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

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Thu 11 Jun | 10:10 - 11:50
153AB
Frederick Raab
Green Mountain Radio Research
Ramon Beltran
OPHIR RF Inc.
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: TBD
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
Hong Kong Polytechnic Univ., Hong Kong Polytechnic Univ., Hong Kong Polytechnic Univ., Hangzhou Dianzi University, City Univ. of Hong Kong
10:50 - 11:10
Th2B-3 A Frequency-Tunable GaN Switching Power Amplifier with Digital Pulse Encoding
ABSTRACT
Gabriel Ehlert, Jan Wiedemann, Michael Loose, Alexander Deublein, David Riess, Norman Franchi, Georg Fischer
Friedrich-Alexander-Univ. Erlangen-Nürnberg, Friedrich-Alexander-Univ. Erlangen-Nürnberg, Friedrich-Alexander-Univ. Erlangen-Nürnberg, Friedrich-Alexander-Univ. Erlangen-Nürnberg, Friedrich-Alexander-Univ. Erlangen-Nürnberg, Friedrich-Alexander-Univ. Erlangen-Nürnberg, Friedrich-Alexander-Univ. Erlangen-Nürnberg
11:10 - 11:30
Th2B-4 Towards Solid-State High-Power 13.56 MHz Impedance Matching Using Self-Biased SiC-MOSFET-Switched Capacitors
ABSTRACT
Niklas Schwab, Piet Vennemann, Roland Gesche, Christian Carlowitz, Martin Vossiek
Friedrich-Alexander-Univ. Erlangen-Nürnberg, Aurion Anlagentechnik GmbH, Aurion Anlagentechnik GmbH, Friedrich-Alexander-Univ. Erlangen-Nürnberg, Friedrich-Alexander-Univ. Erlangen-Nürnberg
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., Tel-Aviv Univ.