this paper describes an advantageous method for using the capacitor banks in the distribution network, optimally. the aim is to determine the count, location and capacitor values in order to minimize the annual cost resulting from energy losses and capacitor bank’s installation cost. besides, in the case of having nonlinear loads in the network, by installing capacitors in appropriate locations...

This chapter presents the design of the track-and-hold and multiplying digital-to-analog converter functional blocks. They are realized by Switched Capacitors (SC) circuits. Typical SC circuit stage consists of sampling capacitors and Metal Oxide Semiconductor (MOS) switches which turn on and off at the clock rate to store the input signal (charge) on the sampling capacitors and subsequently tr...

The paper describes design requirements of a basic stage (called MDAC Multiplying Digital-toAnalog Converter) of a pipelined ADC. There exist error sources such as finite DC gain of opamp, capacitor mismatch, thermal noise, etc., arising when the switched capacitor (SC) technique and CMOS technology are used. These non-idealities are explained and their influences on overall parameters of a pip...

The presented work deals with analysis of non-ideal effect of pipelined analog-to-digital converter (ADC) such as random capacitor mismatch, comparator offset and finite op-amp gain. These factors arise during a conversion in the pipelined ADC when using CMOS technology and switched-capacitors (SC) technique. The pipelined ADC was simulated in MATLAB-Simulink simulation environment. Key-Words: ...

Low-power switched-mode power supply converters are used in applications where size and efficiency are critical. The buck converter size can be reduced by elimination of the bulky filter capacitor. The filtering function of this capacitor can be replaced by an output current ripple compensation circuit. The compensating circuit is applied, based on inductor current measurement and linear amplif...

This paper presents a high step up DC-DC converter to boost low voltage PV system voltage. The switched capacitor converter can obtain a high voltage gain but the line and load regulation is poor and the output voltage is not regulated. The output regulation of the non isolated switching mode DC-DC converter is excellent but the voltage gain cannot be too high.A combination method of the SC con...

A 900-MHz phase-locked loop frequency synthesizer implemented in a 0.6m CMOS technology is developed for the Wireless Integrated Network Sensors applications. It incorporates an automatic switched-capacitor (SC) discrete-tuning loop to extend the overall frequency tuning range to 20%, while the VCO gain ( VCO) resulting from the CMOS varactor continuous-tuning is kept low at only 20 MHz/V in or...

This works presents an integrated 0.18μm CMOS 2-PPM demodulator based on a switched capacitor network for an Energy Detection Impulse-Radio UWB receiver. The circuit has been designed using a top-down methodology that allows to discover the impact of low-level non-idealities on system-level performance. Through the use of a mixed signal simulation environment, performance figures have been obta...

Technology scaling poses challenges in designing analog circuits because of the decrease in intrinsic gain and reduced swing. An alternative to using highgain amplifiers in the implementation of switched capacitor circuits has been proposed [1] that replaces the amplifier with a current source and a comparator. The new comparator-based switch capacitor (CBSC) and zero-crossing-based circuit (ZC...

The increase of transmission frequency reveals more merits than lowor medium-frequency distribution among different kinds of power applications. Highfrequency inverter serves as source side in highfrequency ac (HFAC) power distribution system (PDS). However, it is complicated to obtain a highfrequency inverter with both simple circuit topology and straightforward modulation strategy. A novel sw...