Th2B: High Efficiency and Load-Tolerant Power Amplifiers for HF-VHF-UHF

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Thu 11 Jun | 10:10 - 11:50
Room 153AB
Frederick Raab
Green Mountain Radio Research
Ramon Beltran
Ophir RF
This session presents the latest developments in power amplifiers for HF, VHF, and UHF bands. The keynote paper introduces the Aurora transceiver, which integrates digital signal processing with high-efficiency amplification. This is followed by a Class-EF amplifier designed for VHF operation. The session continues with a paper utilizing digital pulse-width modulation to generate RF signals over a wide bandwidth. Finally, two papers address techniques for enhancing power amplifier robustness against variable load impedances.
10:10 - 10:30
Th2B-1 KEYNOTE: Aurora: Advancing the Radio Art
ABSTRACT
Tony Brock-Fisher
Consultant
10:30 - 10:50
Th2B-2 High-Efficiency VHF Class-Φ₂ Power Amplifier with a GaN Sinusoidal Resonant Gate Driver
ABSTRACT
Yixuan Huang, Jingyun Bi, Xinyu Zhou, Shichang Chen, Wing Shing Chan
PolyU, Hangzhou Dianzi University, CityUHK
10:50 - 11:10
Th2B-3 A Frequency-Tunable GaN Switching Power Amplifier with Digital Pulse Encoding
ABSTRACT
Gabriel Ehlert, Jan Philipp Wiedemann, Michael Loose, Alexander Deublein, David Riess, Norman Franchi, Georg Fischer
FAU Erlangen-Nürnberg
11:10 - 11:30
Th2B-4 Towards Solid-State High-Power 13.56MHz Impedance Matching Using Self-Biased SiC-MOSFET-Switched Capacitors
ABSTRACT
Niklas Schwab, Piet Vennemann, Roland Gesche, Christian Carlowitz, Martin Vossiek
FAU Erlangen-Nürnberg, Aurion Anlagentechnik
11:30 - 11:50
Th2B-5 A 20–500 MHz, 250W Adaptive Bias Class-G Balanced GaN Power Amplifier with Inherent Resilience to Antenna VSWR
ABSTRACT
Assaf Azoulay, Nimrod Ginzberg
Tel-Aviv Univ.