Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Luís C. Nunes"'
A relativistic wave equation for spin 1/2 particles in the Melvin space-time, a space-time where the metric is determined by a magnectic field, is obtained. The effects of very intense magnetic fields in the energy levels, as intense as the ones expe
Externí odkaz:
http://arxiv.org/abs/1508.07307
Publikováno v:
IEEE Electron Device Letters. 44:891-894
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bef8fc09c4873239dcf74ba79469888b
https://doi.org/10.1109/led.2023.3265766
https://doi.org/10.1109/led.2023.3265766
Publikováno v:
IEEE Journal of Microwaves, Vol 4, Iss 3, Pp 389-403 (2024)
This work originates from the realization that, in a transformed impedance thru-reflect-line (TRL) calibration, the sensitivity to random measurement errors is affected by impedance discrepancies between the impedance transformer and the device-under
Externí odkaz:
https://doaj.org/article/62af26f8e90947a8aa2da2ec10e49345
Publikováno v:
IEEE Access, Vol 12, Pp 41631-41642 (2024)
This paper analyzes the performance of the Doherty power amplifier (DPA) with the injection of the second harmonic component generated by the carrier power amplifier (PA) into the peaking PA and vice-versa, using a harmonic injection network (HIN). A
Externí odkaz:
https://doaj.org/article/cd5431efe74b4ddcb2855e60cb8cd75f
Publikováno v:
IEEE Access, Vol 11, Pp 69916-69927 (2023)
This article proposes an automatic methodology for the design of a sequential load-modulated balanced amplifier (SLMBA), which takes corrections for its output combiner’s (a 90° hybrid) frequency response. The method uses a properly selected contr
Externí odkaz:
https://doaj.org/article/1020c15e837749388e0bc5c697151a03
Autor:
Cristiano F. Goncalves, Filipe M. Barradas, Luis C. Nunes, Pedro M. Cabral, Jose Carlos Pedro
Publikováno v:
IEEE Access, Vol 9, Pp 38757-38766 (2021)
This paper presents a compact solution for impedance calculation obtained from low phase resolution stationary wave measurements, for RF power systems operating in load varying scenarios. The implemented system is based on a bi-directional coupler an
Externí odkaz:
https://doaj.org/article/d2574da3489d4051bf7b00ecb0ba7fd6