Introduction: With delta-sigma (D-S) modulators (DSMs) heading towards low-power high-speed applications with low oversampling ratio (OSR), the employing of higher-order noise shaping is necessary to achieve the desired signal-to-noise-and-distortion ratio (SNDR). The single-loop high-order DSM can provide the required SNDR with relaxed analogue circuit requirements, but is prone to loop instab...

This paper aims to measure and analyze of the leakage current of 20 kV polymer and porcelain metal oxide surge arresters under humid ambient conditions by applying different voltages to the arresters terminal. The characteristics of the leakage currents at that stage have been investigated when changes in the ambient humidity were introduced in an artificial fog chamber. It is assumed that magn...

Here we present a Continuous Wave radar receiver with a digital noise cancellation circuit. The leakage signal is cancelled by the mixer/PLL followed by an analog low pass filter also works as anti aliasing filter for the Ato-D. The digital signal processing after A-to-D cancels the analog thermal noise from front end which is mathematically AWGN in nature. We assume synchronous CDMA transmissi...

Problem: While the aggressive scaling of CMOS technology to ever smaller dimensions has enabled higher performance and integration levels, it has given rise to a plethora of new problems in the design of integrated circuits [1-4]. Reduced threshold voltages and gate oxide thicknesses have caused an alarming increase in subthreshold source-drain leakage and gate leakage power dissipation in both...

Within neural monitoring systems, the front-end amplifier forms the critical element for signal detection and preprocessing, which determines not only the fidelity of the biosignal, but also impacts power consumption and detector size. In this paper, a novel combined feedback loop-controlled approach is proposed to compensate for input leakage currents generated by low noise amplifiers when in ...

This paper describes sub-harmonic mixer designed in 0.18 μm CMOS process and intended for use in low-power IEEE 802.15.4-compliant 2.4 GHz transceiver. Device addresses the following issues of the direct conversion architecture: flicker-noise, LO leakage and oscillator pulling.

In recent years power saving is one of the important thing. Domino logic circuit is power efficient cicuit,so it is widely used in variety of applications in digital design. But it has a limitation of low noise immunity and more leakage current. This problem can be solved by using keeper transistor to compensate leakage current of pull down network. The conventional keeper domino circuit reduce...

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Short-range scatterometer systems are used to obtain radar backscatter signatures for understanding the interaction between electromagnetic energy and geophysical media in a number of remote sensing applications. Unlike long-range and intermediate-range radar systems, the sensitivity of short-range radars is not limited by thermal noise, but rather by reflections and leakage signals from the an...

Pipelines function as blood vessels serving to bring life-necessities, so their safe usage is one of the foremost concerns. In our previous work, a fiber Bragg grating (FBG) hoop strain sensor with enhanced sensitivity was developed to measure the pressure drop induced by pipeline leakage. Some hoop strain information during the leakage transient process can be extracted from the amount of FBG ...