X-band wideband 5W GaN MMIC power amplifier with large-signal gain equalization

Camarchia, Vittorio, Fang, Jie, Ghione, Giovanni, Rubio, Jorge Moreno, Pirola, Marco and Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X 2012. X-band wideband 5W GaN MMIC power amplifier with large-signal gain equalization. Presented at: 2012 Workshop on Integrated Nonlinear Microwave and Millimetre-wave Circuits, Dublin, Ireland, 3-4 September 2012. 2012 Workshop on Integrated Nonlinear Microwave and Millimetre-wave Circuits. IEEE, pp. 1-3. 10.1109/INMMIC.2012.6331935

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Abstract

We present a wideband GaN MMIC power amplifier, designed to be the unit cell of a balanced module. A wideband output matching network, based on a two-section transformer, is adopted to compensate for reactive effects over the entire bandwidth. A reactive network is inserted at the input for gain equalization at compression; the resulting input reflectance will be controlled by the balanced configuration. According to simulations the MMIC shows, in the 7-14GHz band, power gain ranging from 6.8 to 8 dB, output power always >; 5W, drain efficiency between 43% and 59% at power saturation. Preliminary measurements on the first run have comparable gain and slightly lower output power on a narrower bandwdith; the output efficiency goal is, however, achieved only on the lower part of the bandwidth. A second-run redesign is in progress.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Schools:	Engineering
Publisher:	IEEE
ISBN:	9781467329507
Last Modified:	04 Nov 2022 12:15
URI:	https://orca.cardiff.ac.uk/id/eprint/122385

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