The great development potential of polymer dielectric capacitors in harsh environments urgently requires enhancing capacitive performance at high temperatures. However, the exponentially increased conduction loss at high temperature and high field results in a drastic drop in energy density and charge–discharge efficiency. Here, a bilayer
Nature Materials - Electrostatic capacitors can enable ultrafast energy storage and release, but advances in energy density and efficiency need to be made. Here, by doping equimolar Zr, Hf and...
This paper introduces an all-digital CMOS enhanced capacitor-type pulse-varying (shrinking) mechanism designed to improve resolution for low-cost wide-range time-to-digital converters (TDCs). The mechanism utilizes a size-ratioed MOS capacitor coupled with homogeneous gates within the delay line, functioning as a pulse-varying cell to achieve time
Request PDF | Enhanced Capacitor Voltage Balancing and DC Bias Suppression Methods for Three-Level Dual-Active-Bridge Converters | Three-level dual active bridge (DAB) converters based on neutral
In this work, a novel high entropy perovskite oxide (1– x) (Na 0.2 Bi 0.2 Ba 0.2 Sr 0.2 Ca 0.2)TiO 3 - x NaNbO 3 (abbreviated as (1– x)NBBSCT- x NN, x = 0, 0.05, 0.1, 0.15, and 0.2) was designed to improve temperature dielectric stability and energy storage performance by combining relaxor and antiferroelectric characteristics.
A PI control loop is adopted to adjust the duty cycle of switches to realize the DBS. Therefore, the voltage imbalance and dc bias can be eliminated simultaneously by the proposed methods. Experiment results show the improvement of proposed methods in terms of capacitor voltage ripple, dynamic results, and correct DBS.
High-temperature resistance and ultra-fast discharging of materials are among the hot topics in the development of pulsed power systems. It remains a significant challenge for dielectric materials to meet the requirements of storing more
As a new type of energy storage device, carbon-based redox-enhanced supercapacitors (RE
In this work, a novel high entropy perovskite oxide (1– x) (Na 0.2 Bi 0.2 Ba
In summary, we have achieved a 54.3% enhancement and subsequent stable performance of capacitance density in PLZST AFE capacitors by AFE-FE phase transition engineering. This strategy can...
Ultrahigh–power-density multilayer ceramic capacitors (MLCCs) are critical components in electrical and electronic systems. However, the realization of a high energy density combined with a high efficiency is a major challenge for practical applications.
(2019) Wu et al. IEEE Access. In this paper, a design of bandpass filter (BPF) comprised of an asymmetrical differential inductor and an air-bridge enhanced capacitor is developed using the GaAs-based integrated passive device (IPD) fabrication techniques. The Q-factor can be improved by the asym...
In this paper, the ferroelectricity of Hf 0.5 Zr 0.5 O 2 (HZO) memcapacitor is
The proposed BPF design is capable of offering both sound performance and controllable properties and can be improved by the asymmetrical differential inductor and differential structure, providing relative less loss for theBPF design. In this paper, a design of bandpass filter (BPF) comprised of an asymmetrical differential inductor and an air-bridge
In this study, a novel yet general strategy is proposed and demonstrated to enhance the energy storage density (ESD) of dielectric capacitors by introducing a built-in electric field in the dielectric layer, which increases the applied electric field required to
Moreover, the value of the inductor and the capacitor is optimized to achieve a low center frequency with a low-profile design. The proposed microwave biosensor is designed with an intertwined air
A synergetic combination of a chemical redox reaction and a physical capacitor effect in one electrochemical cell is a promising route to realize both high-energy and high-power-density energy storage. In the present work, we studied the electrochemical properties of a nanohybrid system of polyoxometalate (P
2 天之前· Enhanced Durability: Our capacitors are built to withstand harsh environmental conditions, making them ideal for industrial and demanding applications. Competitive Pricing: High-quality does not mean expensive. We
Enhanced Capacitor Voltage Balancing and DC Bias Suppression Methods for Three-Level Dual-Active-Bridge Converters Abstract: Three-level dual active bridge converters based on neutral point clamped legs reduce the voltage stress of power devices compared to two level. However, maintaining the capacitor voltages balanced in a wide operating range is the
As a new type of energy storage device, carbon-based redox-enhanced supercapacitors (RE-SCs) are designed by employing soluble redox electrolytes into the existing devices, exploiting the merits of the diffusion-controlled faradaic process of the redox electrolyte at the surface of carbon electrodes, thus leading to improved energy density
In this paper, the ferroelectricity of Hf 0.5 Zr 0.5 O 2 (HZO) memcapacitor is improved by the co-optimization of process design and electrical measurement with various thicknesses of the Ti insertion layer and conditions of Capacitor–Voltage (C–V) tests.
A lot of trials were made to enhance performance of common gate topology the most important of them is the noise cancellation technique [1] and capacitor cross coupled technique. This paper describes how we can make small modification on a capacitive cross-coupling technique to improve noise figure or flatness of very wide range LNA. Section II
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