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Filipe M. Barradas
Filipe M. Barradas
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Year
Linearity and efficiency in 5G transmitters: New techniques for analyzing efficiency, linearity, and linearization in a 5G active antenna transmitter context
C Fager, T Eriksson, F Barradas, K Hausmair, T Cunha, JC Pedro
IEEE Microwave Magazine 20 (5), 35-49, 2019
1552019
Power, linearity, and efficiency prediction for MIMO arrays with antenna coupling
FM Barradas, PM Tome, JM Gomes, TR Cunha, PM Cabral, JC Pedro
IEEE Transactions on Microwave Theory and Techniques 65 (12), 5284-5297, 2017
662017
Compensation of long-term memory effects on GaN HEMT-based power amplifiers
FM Barradas, LC Nunes, TR Cunha, PM Lavrador, PM Cabral, JC Pedro
IEEE Transactions on Microwave Theory and Techniques 65 (9), 3379-3388, 2017
572017
Hybrid analog/digital linearization of GaN HEMT-based power amplifiers
PM Tomé, FM Barradas, TR Cunha, JC Pedro
IEEE Transactions on microwave theory and techniques 67 (1), 288-294, 2018
332018
Theoretical analysis of nonlinear amplification effects in massive MIMO systems
S Teodoro, A Silva, R Dinis, FM Barradas, PM Cabral, A Gameiro
IEEE Access 7, 172277-172289, 2019
322019
Polynomials and LUTs in PA behavioral modeling: A fair theoretical comparison
FM Barradas, TR Cunha, PM Lavrador, JC Pedro
IEEE Transactions on microwave theory and techniques 62 (12), 3274-3285, 2014
292014
Agile single-and dual-band all-digital transmitter based on a precompensated tunable delta–sigma modulator
DC Dinis, RF Cordeiro, FM Barradas, ASR Oliveira, J Vieira
IEEE Transactions on Microwave Theory and Techniques 64 (12), 4720-4730, 2016
222016
Switch-based variable length stubs network for PA load sensitivity reduction
CF Goncalves, FM Barradas, PM Cabral, JC Pedro
IEEE Access 7, 152576-152584, 2019
192019
Dynamic supply voltage control for PA output power correction under variable loading scenarios
CF Gonçalves, FM Barradas, LC Nunes, PM Cabral, JC Pedro
IEEE Transactions on Microwave Theory and Techniques 69 (1), 745-755, 2020
182020
Quasi-load insensitive Doherty PA using supply voltage and input excitation adaptation
CF Gonçalves, FM Barradas, LC Nunes, PM Cabral, JC Pedro
IEEE Transactions on Microwave Theory and Techniques 70 (1), 779-789, 2021
162021
Digital predistortion of RF PAs for MIMO transmitters based on the equivalent load
FM Barradas, TR Cunha, JC Pedro
2017 Integrated Nonlinear Microwave and Millimetre-wave Circuits Workshop …, 2017
162017
The impact of long-term memory effects on the linearizability of GaN HEMT-based power amplifiers
JL Gomes, LC Nunes, FM Barradas, A Cooman, AEF de Jong, RM Heeres, ...
IEEE Transactions on Microwave Theory and Techniques 70 (2), 1377-1390, 2021
152021
New transistor behavioral model formulation suitable for Doherty PA design
J Louro, C Belchior, DR Barros, FM Barradas, LC Nunes, PM Cabral, ...
IEEE Transactions on Microwave Theory and Techniques 69 (4), 2138-2147, 2021
152021
Characterization, modeling, and compensation of the dynamic self-biasing behavior of GaN HEMT-based power amplifiers
PM Tomé, FM Barradas, LC Nunes, JL Gomes, TR Cunha, JC Pedro
IEEE Transactions on Microwave Theory and Techniques 69 (1), 529-540, 2020
142020
Accurate linearization with low-complexity models using cascaded digital predistortion systems
FM Barradas, LC Nunes, JC Pedro, TR Cunha, PM Lavrador, PM Cabral
IEEE microwave magazine 16 (1), 94-103, 2015
132015
A review of memory effects in AlGaN/GaN HEMT based RF PAs
J Pedro, P Tomé, T Cunha, F Barradas, L Nunes, P Cabral, J Gomes
2021 IEEE MTT-S International Wireless Symposium (IWS), 1-3, 2021
122021
Current mode outphasing power amplifier
LC Nunes, FM Barradas, DR Barros, PM Cabral, JC Pedro
2019 IEEE MTT-S International Microwave Symposium (IMS), 1160-1163, 2019
112019
A compact impedance measurement solution for systems operating in load varying scenarios
CF Gonçalves, FM Barradas, LC Nunes, PM Cabral, JC Pedro
IEEE Access 9, 38757-38766, 2021
72021
A multiple-time-scale analog circuit for the compensation of long-term memory effects in GaN HEMT-based power amplifiers
PM Tomé, FM Barradas, TR Cunha, JC Pedro
IEEE Transactions on Microwave Theory and Techniques 68 (9), 3709-3723, 2020
72020
Compensation of the pulse-to-pulse instability of GaN HEMT-based power amplifiers
PM Tome, FM Barradas, TR Cunha, JC Pedro
2019 IEEE MTT-S International Microwave Symposium (IMS), 408-411, 2019
62019
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