Problem statement: A half-bridge LLC resonant converter with a voltage doubler rectifier has a simple structure and its Zero-Voltage-Switching (ZVS) capability is excellent from zero to full load condition. But conduction loss is more due to high circulating energy thus reducing the system efficiency. Moreover a variable frequency control method makes the control circuits more complicated than ...

In this paper, a modified form of the most efficient resonant LLC series parallel converter configuration (SPRC) is proposed. The proposed system comprises of an additional LC circuit synchronized along with the existing resonant tank of LLC configuration (LLC-LC configuration). With the development of power electronics devices, resonant converters have been proved to be more efficient than con...

In this paper, we propose two electrical models of carpet and gasket Sierpenski patch antenna. In our approach, we replace the antenna structure by its equivalent rectangular patch. Then, we build the electrical model in which we extract the resonant circuit RLC parameters. Return losses of the models are compared to physical patch for frequency band [1GHz, 3GHz]. Simulation results given by ou...

A novel Inductive Contactless Energy Transfer (ICET) system is presented in this paper. The energy is transferred using a rotatable air gap transformer and a power electronic converter. To minimize total losses of the system a series resonant circuit is applied, assuring zero current switching condition for IGBT power transistors. The analytical expression of the transfer dc voltage gain is giv...

This work presents a novel highly efficient and low-stress battery charger with a resonant switch converter— based on resonance and zero-voltage-transition soft-switching theory—that reduces defects associated with high voltage and high current stresses caused by the resonance of traditional resonant circuits. The novel battery charger meets the requirement that all circuit components must oper...

This paper presents an overview of the terahertz (THz) resonant tunneling diode (RTD) technology that will be used as one of the approaches towards wireless data centres as envisioned on the EU H2020 TERAPOD project. We show an example 480 m × 680 m THz source chip at 300 GHz employing a 4 μm × 4 μm RTD device with 0.15 mW output power. We also show a basic laboratory wireless setup with this...

This paper presents the analysis of a water pumping system from photovoltaic cells using a currentfed parallel resonant push-pull inverter, for residential applications in rural areas. The structure of the power circuit is particularly simple and robust. It works in a ZVS commutation. Its main features are: one power processing stage, simple control strategy, low harmonic distortion of the load...

The paper examines the effect of using dissipative edge terminations between power and ground planes on the radiation from a printed circuit board. Basically, this consists of resistive loading of the edges of the power/ground plane structure. These edges constitute the main radiating sources for the dominant resonant mode. This has been found to be effective in reducing the impedance at resona...

Dual interleaved LLC resonant converter with half bridge topology of main circuit characterized by high switching frequency, high power density and high efficiency over entire operational range is initially described. Consequently, the proposal for a computer control is given. Given type of control approach has been developed for the laboratory testing of resonant converters. The control system...

A novel type of millimeter/submillimeter wave sampler based on resonant tunneling diodes (RTDs) was proposed, and its operation was confirmed by circuit simulation. It consists of an RTD pulse generator and an RTD detector. Owing to the fuse-like nonlinear I-V curve, highly sensitive sampling can be obtained. We also found that the effects of nonideality in the I-V curve of the RTD can be corre...