Results 11 to 20 of about 103,193 (347)
Development of a RF Class E amplifier to power a ferroelectric plasma thruster [abstract] [PDF]
, 2008 only availableClass E amplifiers are a special class of electronic amplifiers which are highly efficient at delivering power at high frequencies. Class E amplifiers consist of a signal generator, switch, and two LC resonant circuits.
Kovaleski, Scott D., Scott, Brett
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A Highly Efficient Broadband Class-E Power Amplifier with Nonlinear Shunt Capacitance [PDF]
Journal of the Korean Institute of Electromagnetic Engineering and Science, 2017 A new approach to designing a broadband and highly efficient class-E power amplifier based on nonlinear shunt capacitance analysis is proposed. The nonlinear shunt capacitance method accurately extracts optimum class-E power amplifier parameters ...
Ninh Dang-Duy +4 more
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High-Frequency Power Amplitude Modulators with Class-E Tuned Amplifiers
Journal of Telecommunications and Information Technology, 2023 A high-frequency power amplifier used in a drain amplitude modulator must have linear dependence of output HF voltage Vo versus its supply voltage VDD. This condition essential for obtaining low-level envelope distortions is met by a theoretical class-E
Juliusz Modzelewski +1 more
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Microwave class-E power amplifiers [PDF]
2017 IEEE MTT-S International Microwave Symposium (IMS), 2017 This paper reviews circuit architectures and demonstrated class-E power amplifiers in the UHF and microwave frequency range. Scaling class-E soft-switching operation to high frequencies presents a number of challenges, particularly in the control of parasitic reactances of the device and the circuit.
Popovic, Zoya +1 more
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1 kW MHz Wideband Class E Power Amplifier
IEEE Open Journal of Power Electronics, 2022 Class E power amplifiers are widely used in high-frequency applications due to their simplicity and use of only one ground-referenced switch. However, Class E power amplifiers are usually tuned to operate at a fixed frequency due to their resonant nature.
Jiale Xu, Zikang Tong, Juan Rivas-Davila
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Analytical Design Equations for Class-E Power Amplifiers [PDF]
IEEE Transactions on Circuits and Systems I: Regular Papers, 2007 This paper presents the analytical solution in time domain for the ideal single-ended Class-E Power Amplifier (PA). Based on the analytical solution a coherent non-iterative procedure for choosing the circuit parameters is presented for Class- E PA’s with arbitrary duty-cycle and finite dc-feed inductance (e.g.
Mustafa Acar +2 more
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IEEE Access, 2020 In this paper, a novel outphasing power amplifier (PA) based on class-E amplifiers with shunt capacitances and shunt filters is proposed. The new design provides high drain efficiency for both peak and back-off power levels.
Pavel Afanasyev +3 more
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Load Mismatch Sensitivity of Class-E Power Amplifiers [PDF]
IEEE Transactions on Microwave Theory and Techniques, 2019 Class-E RF power amplifiers (PAs) are very power efficient under nominal operating conditions. Due to incorporating two tuned tanks, the dependence on the load impedance is, however, relatively large, resulting in, e.g., load-dependent output power, power efficiency, peak voltages, and peak (and average) currents which can lead to reliability issues ...
Ali Ghahremani +2 more
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Derivation of the Resonance Mechanism for Wireless Power Transfer Using Class-E Amplifier
Energies, 2021 In this study, we investigated the resonance mechanism of 6.78 MHz resonant wireless power transfer (WPT) systems. The depletion mode of a gallium nitride high-electron-mobility transistor (GaN HEMT) was used to switch the states in a class-E amplifier ...
Ching-Yao Liu +5 more
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High Efficiency Power Amplifier Based on Envelope Elimination and Restoration Technique [PDF]
, 2010 Due to complex envelope and phase modulation employed in modern transmitters it is necessary to use power amplifiers that have high linearity. Linear power amplifiers (classes A, B and AB) are commonly used, but they suffer from low efficiency especially
Alou Cervera, Pedro +9 more
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