Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Diogo R. Barros"'
Autor:
Filipe M. Barradas, Luis C. Nunes, Joao Louro, Diogo R. Barros, Pedro M. Cabral, Jose C. Pedro
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. :1-14
Autor:
Pedro M. Cabral, Joao Louro, Jose C. Pedro, Luis C. Nunes, Catarina Belchior, Diogo R. Barros, Filipe M. Barradas
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 69:2138-2147
This work presents a new artificial neural network (ANN) model formulation for RF high-power transistors which includes the S-parameters of the active device. This improves the small-signal extrapolation capability, and the OFF-state impedance approx
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 67:5127-5138
This article presents a theoretical explanation of the efficiency degradation in wideband radio frequency power amplifiers (RFPAs) under concurrent dual-band operation that is still visible after eliminating all known causes related to the output mat
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 66:5640-5651
This paper addresses the mechanisms of wideband power amplifiers’ efficiency degradation in comparison with their narrowband operation. It starts by identifying some possible causes for this performance degradation, showing that the baseband termin
Publikováno v:
2019 IEEE MTT-S International Microwave Symposium (IMS).
This paper addresses the instantaneous bandwidth degradation of radiofrequency power amplifiers (RFPAs) still visible after eliminating all known causes related with the output matching network (OMN). First, the origin of this degradation, identified
Publikováno v:
2018 IEEE/MTT-S International Microwave Symposium - IMS.
This paper addresses the efficiency degradation observed in wideband power amplifiers. It starts by presenting a detailed explanation that relates this observed performance degradation with the terminations at baseband. Then, a comparison between two