Results 211 to 220 of about 1,519,903 (246)

Class-E and inverse class-E switch-mode power amplifiers

Journal of Communications Technology and Electronics, 2012
Circuits of class-E and inverse class-E (Einv) switch-mode power amplifiers (PAs) are systemized on the basis of the principle of duality. New PA circuits (four class-Einv PA circuits and one class-E PA circuit) are proposed. The design relationships for values of reactive LC components of PA shaping circuits are given.
A. V. Vasil’ev, V. B. Kozyrev
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Class E/sup 2/ DC/DC converter with second harmonic resonant class E inverter and Class E rectifier

Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94, 2002
Class E amplifiers have been used as inverters for highly efficient DC/AC energy conversion. ZVS-Class E inverters need an RF choke and ZCS-types have the turn-on switching loss increasing with operating frequency. Both types have nonzero power loss in the on-state resistance of the active switch. The second harmonic resonant Class E inverter has no RF
H. Koizumi, M. Iwadare, S. Mori
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Novel class-E converters

20th Annual IEEE Power Electronics Specialists Conference, 2003
Two zero-voltage switching converters with nonresonant and resonant coupling are presented. These are high-order multiple resonant converters in which the circuit modes associated with the converter operations can have different resonant frequencies. By using proper state variable transformations, the authors derive the steady-state responses of these ...
C.Q. Lee, R. Liu, S. Sooksatra
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Class-E² DC-DC Converter With Basic Class-E Inverter and Class-E ZCS Rectifier for Capacitive Power Transfer

IEEE Transactions on Circuits and Systems II: Express Briefs, 2020
A Class-E2 dc-dc converter with basic Class-E inverter and Class-E ZCS rectifier for capacitive power transfer (CPT) is proposed. The proposed circuit partially absorbs the secondary-side compensation resonance inductance into the equivalent inductance of the Class-E ZCS rectifier.
Hayato Ueda, Hirotaka Koizumi
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HF Class-E based multiplier circuits

2010 Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits, 2010
In this paper a multiply by five class-E based multiplier circuit with a 32 MHz input signal is described and measurement results, performed on a prototype board, are presented and compared with a classical high frequency simulation tool. Here we don't propose a novel project methodology, but illustrate all the simulation steps and measurements results
Colucci P., LEUZZI, GIORGIO, STORNELLI, Vincenzo   +2 more
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Resonant DC/DC converter with class-E inverter and class-E rectifier

IEEE Transactions on Industrial Electronics, 1989
A new type of high-frequency high-efficiency resonant DC/DC converter is proposed, analyzed, and verified experimentally. It is called a class-E converter because it consists of a class-E inverter and a class-E rectifier. The class-E rectifier acts as an impedance inverter and is compatible with the class-E inverter.
M.K. Kazimierczuk, J. Jozwik
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Class-E microwave oscillator

Radioelectronics and Communications Systems, 2006
The class-E oscillator with the directed coupler in the feedback is studied. The similar design allows to retune the oscillator with preservation of high efficiency due to a constancy of a directed coupler coupling coefficient in band of readjustable frequencies and absence of the additional selective resonator in the feedback.
Krizhanovski, Vladimir G., Printsovskii, V. A.   +1 more
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Broadband S-band class E HPA [PDF]

, 2009
A broadband class E High Power Amplifier (HPA) is presented. This HPA is designed to operate at S-band (2.75 to 3.75 GHz). A power added efficiency of 50% is obtained for the two stage amplifier with an output power of 35.5 dBm on a chip area of 5.25 times 2.8 mm2.
Wanum, M. van, Dijk, R. van, Hek, A.P. de, Vliet, F.E. van   +3 more
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Class E inverters and rectifiers

2008 4th European Conference on Circuits and Systems for Communications, 2008
Comparison of class E low dv/dt and low di/dt inverters and rectifiers, which may help in circuit choice. Analytical relationships have been derived for the normalized load resistance and other circuit parameters as functions of the transistor/diode conduction duty factor.
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Class E Power Amplifiers

2001
It is desirable to obtain high RF power amplifier efficiency in many practical applications. At least one, if not all, of the following requirements is important: low power consumption (especially for battery-operated equipment), low temperature rise of the components, high reliability, small size, and light weight. Although the parasitic energy losses
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