Zobrazeno 1 - 10
of 444
pro vyhledávání: '"J, Tasker"'
Evaluation of admittance domain behavioural model complexity requirements for Power Amplifier design
Publikováno v:
IET Microwaves, Antennas & Propagation, Vol 16, Iss 12, Pp 780-788 (2022)
Abstract In the framework of Power Amplifier (PA) design for communications, frequency domain non‐linear behavioural models have shown their potential as efficient complementary modelling tools when Field Effect Transistor compact models are not av
Externí odkaz:
https://doaj.org/article/23cea1f5f7c247dd89ad00fae947b62e
Autor:
Ainhoa Morales-Fernandez, Monica Fernandez-Barciela, Fernando Isasi-Vicente, Fernando Martin-Rodriguez, Paul J. Tasker
Publikováno v:
IEEE Access, Vol 10, Pp 48673-48680 (2022)
A hybrid dual-band power amplifier (PA) prototype working at two Industrial, Scientific and Medical (ISM) bands, 2.4-2.5 GHz and 5.725-5.875 GHz, was designed for Unmanned Aerial Vehicles (UAVs) communication applications in Spain. Initially, two sin
Externí odkaz:
https://doaj.org/article/21198e8904ca4f8e97aaddc5d8679993
Autor:
Melissa R. McDowell, Twyla J. Tasker
Publikováno v:
Motivation and Momentum in Adult Online Education ISBN: 9781668477120
In post-pandemic higher education, faculty face the challenge of motivating and engaging adult learners in the online learning environment. This chapter provides a theoretical foundation, evidence-based strategies, and tried-and-true examples of ment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a1995b6eb255203a9b9bbfd6289bba4
https://doi.org/10.4018/978-1-6684-7712-0.ch004
https://doi.org/10.4018/978-1-6684-7712-0.ch004
Publikováno v:
2022 Asia-Pacific Microwave Conference (APMC).
Autor:
Ehsan M. Azad, Roberto Quaglia, James J. Bell, Kauser Chadhary, Anh Nghiem, Komo Sulaksono, Paul J. Tasker
Publikováno v:
Proceedings of the 2022 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits
This paper presents an analysis of load-pull measurement data of a GaN on SiC high electron mobility transistor (HEMT) at 3.6 GHz, oriented to aid the design of Doherty power amplifiers with multiple DC supply voltages. Fundamental load-pull data in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ecffd621affcf6d438c331a11178566f
https://orca.cardiff.ac.uk/id/eprint/149461/1/INMMIC2022_ORCA.pdf
https://orca.cardiff.ac.uk/id/eprint/149461/1/INMMIC2022_ORCA.pdf
Publikováno v:
2022 Microwave Mediterranean Symposium (MMS).
This paper explores the use of the Cardiff non-linear behavioral model to characterize the response of multiple-input power amplifiers. In particular, a case study is presented on a 300 W load modulated balanced amplifier operating at 2.1 GHz. The mo
Autor:
Feiyuan Yang, Manikant Singh, Michael J. Uren, Trevor Martin, Hassan Hirshy, Michael A. Casbon, Paul J. Tasker, Martin Kuball
Publikováno v:
Yang, F, Singh, M, Uren, M J, Martin, T, Hirshy, H, Casbon, M A, Tasker, P J & Kuball, M H H 2022, ' Study of Drain Injected Breakdown Mechanisms in AlGaN/GaN-on-SiC HEMTs ', IEEE Transactions on Electron Devices, vol. 69, no. 2, pp. 525-530 . https://doi.org/10.1109/TED.2021.3138841
Breakdown mechanism in 0.25- μm gate length AlGaN/GaN-on-SiC iron doped high electron mobility transistors (HEMTs) with background carbon is investigated through the drain current injection technique. The measurement results reveal that it can be di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3ca233eed2baeccec73cb21cf0fffc6
https://hdl.handle.net/1983/3283c4bc-0388-4eba-b261-c7a9ab00d31d
https://hdl.handle.net/1983/3283c4bc-0388-4eba-b261-c7a9ab00d31d
Publikováno v:
IET Microwaves, Antennas & Propagation. 14:1626-1634
This study reappraises the optimum design parameters for the sequential power amplifier (SPA) when taking relative phase difference into account. By including the phase relationship between the main and peaking amplifiers, a modified efficiency formu
Autor:
Peng Chen, Guofeng Wang, Alexander Alt, Michael A. Casbon, Sattam Alsahali, Paul J. Tasker, Jonathan Lees
Publikováno v:
Electronics Letters. 56:586-589
In this Letter, low-pass finite impulse response filters are proposed to flexibly reduce the envelope bandwidth (BW) requirements for envelope tracking (ET) supply modulators. A second-order power ET (PET) approach is used as a comparative study, and
Autor:
Alexander Alt, Sattam Alsahali, Dragan Gecan, Jonathan Lees, A. Sheikh, Paul J. Tasker, Peng Chen, S. Woodington
Publikováno v:
Electronics Letters. 56:325-328
This Letter presents a novel characterisation system that is able to fully emulate a complete envelope tracking power amplifier (ET-PA) environment, with modulated impedance synthesis and dynamic supply voltage generation while using industry-standar