In this paper, an efficient method for the online identification of the photovoltaic single-diode model parameters is proposed. The combination of a genetic algorithm with explicit equations allows obtaining precise results without the direct measurement of short circuit current and open circuit voltage that is typically used in offline identification methods. Since the proposed method requires...

We propose the use of dynamic circuits for quenching avalanche events in single photon avalanche diode (SPAD) arrays. Two area-efficient, circuit solutions are presented in 0.35μm CMOS technology. These circuits contain no passive elements and consume shoot-through current only at triggering instants. The resulting reduction in power consumption and supply noise is essential to formation of lar...

To solve the problem of harmonic pollution to the power grid that caused by traditional diode rectifier and phase controlled rectifier, the unit power factor PWM rectifier is designed. The topology structure of the rectifier circuit is introduced and the double closed-loop control strategy in three-phase stationary coordinate system is analyzed. For the deficiency of control strategy, the contr...

Lower than ideal fill factors (FF) are caused by parasitic series (Rs) and shunt (Rshunt) resistances, and non-ideal diode properties. The challenge is to quantify the FF losses quickly, simply and without ambiguity. Extracting the parameters by fitting the illuminated or dark measured data with the double diode equation is inaccurate since the externally apparent Rs is not constant; it varies ...

This paper presents two highly integrated receiver circuits fabricated in InP heterojunction bipolar transistor (HBT) technology operating at up to 2.5 and 7.5 Gb/s, respectively. The first IC is a generic digital receiver circuit with CMOS-compatible outputs. It integrates monolithically an automatic-gain-control amplifier, a digital clock and data recovery circuit, and a 1 : 8 demultiplexer, ...

This paper presents a new chaotic memristive circuit, which is derived from the autonomous jerk circuit by replacing first-order generalized diode bridge with simple second-order emulator, consists of six elementary electronic elements. emulator model addresses problem changing configuration diode-bridge memristor when used for symmetry control systems. It also allows to reduce gap between expe...

This paper presents design strategies and measurements of two RF energy harvesting circuits working at UHF frequencies (around 480 MHz). Ambient RF sources are considered so for the circuit designs low power levels have been assumed. The circuits were implemented and the RF/DC conversion efficiency was measured. Index Terms – Matching network, RF energy harvesting, schottky diode, voltage doubler.

This paper focuses on the role of the power MOSFET in achieving high-efficiency converter design. It provides a brief overview of current low-voltage MOSFET trench technologies, along with a discussion about onresistance versus gate charge trade-offs for MOSFETs optimized for use as control or synchronous switches. It covers the importance of the integrated Schottky diode (SyncFETTM MOSFET) in ...

Reliability is one of the key issues for the application of Silicon carbide (SiC) diode in high power conversion systems. For instance, in high voltage direct current (HVDC) converters, the devices can be submitted to high voltage transients which yield to avalanche. This paper presents the experimental evaluation of SiC diodes submitted to avalanche, and shows that the energy dissipation in th...

Electronic control of microwave antennas and circuits is usually based on the use of reverse biased semiconductor junctions. Optical control of such circuits has been by directly illuminating the active (depletion) regions of the semiconductor junctions. In this paper we report indirect optical control of microwave antennas and circuits using a photovoltaic array that generates a light dependen...