نتایج جستجو برای: frequency noise

تعداد نتایج: 648515  

Substrate noise generated by digital circuits on mixed-signal ICs can disturb the sensitiveanalog/RF circuits, such as Low Noise Amplifier (LNA), sharing the same substrate. This paperinvestigates the adverse impact of the substrate noise on a high frequency cascode LNA laid out on alightly doped substrate. By studying the major noise coupling mechanisms, a new and efficientmodeling method is p...

ژورنال: طب کار 2012
عمرانی, محمد, فضلعلیزاده, مریم, قوه, محمد علی, مهرپرور, امیر‌هوشنگ , میرمحمدی, جلیل,

Introduction: Noise Induced Hearing Loss(NIHL) is among the most common occupational diseases which may cause irreversible and permanent hearing loss. Noise is the most frequent preventable occupational exposure. The most importanmt cause of NIHL is exposure to noise more than 85 dB and not to use hearing protection devices. Considering the importance of hearing protection deivices for preventi...

Volatility is the primary measure of risk in modern finance and volatility estimation and inference has attracted substantial attention in the recent financial econometric literature, especially in high-frequency analyses. High-frequency prices carry a significant amount of noise. Therefore, there are two volatility components embedded in the returns constructed using high frequency prices: the...

Journal: :iranian journal of medical physics 0
bahareh shalchian ph.d. student, medical physics dept., faculty of medical sciences, tarbiat modares university, tehran, iran hossein rajabi associate professor, medical physics dept., faculty of medical sciences, tarbiat modares university, tehran, iran hamid soltanian-zadeh professor, control and intelligent processing center of excellence, electrical and computer engineering dept., university of tehran, tehran, iran

introduction: an efficient method of tomographic imaging in nuclear medicine is positron emission tomography (pet). compared to spect, pet has the advantages of higher levels of sensitivity, spatial resolution and more accurate quantification. however, high noise levels in the image limit its diagnostic utility. noise removal in nuclear medicine is traditionally based on fourier decomposition o...

Journal: :IEEE Journal of Selected Topics in Quantum Electronics 2018

Journal: :The Journal of the Acoustical Society of America 1972

Journal: :The Journal of the Acoustical Society of America 2008

Mahmoud Mohammad-Taheri Mohammad Dosarnian-Moghadam, Nahid Pazuki

In this paper, analysis, simulation and design of a distributed amplifier (DA) with 0.13µm CMOS technology in the frequency range of 3-40 GHz is presented. Gain cell is a current reused circuit which is optimum in gain, noise figure, bandwidth and also power dissipation. To improve the noise performance in the frequency range of interest, a T-matching low pass filter LC network which is utilize...

Journal: :Physical review applied 2023

Fluctuations of the qubit frequencies are one major problems to overcome on way scalable quantum computers. Of particular importance fluctuations with a correlation time that exceeds decoherence due decay and dephasing by fast processes. The statistics can be characterized measuring correlators outcomes periodically repeated Ramsey measurements. We describe dynamics during measurements evaluate...

Journal: :Transactions of the Society of Instrument and Control Engineers 1967

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