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In this paper, a proposal to calculate the impedance frequency response of a power distribution network (PDN) is presented. Using the proposed algorithm, power planes have been modeled as an array of regular rectangles or squares constructing blocks like lego type which have been defined in terms of analytical equations given by the pi model. Transition via models has been obtained by using an approach...
Resonances in power distribution network are the major cause of voltage fluctuation and noise problems. In this paper, a new method that suppresses impedance peak is proposed. The proposed method uses a high series resistance (HSR) capacitor in parallel to regular bypass capacitors. By selecting the parameters so that the series resonance frequency of the HSR capacitor equals to the anti-resonance...
Input filters of DC/DC converters used in consumer and industrial electronics are studied and analyzed with an intention of developing a low-noise design. Noise attenuation is targeted by developing lumped-circuit-based noise model for EMI in input filters of Buck, Boost and Buck-Boost DC/DC converters. The models are applied to a basic buck converter and simulated to validate the attenuation techniques.
In-place diagnosis of off-chip power delivery resonance is demonstrated with on-chip waveform capturer and power delivery network (PDN) exciter that were prototyped in a 65 nm CMOS technology. Oscillatory waveforms are captured after the excitation of PDN, from which an LCR lumped equivalent circuit of PDN seen by on-chip circuits is algorithmically derived. The consistency of component values is...
Port state control (PSC) inspection is the most important mechanism to ensure world marine safe. Recently, some SVM-based risk assessment systems have been presented in the world. They estimate the risk of each candidate ship based on its generic factors and history inspection factors to select high-risk one before conducting on-board PSC inspection. However, how to improve the performance of the...
The purpose of this study is to estimate the switching noise reduction effect by using the decoupling capacitor with resistor. By attaching several decoupling capacitors in parallel in the circuit, new anti-resonance peaks appear and it prevents the noise reduction effect. The use of decoupling capacitor with resistor can promise to reduce resonance effects. In this study, the effects of decoupling...
The next generation of wireless communication is a ubiquitous radio system concept, providing wireless access from short-range to wide-area, with one single reconfigurable and adaptive system for all envisaged radio environments. This paper presents the design approach of RCO (reconfigurable concurrent oscillator) that simultaneously generates two or more signals of different frequencies that eliminate...
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