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Filipe M. Barradas
Filipe M. Barradas
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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
822019
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
432017
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
392017
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
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
282019
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
242018
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
202016
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
152017
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
122015
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
102019
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
72020
Compensation of the pulse-to-pulse instability of GaN HEMT-based power amplifiers
PM Tomé, FM Barradas, TR Cunha, JC Pedro
2019 IEEE MTT-S International Microwave Symposium (IMS), 408-411, 2019
62019
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
52020
Higher locality non-linear basis functions of Volterra series based models to improve extraction conditioning
FM Barradas, TR Cunha, PM Lavrador, JC Pedro
2014 IEEE MTT-S International Microwave Symposium (IMS2014), 1-4, 2014
52014
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
42019
A transient two-tone RF method for the characterization of electron trapping capture and emission dynamics in GaN HEMTs
PM Tomé, FM Barradas, LC Nunes, JL Gomes, TR Cunha, JC Pedro
2020 IEEE/MTT-S International Microwave Symposium (IMS), 428-431, 2020
32020
Magnetless RF isolator design using grounded transistors
FM Barradas, TR Cunha, PM Cabral, JC Pedro
2018 IEEE/MTT-S International Microwave Symposium-IMS, 439-442, 2018
32018
Using spline basis functions in Volterra series based models
FM Barradas, TR Cunha, PM Lavrador, JC Pedro
2014 International Workshop on Integrated Nonlinear Microwave and Millimetre …, 2014
32014
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
22021
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
22021
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