"The designed PA in [2] can find application in flexible hardware for 5G applications, as well as in broadband radar and countermeasure systems. Due to the much simpler design approach, this can be an interesting contribution for the industry. In cooperation with some of the members of the research group CHFE, for the first time the Cardiff Behavioural Model coefficients has been considered as a function of the gate bias voltage. As a result, the intensity of the load-pull measurements decreases up to 80%. This contributes to the energy and computational efficiency of the extraction methodology, which can make it attractive to academia and industry [3]. The substrate based on a magneto-dielectric composite is an interesting contribution as well, since it will allow the development of smaller circuits (Power Amplifier) and larger bandwidths. This is an interesting topic in which new investigations have been planned.
Five additional designs have been realized using novel methodologies and they can become contributions to the state-of-the-art in the short term. In this case, an ultra-wideband power amplifier was designed over the band from 3 to 20 GHz. This amplifier was designed following an innovative methodology that was able to obtain state-of-the-art results, it is much simpler than others and uses a single transistor and a small MMIC area. It makes this design very attractive to academia and industry. A paper has been submitted to one of the most important journals of this area. Additionally, two MMIC Doherty Power Amplifier was designed at 28 GHz, which is considered one of the most trialled 5G bands in the world. Both of them represents novel design methodologies that can be considered potential publications. On the 38 GHz band, a Doherty Power Amplifier has been designed and its simulation results were promising. And finally, in cooperation with members of the group, a new type of amplifier has been designed based on the Load Modulated Power Amplifier.
[1] L. A. Lara, D. L. Mancipe, Y. Pineda, J. J. Moreno, and G. Peña-Rodríguez, ―Design and characterization of a magneto-dielectric composite in high frequency with aligned magnetite powders,‖ in Journal of Physics: Conference Series, Volume 1386, 5th International Meeting for Researchers in Materials and Plasma Technology (5th IMRMPT), Cucuta, 2019.
[2] J. J. Moreno Rubio, R. Quaglia, A. Baddeley, P. J. Tasker and S. C. Cripps, ""Design of a Broadband Power Amplifier Based on Power and Efficiency Contour Estimation,"" in IEEE Microwave and Wireless Components Letters, vol. 30, no. 8.
[3] E. M. Azad, J. J. Bell, R. Quaglia, J. J. Moreno Rubio and P. J. Tasker, ""Gate Bias Incorporation into Cardiff Behavioural Modelling Formulation,"" 2020 IEEE/MTT-S International Microwave Symposium (IMS), Los Angeles, CA, USA, 2020."
