In this paper, a new high efficiency, high step-up, non-isolated, interleaved DC-DC converter for renewable energy applications is presented. In the suggested topology, two modified step-up KY converters are interleaved to obtain a high conversion ratio without the use of coupled inductors. In comparison with the conventional interleaved DC-DC converters such as boost, buck-boost, SEPIC, ZETA a...

Because of their remarkable roles in electrical cell signaling, voltage-gated cation channels (VGCCs) have been the subject of intense investigations and debate for more than 50 years. Ultimately, the prospective implications of such studies have an impact on our understanding of the molecular properties of VGCCs involved in consciousness, anesthesia, and diseases, to mention a few. The followi...

This paper presents a 2.4 GHz 0.18 μm CMOS single-ended Variable Gain Low noise Amplifier (VGLNA). The circuit is suitable for low voltage, low power operation, uses a current-reuse topology to increase linear gain and save power consumption. The common-source gain stages are stacked for minimum power dissipation while maintaining high gain. The VGLNA exhibits noise figure less than 3 dB and ga...

A high gain, high frequency single stage CMOS op amp is designed and simulated. The authors used gain boosting technique and common mode feedback circuitry on a differential input/ouput 0.5μm CMOS amplifier. Results comprehend a DC gain of 110 dB, a unity-gain frequency superior to 300MHz associated with a phase margin in the range of 60 degrees. Good insensivity to temperature, voltage rail le...

In this paper, a new topology for cascaded multilevel inverter based on quasi-Z-source converter is proposed. In the proposed topology the magnitude of output DC voltage is not limited to the sum of magnitude of DC voltage sources. Moreover, the reliability of the circuit due to capability of short circuit by Z-source network is increased. The quasi-Z- source converter in different modes is ana...

Abstract- A novel low-voltage two-stage operational amplifier employing resistive biasing is presented. This amplifier implements neutralization and correction common mode stability in second stage while employs capacitive dc level shifter and coupling between two stages. The structure reduces the power consumption and increases output voltage swing. The compensation is performed by simple mill...

A new circuit technique for voltage gain enhancement in CMOS op amp design suitable for low voltage and high speed operation is presented in this paper. A negative conductance is used to cancel the positive output conductance of an amplifier thereby reducing the total equivalent output conductance and increasing the voltage gain of the amplifier. The negative conductance is derived from the out...

A low-voltage low-power CMOS operational transconductance amplifier (OTA) with near rail-to-rail output swing is presented in this brief. The proposed circuit is based on the current-mirror OTA topology. In addition, several circuit techniques are adopted to enhance the voltage gain. Simulated from a 0.8-V supply voltage, the proposed OTA achieves a 62-dB dc gain and a gain–bandwidth product of...

A CMOS implementation of a high-gain current mode operational amplifier (opamp) with a single-ended input and a differential output is described. This configuration is the current mode counterpart of the traditional voltage mode opamp. In order to exploit the inherent potential for high speed, low voltage operation normally associated with current mode analog signal processing, the opamp has be...

This paper discusses the design of low-voltage low-power fully-integratable automatic gain controls. Four different AGCs are presented, all consisting of three elementary building blocks: a controlled amplifier, a comparator and a voltage follower. Their design is treated separately. As an example, the final section describes an automatic gain control for hearing instruments. INTRODUCTION Low-v...