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A 1-V 2.4/4.8-GHz 4.59 mW Quadrature Voltage Controlled Oscillator (QVCO) has been designed in 0.18 μm CMOS technology. All-pMOS VCO followed by static frequency divider using source degeneration based D flip-flops is proposed. An accurate small signal analysis model of proposed D flip-flops is provided to estimate the maximum operating frequency of the divider. The advantages of proposed QVCO are...
This paper presents a system architecture for sensor signal digitization utilizing a bandpass sigma-delta modulator. The first version of the proposed system architecture was implemented in 5V 0.7mum CMOS technology. The first version of the proposed system architecture is useful for our capacitive pressure sensor measurement. The paper describes the possibilities of using the proposed enhanced system...
Class D amplifiers are becoming the most feasible solution for embedded audio application. However, distortions due to the non-linear nature of switching stage are the main drawback for this amplifier topology. This paper discusses the design and implementation of high fidelity audio class D using sliding mode control scheme. This design method proves to be a cost effective solution for industrial...
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