nonlinear equivalent circuit of GaAs pHEMTs for mixer design. Model validation based on high-frequency nonlinear measurements. Design of a packaged Q-band up-converter based on cold-FET mixer. Abstract: The present paper was focused on the extraction of a GaAs pHEMT nonlinear model meant for mixer design. The model is based on an equivalent circuit that is analytically extracted from DC and multi-bias S-parameter measurements. The look-up table approach is used to implement the model in a nonlinear RF circuit simulator. The model accuracy is extensively verified by comparing device measurements and simulations under a wide range of operating conditions. Furthermore, to corroborate the validity of the model, the design of a Q-band up-converter is considered.